Removed PHPUnit <6 compat wrapper

The TestCase wrapper caused PhpStorm to show warnings about
multiple implementations

Fixes #188

Improved some type hints in DocBlocks

.editorconfig

@@ -13,3 +13,6 @@ insert_final_newline = true
 
 [composer.json]
 indent_size = 4
+
+[.travis.yml]
+indent_size = 2

.travis.yml

@@ -1,18 +1,25 @@
+dist: trusty
 language: php
+dist: trusty
 
 php:
-  - 7.2
+  - '7.4'
-  - 7.1
+  - '7.3'
-  - 7.0
+  - '7.2'
-  - 5.6
+  - '7.1'
-  - 5.5
+  - '7.0'
+
+before_install:
+  - composer update
 
 script:
-  - phpunit --version
+  - composer validate
-  - phpunit --configuration tests/phpunit.xml
+  - vendor/bin/phpunit --version
+  - vendor/bin/phpunit --configuration tests/phpunit.xml
 
 notifications:
   email:
-    - will.knauss@gmail.com
+    recipients:
-  on_success: never
+      - will.knauss@gmail.com
-  on_failure: always
+    on_success: never
+    on_failure: always

ChangeLog.txt

@@ -1,16 +1,92 @@
-ParseCSV dev-master
+ParseCSV 1.2.1
 -----------------------------------
-Date: unreleased
+Date: 25-Apr-2020
 
-- New function getTotalDataRowCount() - useful if
+Breaking changes: none
-  $limit is set - see pull request #122.
+New features: none
+Bug fixes: none
 
-- Dropped support for PHP 5.4
+Code quality:
+- Switched from PHPUnit 4 to 6 to get rid of
+  wrappers. This will reduce friction for PhpStorm users,
+  because it gets rid of the "Multiple definitions" error
+  See issue #188. Thanks to @SharkMachine for the hint.
+-----------------------------------
 
+
+ParseCSV 1.2.0
+-----------------------------------
+Date: 07-Jan-2020
+
+Breaking changes: none
+
+New features:
+- Compatible with PHP 7.4. Thanks to @andreybolonin
+  @morrislaptop @martijnengler and @fjf2002.
+- unparse() now also understands $use_mb_convert_encoding.
+- Verbal condition operators are now allowed to contain
+  upper case letters, for example:
+  $csv->conditions = 'rating IS GREATER THAN 4';
+
+Bug fixes:
+-  All filter condition operators containing "is" or "equals"
+   were broken.
+
+Code quality:
+- Improved test coverage.
+-----------------------------------
+
+
+ParseCSV 1.1.1
+-----------------------------------
+Date: 2-Feb-2019
+
+Breaking changes: none
+
+New features: none
+
+Bug fixes:
+- Function load_data: check length of input, prevents E_NOTICE
+  if too long.
+- Fixed bugs in unparse().
+
+Code quality:
+- Improved test coverage.
+-----------------------------------
+
+
+ParseCSV 1.1.0
+-----------------------------------
+Date: 9-Aug-2018
+
+Breaking changes:
+- Ignore entirely empty lines at the end of files
+  See https://github.com/parsecsv/parsecsv-for-php/pull/142
+- Dropped support for PHP 5.4. Now, you need at leas PHP 5.5.
+- Fixed parse()'s return value: return true only if $data is useful.
+
+New features:
 - Added support for Laravel-style collections via the
   new getCollection() function - see
   https://github.com/parsecsv/parsecsv-for-php/pull/134
+- New function getTotalDataRowCount() - useful if
+  $limit is set - see pull request #122.
+- Added requires to keep Composer-free environments working.
 
+Bug fixes:
+- Better support for streams.
+  See https://github.com/parsecsv/parsecsv-for-php/pull/147
+- Fixed output() with custom header.
+  See https://github.com/parsecsv/parsecsv-for-php/issues/132
+- Fixed bug on _validate_fields_for_unparse() if titles property
+  is used instead of fields parameter for changing the titles for
+  unparsing.
+- Fixed bug in unparse() that caused incorrect column order
+  (Issue #41).
+
+
+Code quality:
+- Improved test coverage.
 -----------------------------------
 
 

README.md

@@ -1,4 +1,5 @@
 # ParseCsv
+[![Financial Contributors on Open Collective](https://opencollective.com/parsecsv/all/badge.svg?label=financial+contributors)](https://opencollective.com/parsecsv)
 
 ParseCsv is an easy-to-use PHP class that reads and writes CSV data properly. It
 fully conforms to the specifications outlined on the on the
@@ -103,7 +104,7 @@ $count = $csv->getTotalDataRowCount();
 print_r($count);
 ```
 
-**Get most common data type for each column (Requires PHP >= 5.5)**
+**Get most common data type for each column**
 
 ```php
 $csv = new ParseCsv\Csv('data.csv');
@@ -113,6 +114,7 @@ print_r($csv->data_types);
 
 **Modify data in a CSV file**
 
+Change data values:
 ```php
 $csv = new ParseCsv\Csv();
 $csv->sort_by = 'id';
@@ -122,6 +124,14 @@ $csv->data[4] = array('firstname' => 'John', 'lastname' => 'Doe', 'email' => 'jo
 $csv->save();
 ```
 
+Enclose each data value by quotes:
+```php
+$csv = new ParseCsv\Csv();
+$csv->parse('data.csv');
+$csv->enclose_all = true;
+$csv->save();
+```
+
 **Replace field names or set ones if missing**
 
 ```php
@@ -136,7 +146,7 @@ _Only recommended when you know the exact structure of the file._
 
 ```php
 $csv = new ParseCsv\Csv();
-$csv->save('data.csv', array(array('1986', 'Home', 'Nowhere', '')), true);
+$csv->save('data.csv', array(array('1986', 'Home', 'Nowhere', '')), /* append */ true);
 ```
 
 **Convert 2D array to CSV data and send headers to browser to treat output as
@@ -147,7 +157,7 @@ $csv = new ParseCsv\Csv();
 $csv->output('movies.csv', $array, array('field 1', 'field 2'), ',');
 ```
 
-For more complex examples, see the ``tests`` and `examples` directories. 
+For more complex examples, see the ``tests`` and `examples` directories.
 
 ## Credits
 
@@ -160,11 +170,37 @@ For more complex examples, see the ``tests`` and `examples` directories.
 
 ## Contributors
 
+### Code Contributors
+
+This project exists thanks to all the people who contribute.
+
 Please find a complete list on the project's [contributors][] page.
 
 [contributors]: https://github.com/parsecsv/parsecsv-for-php/graphs/contributors
+<a href="https://github.com/parsecsv/parsecsv-for-php/graphs/contributors"><img src="https://opencollective.com/parsecsv/contributors.svg?width=890&button=false" /></a>
 
+### Financial Contributors
 
+Become a financial contributor and help us sustain our community. [[Contribute](https://opencollective.com/parsecsv/contribute)]
+
+#### Individuals
+
+<a href="https://opencollective.com/parsecsv"><img src="https://opencollective.com/parsecsv/individuals.svg?width=890"></a>
+
+#### Organizations
+
+Support this project with your organization. Your logo will show up here with a link to your website. [[Contribute](https://opencollective.com/parsecsv/contribute)]
+
+<a href="https://opencollective.com/parsecsv/organization/0/website"><img src="https://opencollective.com/parsecsv/organization/0/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/1/website"><img src="https://opencollective.com/parsecsv/organization/1/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/2/website"><img src="https://opencollective.com/parsecsv/organization/2/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/3/website"><img src="https://opencollective.com/parsecsv/organization/3/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/4/website"><img src="https://opencollective.com/parsecsv/organization/4/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/5/website"><img src="https://opencollective.com/parsecsv/organization/5/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/6/website"><img src="https://opencollective.com/parsecsv/organization/6/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/7/website"><img src="https://opencollective.com/parsecsv/organization/7/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/8/website"><img src="https://opencollective.com/parsecsv/organization/8/avatar.svg"></a>
+<a href="https://opencollective.com/parsecsv/organization/9/website"><img src="https://opencollective.com/parsecsv/organization/9/avatar.svg"></a>
 
 ## License
 

composer.json

@@ -20,14 +20,13 @@
             "homepage": "https://github.com/Fonata"
         }
     ],
-    "autoload":{
+    "autoload": {
-        "psr-4":{
+        "psr-4": {
-            "ParseCsv\\": "src",
+            "ParseCsv\\": "src"
-            "ParseCsv\\extensions\\": "src\\extensions"
         }
     },
-    "autoload-dev":{
+    "autoload-dev": {
-        "psr-4":{
+        "psr-4": {
             "ParseCsv\\tests\\": "tests"
         }
     },
@@ -35,11 +34,17 @@
         "php": ">=5.5"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.1.*"
+        "phpunit/phpunit": "^6",
+        "squizlabs/php_codesniffer": "^3.5"
     },
     "suggest": {
         "illuminate/support": "Fluent array interface for map functions"
     },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0.x-dev"
+        }
+    },
     "support": {
         "issues": "https://github.com/parsecsv/parsecsv-for-php/issues",
         "source": "https://github.com/parsecsv/parsecsv-for-php"

examples/basic.php

@@ -3,6 +3,7 @@
 
 # include parseCSV class.
 require __DIR__ . '/../vendor/autoload.php';
+
 use ParseCsv\Csv;
 
 
@@ -40,7 +41,7 @@ $csv->auto('_books.csv');
         background-color: #FFF;
     }
 </style>
-<table border="0" cellspacing="1" cellpadding="3">
+<table>
     <tr>
         <?php foreach ($csv->titles as $value): ?>
             <th><?php echo $value; ?></th>

examples/conditions.php

@@ -4,6 +4,7 @@
 
 # include parseCSV class.
 require __DIR__ . '/../vendor/autoload.php';
+
 use ParseCsv\Csv;
 
 
@@ -16,6 +17,7 @@ $csv = new Csv();
 $csv->conditions = 'author does not contain dan brown';
 // $csv->conditions = 'rating < 4 OR author is John Twelve Hawks';
 // $csv->conditions = 'rating > 4 AND author is Dan Brown';
+// $csv->conditions = 'rating is greater than 4';
 
 
 # Parse '_books.csv' using automatic delimiter detection.
@@ -41,7 +43,7 @@ $csv->auto('_books.csv');
         background-color: #FFF;
     }
 </style>
-<table border="0" cellspacing="1" cellpadding="3">
+<table>
     <tr>
         <?php foreach ($csv->titles as $value): ?>
             <th><?php echo $value; ?></th>

examples/download.php

@@ -3,6 +3,7 @@
 
 # include parseCSV class.
 require __DIR__ . '/../vendor/autoload.php';
+
 use ParseCsv\Csv;
 
 
@@ -31,5 +32,3 @@ $csv->output('books.csv');
 # data to download the output as a CSV file. if it's not set
 # or is set to null, output will only return the generated CSV
 # output data, and will not output to the browser itself.
-
-?>

examples/limit.php

@@ -4,6 +4,7 @@
 
 # include parseCSV class.
 require __DIR__ . '/../vendor/autoload.php';
+
 use ParseCsv\Csv;
 
 
@@ -54,7 +55,7 @@ $csv->auto('_books.csv');
         background-color: #FFF;
     }
 </style>
-<table border="0" cellspacing="1" cellpadding="3">
+<table>
     <tr>
         <?php foreach ($csv->titles as $value): ?>
             <th><?php echo $value; ?></th>

examples/save_to_file_without_header_row.php

@@ -0,0 +1,27 @@
+<?php
+
+
+# include parseCSV class.
+require __DIR__ . '/../vendor/autoload.php';
+
+use ParseCsv\Csv;
+
+
+# Create new parseCSV object.
+$csv = new Csv();
+
+# When saving, don't write the header row:
+$csv->heading = false;
+
+# Specify which columns to write, and in which order.
+# We won't output the 'Awesome' column this time.
+$csv->titles = ['Age', 'Name'];
+
+# Data to write:
+$csv->data = [
+    0 => ['Name' => 'Anne', 'Age' => 45, 'Awesome' => true],
+    1 => ['Name' => 'John', 'Age' => 44, 'Awesome' => false],
+];
+
+# Then we save the file to the file system:
+$csv->save('people.csv');

ruleset.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0"?>
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="ParseCSV" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
+</ruleset>

src/Csv.php

@@ -151,7 +151,7 @@ class Csv {
     public $auto_depth = 15;
 
     /**
-     * Auto Non Charts
+     * Auto Non Chars
      * Characters that should be ignored when attempting to auto-detect delimiter
      *
      * @var string
@@ -169,7 +169,7 @@ class Csv {
 
     /**
      * Convert Encoding
-     * Should we convert the csv encoding?
+     * Should we convert the CSV character encoding?
      *
      * @var bool
      */
@@ -278,8 +278,20 @@ class Csv {
     public $error_info = array();
 
     /**
-     * Titles
+     * $titles has 4 distinct tasks:
-     * CSV titles if they exists
+     * 1. After reading in CSV data, $titles will contain the column headers
+     *    present in the data.
+     *
+     * 2. It defines which fields from the $data array to write e.g. when
+     *    calling unparse(), and in which order. This lets you skip columns you
+     *    don't want in your output, but are present in $data.
+     *    See examples/save_to_file_without_header_row.php.
+     *
+     * 3. It lets you rename columns. See StreamTest::testWriteStream for an
+     *    example.
+     *
+     * 4. When writing data and $header is true, then $titles is also used for
+     *    the first row.
      *
      * @var array
      */
@@ -287,7 +299,7 @@ class Csv {
 
     /**
      * Data
-     * Two dimensional array of CSV data
+     * Two-dimensional array of CSV data
      *
      * @var array
      */
@@ -299,16 +311,16 @@ class Csv {
      * Constructor
      * Class constructor
      *
-     * @param  string|null  $input          The CSV string or a direct filepath
+     * @param string|null $input           The CSV string or a direct file path
-     * @param  integer|null $offset         Number of rows to ignore from the
+     * @param int|null    $offset          Number of rows to ignore from the
-     *                                      beginning of  the data
+     *                                     beginning of  the data
-     * @param  integer|null $limit          Limits the number of returned rows
+     * @param int|null    $limit           Limits the number of returned rows
-     *                                      to specified amount
+     *                                     to specified amount
-     * @param  string|null  $conditions     Basic SQL-like conditions for row
+     * @param string|null $conditions      Basic SQL-like conditions for row
-     *                                      matching
+     *                                     matching
-     * @param  null|true    $keep_file_data Keep raw file data in memory after
+     * @param null|true   $keep_file_data  Keep raw file data in memory after
-     *                                      successful parsing
+     *                                     successful parsing
-     *                                      (useful for debugging)
+     *                                     (useful for debugging)
      */
     public function __construct($input = null, $offset = null, $limit = null, $conditions = null, $keep_file_data = null) {
         $this->init($offset, $limit, $conditions, $keep_file_data);
@@ -319,13 +331,13 @@ class Csv {
     }
 
     /**
-     * @param  integer|null $offset         Number of rows to ignore from the
+     * @param int|null    $offset           Number of rows to ignore from the
      *                                      beginning of  the data
-     * @param  integer|null $limit          Limits the number of returned rows
+     * @param int|null    $limit            Limits the number of returned rows
      *                                      to specified amount
-     * @param  string|null  $conditions     Basic SQL-like conditions for row
+     * @param string|null $conditions       Basic SQL-like conditions for row
      *                                      matching
-     * @param  null|true    $keep_file_data Keep raw file data in memory after
+     * @param null|true   $keep_file_data   Keep raw file data in memory after
      *                                      successful parsing
      *                                      (useful for debugging)
      */
@@ -355,12 +367,12 @@ class Csv {
      * Parse
      * Parse a CSV file or string
      *
-     * @param  string|null $input      The CSV string or a direct filepath
+     * @param string|null $input       The CSV string or a direct file path
-     * @param  integer     $offset     Number of rows to ignore from the
+     * @param int|null    $offset      Number of rows to ignore from the
      *                                 beginning of  the data
-     * @param  integer     $limit      Limits the number of returned rows to
+     * @param int|null    $limit       Limits the number of returned rows to
      *                                 specified amount
-     * @param  string      $conditions Basic SQL-like conditions for row
+     * @param string|null $conditions  Basic SQL-like conditions for row
      *                                 matching
      *
      * @return bool True on success
@@ -378,11 +390,11 @@ class Csv {
 
         if (strlen($input) <= PHP_MAXPATHLEN && is_readable($input)) {
             $this->file = $input;
-            $this->data = $this->parse_file();
+            $this->data = $this->_parse_file();
         } else {
             $this->file = null;
             $this->file_data = &$input;
-            $this->data = $this->parse_string();
+            $this->data = $this->_parse_string();
         }
 
         return $this->data !== false;
@@ -392,14 +404,15 @@ class Csv {
      * Save
      * Save changes, or write a new file and/or data
      *
-     * @param  string $file   File location to save to
+     * @param string $file    File location to save to
-     * @param  array  $data   2D array of data
+     * @param array  $data    2D array of data
-     * @param  bool   $append Append current data to end of target CSV, if file
+     * @param bool   $append  Append current data to end of target CSV, if file
      *                        exists
-     * @param  array  $fields Field names. Sets the header. If it is not set
+     * @param array  $fields  Field names. Sets the header. If it is not set
      *                        $this->titles would be used instead.
      *
      * @return bool
+     *   True on success
      */
     public function save($file = '', $data = array(), $append = FileProcessingModeEnum::MODE_FILE_OVERWRITE, $fields = array()) {
         if (empty($file)) {
@@ -416,16 +429,16 @@ class Csv {
      * Output
      * Generate a CSV based string for output.
      *
-     * @param  string|null $filename   If a filename is specified here or in the
+     * @param string|null $filename    If a filename is specified here or in the
      *                                 object, headers and data will be output
      *                                 directly to browser as a downloadable
      *                                 file. This file doesn't have to exist on
      *                                 the server; the parameter only affects
      *                                 how the download is called to the
      *                                 browser.
-     * @param  array[]     $data       2D array with data
+     * @param array[]     $data        2D array with data
-     * @param  array       $fields     Field names
+     * @param array       $fields      Field names
-     * @param  string|null $delimiter  character used to separate data
+     * @param string|null $delimiter   character used to separate data
      *
      * @return string  The resulting CSV string
      */
@@ -461,8 +474,10 @@ class Csv {
      * Encoding
      * Convert character encoding
      *
-     * @param  string $input  Input character encoding, uses default if left blank
+     * @param string|null $input  Input character encoding, uses default if left blank
-     * @param  string $output Output character encoding, uses default if left blank
+     * @param string|null $output Output character encoding, uses default if left blank
+     *
+     * @return void
      */
     public function encoding($input = null, $output = null) {
         $this->convert_encoding = true;
@@ -480,13 +495,13 @@ class Csv {
      * Auto-Detect Delimiter: Find delimiter by analyzing a specific number of
      * rows to determine most probable delimiter character
      *
-     * @param  string|null $file         Local CSV file
+     * @param string|null $file         Local CSV file
-     * @param  bool        $parse        True/false parse file directly
+     * @param bool        $parse        True/false parse file directly
-     * @param  int         $search_depth Number of rows to analyze
+     * @param int|null    $search_depth Number of rows to analyze
-     * @param  string      $preferred    Preferred delimiter characters
+     * @param string|null $preferred    Preferred delimiter characters
-     * @param  string|null $enclosure    Enclosure character, default is double quote (").
+     * @param string|null $enclosure    Enclosure character, default is double quote (").
      *
-     * @return string The detected field delimiter
+     * @return string|false The detected field delimiter
      */
     public function auto($file = null, $parse = true, $search_depth = null, $preferred = null, $enclosure = null) {
         if (is_null($file)) {
@@ -523,7 +538,7 @@ class Csv {
 
         // parse data
         if ($parse) {
-            $this->data = $this->parse_string();
+            $this->data = $this->_parse_string();
         }
 
         return $this->delimiter;
@@ -559,12 +574,10 @@ class Csv {
 
         $headingRow = $this->heading ? 1 : 0;
 
-        $count = substr_count($data, "\r")
+        return substr_count($data, "\r")
             + substr_count($data, "\n")
             - substr_count($data, "\r\n")
             - $headingRow;
-
-        return $count;
     }
 
     // ==============================================
@@ -573,13 +586,13 @@ class Csv {
 
     /**
      * Parse File
-     * Read file to string and call parse_string()
+     * Read file to string and call _parse_string()
      *
-     * @param  string|null $file Local CSV file
+     * @param string|null $file Local CSV file
      *
      * @return array|bool
      */
-    protected function parse_file($file = null) {
+    protected function _parse_file($file = null) {
         if (is_null($file)) {
             $file = $this->file;
         }
@@ -588,21 +601,23 @@ class Csv {
             $this->load_data($file);
         }
 
-        return !empty($this->file_data) ? $this->parse_string() : false;
+        return !empty($this->file_data) ? $this->_parse_string() : false;
     }
 
     /**
-     * Parse CSV strings to arrays. If you need BOM detection or character
+     * Internal function to parse CSV strings to arrays.
-     * encoding conversion, please call load_data() first, followed by a call to
+     *
-     * parse_string() with no parameters.
+     * If you need BOM detection or character encoding conversion, please call
+     * $csv->load_data($your_data_string) first, followed by a call to
+     * $csv->parse($csv->file_data).
      *
      * To detect field separators, please use auto() instead.
      *
-     * @param string $data CSV data
+     * @param string|null $data CSV data
      *
      * @return array|false - 2D array with CSV data, or false on failure
      */
-    protected function parse_string($data = null) {
+    protected function _parse_string($data = null) {
         if (empty($data)) {
             if ($this->_check_data()) {
                 $data = &$this->file_data;
@@ -625,7 +640,7 @@ class Csv {
 
         // force the parser to process end of data as a character (false) when
         // data does not end with a line feed or carriage return character.
-        $lch = $data{$strlen - 1};
+        $lch = $data[$strlen - 1];
         if ($lch != "\n" && $lch != "\r") {
             $data .= "\n";
             $strlen++;
@@ -633,8 +648,8 @@ class Csv {
 
         // walk through each character
         for ($i = 0; $i < $strlen; $i++) {
-            $ch = isset($data{$i}) ? $data{$i} : false;
+            $ch = isset($data[$i]) ? $data[$i] : false;
-            $nch = isset($data{$i + 1}) ? $data{$i + 1} : false;
+            $nch = isset($data[$i + 1]) ? $data[$i + 1] : false;
 
             // open/close quotes, and inline quotes
             if ($ch == $this->enclosure) {
@@ -664,10 +679,10 @@ class Csv {
                     $i++;
                 } elseif ($nch != $this->delimiter && $nch != "\r" && $nch != "\n") {
                     $x = $i + 1;
-                    while (isset($data{$x}) && ltrim($data{$x}, $white_spaces) == '') {
+                    while (isset($data[$x]) && ltrim($data[$x], $white_spaces) == '') {
                         $x++;
                     }
-                    if ($data{$x} == $this->delimiter) {
+                    if ($data[$x] == $this->delimiter) {
                         $enclosed = false;
                         $i = $x;
                     } else {
@@ -707,7 +722,7 @@ class Csv {
                 $col++;
 
                 // end of row
-                if ($ch == "\n" || $ch == "\r" || $ch === false) {
+                if (in_array($ch, ["\n", "\r", false], true)) {
                     if ($this->_validate_offset($row_count) && $this->_validate_row_conditions($row, $this->conditions)) {
                         if ($this->heading && empty($head)) {
                             $head = $row;
@@ -830,13 +845,28 @@ class Csv {
         }
 
         if ($this->convert_encoding) {
-            $string = iconv($this->input_encoding, $this->output_encoding, $string);
+            /** @noinspection PhpComposerExtensionStubsInspection
+             *
+             * If you receive an error at the following 3 lines, you must enable
+             * the following PHP extension:
+             *
+             *  - if $use_mb_convert_encoding is true: mbstring
+             *  - if $use_mb_convert_encoding is false: iconv
+             */
+            $string = $this->use_mb_convert_encoding ?
+                mb_convert_encoding($string, $this->output_encoding, $this->input_encoding) :
+                iconv($this->input_encoding, $this->output_encoding, $string);
         }
 
         return $string;
     }
 
-    private function _validate_fields_for_unparse($fields) {
+    /**
+     * @param array $fields
+     *
+     * @return array|false
+     */
+    private function _validate_fields_for_unparse(array $fields) {
         if (empty($fields)) {
             $fields = $this->titles;
         }
@@ -846,10 +876,10 @@ class Csv {
         }
 
         // this is needed because sometime titles property is overwritten instead of using fields parameter!
-        $titlesOnParse = !empty($this->data) ? array_keys($this->data[0]) : array();
+        $titlesOnParse = !empty($this->data) ? array_keys(reset($this->data)) : array();
 
-        // both are identical, also in ordering
+        // both are identical, also in ordering OR we have no data (only titles)
-        if (array_values($fields) === array_values($titlesOnParse)) {
+        if (empty($titlesOnParse) || array_values($fields) === array_values($titlesOnParse)) {
             return array_combine($fields, $fields);
         }
 
@@ -877,11 +907,16 @@ class Csv {
     }
 
     /**
-     * Load local file or string
+     * Load local file or string.
      *
-     * @param string|null $input local CSV file
+     * Only use this function if auto() and parse() don't handle your data well.
      *
-     * @return  true or false
+     * This function load_data() is able to handle BOMs and encodings. The data
+     * is stored within the $this->file_data class field.
+     *
+     * @param string|null $input local CSV file or CSV data as a string
+     *
+     * @return bool  True on success
      */
     public function load_data($input = null) {
         $data = null;
@@ -889,9 +924,10 @@ class Csv {
 
         if (is_null($input)) {
             $file = $this->file;
-        } elseif (file_exists($input)) {
+        } elseif (\strlen($input) <= PHP_MAXPATHLEN && file_exists($input)) {
             $file = $input;
         } else {
+            // It is CSV data as a string.
             $data = $input;
         }
 
@@ -919,6 +955,14 @@ class Csv {
             }
 
             if ($this->convert_encoding && $this->input_encoding !== $this->output_encoding) {
+                /** @noinspection PhpComposerExtensionStubsInspection
+                 *
+                 * If you receive an error at the following 3 lines, you must enable
+                 * the following PHP extension:
+                 *
+                 *  - if $use_mb_convert_encoding is true: mbstring
+                 *  - if $use_mb_convert_encoding is false: iconv
+                 */
                 $data = $this->use_mb_convert_encoding ?
                     mb_convert_encoding($data, $this->output_encoding, $this->input_encoding) :
                     iconv($this->input_encoding, $this->output_encoding, $data);
@@ -1015,10 +1059,22 @@ class Csv {
 
         if (preg_match('/^(.+) (' . $operators_regex . ') (.+)$/i', trim($condition), $capture)) {
             $field = $capture[1];
-            $op = $capture[2];
+            $op = strtolower($capture[2]);
             $value = $capture[3];
+            if ($op == 'equals' && preg_match('/^(.+) is (less|greater) than or$/i', $field, $m)) {
+                $field = $m[1];
+                $op = strtolower($m[2]) == 'less' ? '<=' : '>=';
+            }
+            if ($op == 'is' && preg_match('/^(less|greater) than (.+)$/i', $value, $m)) {
+                $value = $m[2];
+                $op = strtolower($m[1]) == 'less' ? '<' : '>';
+            }
+            if ($op == 'is' && preg_match('/^not (.+)$/i', $value, $m)) {
+                $value = $m[1];
+                $op = '!=';
+            }
 
-            if (preg_match('/^([\'\"]{1})(.*)([\'\"]{1})$/', $value, $capture) && $capture[1] == $capture[3]) {
+            if (preg_match('/^([\'"])(.*)([\'"])$/', $value, $capture) && $capture[1] == $capture[3]) {
                 $value = strtr($capture[2], array(
                     "\\n" => "\n",
                     "\\r" => "\r",
@@ -1029,7 +1085,8 @@ class Csv {
             }
 
             if (array_key_exists($field, $row)) {
-                if (($op == '=' || $op == 'equals' || $op == 'is') && $row[$field] == $value) {
+                $op_equals = in_array($op, ['=', 'equals', 'is'], true);
+                if ($op_equals && $row[$field] == $value) {
                     return '1';
                 } elseif (($op == '!=' || $op == 'is not') && $row[$field] != $value) {
                     return '1';
@@ -1073,19 +1130,19 @@ class Csv {
      * Enclose values if needed
      *  - only used by unparse()
      *
-     * @param string $value     Cell value to process
+     * @param string|null $value     Cell value to process
-     * @param string $delimiter Character to put between cells on the same row
+     * @param string      $delimiter Character to put between cells on the same row
      *
      * @return string Processed value
      */
-    protected function _enclose_value($value = null, $delimiter) {
+    protected function _enclose_value($value, $delimiter) {
         if ($value !== null && $value != '') {
             $delimiter_quoted = $delimiter ?
                 preg_quote($delimiter, '/') . "|"
                 : '';
             $enclosure_quoted = preg_quote($this->enclosure, '/');
             $pattern = "/" . $delimiter_quoted . $enclosure_quoted . "|\n|\r/i";
-            if ($this->enclose_all || preg_match($pattern, $value) || ($value{0} == ' ' || substr($value, -1) == ' ')) {
+            if ($this->enclose_all || preg_match($pattern, $value) || strpos($value, ' ') === 0 || substr($value, -1) == ' ') {
                 $value = str_replace($this->enclosure, $this->enclosure . $this->enclosure, $value);
                 $value = $this->enclosure . $value . $this->enclosure;
             }
@@ -1097,7 +1154,7 @@ class Csv {
     /**
      * Check file data
      *
-     * @param  string|null $file local filename
+     * @param string|null $file local filename
      *
      * @return bool
      */
@@ -1117,10 +1174,10 @@ class Csv {
      * Check if passed info might be delimiter
      * Only used by find_delimiter
      *
-     * @param  string $char      Potential field separating character
+     * @param string $char      Potential field separating character
-     * @param  array  $array     Frequency
+     * @param array  $array     Frequency
-     * @param  int    $depth     Number of analyzed rows
+     * @param int    $depth     Number of analyzed rows
-     * @param  string $preferred Preferred delimiter characters
+     * @param string $preferred Preferred delimiter characters
      *
      * @return string|false      special string used for delimiter selection, or false
      */
@@ -1177,12 +1234,14 @@ class Csv {
     /**
      * Write to local file
      *
-     * @param   string $file    local filename
+     * @param string $file    local filename
-     * @param   string $content data to write to file
+     * @param string $content data to write to file
-     * @param   string $mode    fopen() mode
+     * @param string $mode    fopen() mode
-     * @param   int    $lock    flock() mode
+     * @param int    $lock    flock() mode
+     *
+     * @return bool
+     *   True on success
      *
-     * @return  true or false
      */
     protected function _wfile($file, $content = '', $mode = 'wb', $lock = LOCK_EX) {
         if ($fp = fopen($file, $mode)) {
@@ -1244,7 +1303,6 @@ class Csv {
         }
 
         // remove delimiter and its line-end (the data param is by-ref!)
-        /** @noinspection CallableParameterUseCaseInTypeContextInspection */
         $data_string = substr($data_string, $pos);
         return true;
     }
@@ -1255,7 +1313,7 @@ class Csv {
      * @param string $enclosure    Enclosure character, default is double quote
      * @param string $data         The file content
      */
-    protected function _guess_delimiter($search_depth, $preferred, $enclosure, &$data) {
+    protected function _guess_delimiter($search_depth, $preferred, $enclosure, $data) {
         $chars = [];
         $strlen = strlen($data);
         $enclosed = false;
@@ -1270,9 +1328,9 @@ class Csv {
 
         // walk specific depth finding possible delimiter characters
         for ($i = 0; $i < $strlen; $i++) {
-            $ch = $data{$i};
+            $ch = $data[$i];
-            $nch = isset($data{$i + 1}) ? $data{$i + 1} : false;
+            $nch = isset($data[$i + 1]) ? $data[$i + 1] : false;
-            $pch = isset($data{$i - 1}) ? $data{$i - 1} : false;
+            $pch = isset($data[$i - 1]) ? $data[$i - 1] : false;
 
             // open and closing quotes
             $is_newline = ($ch == "\n" && $pch != "\r") || $ch == "\r";

src/enums/AbstractEnum.php

@@ -1,9 +1,9 @@
 <?php
+
 namespace ParseCsv\enums;
 
-use ReflectionClass;
-
 abstract class AbstractEnum {
+
     /**
      * Creates a new value of some type
      *
@@ -11,15 +11,14 @@ abstract class AbstractEnum {
      *
      * @throws \UnexpectedValueException if incompatible type is given.
      */
-    public function __construct($value)
+    public function __construct($value) {
-    {
         if (!$this->isValid($value)) {
             throw new \UnexpectedValueException("Value '$value' is not part of the enum " . get_called_class());
         }
         $this->value = $value;
     }
 
-    public static function getConstants(){
+    public static function getConstants() {
         $class = get_called_class();
         $reflection = new \ReflectionClass($class);
 
@@ -33,8 +32,7 @@ abstract class AbstractEnum {
      *
      * @return bool
      */
-    public static function isValid($value)
+    public static function isValid($value) {
-    {
         return in_array($value, static::getConstants(), true);
     }
 }

src/enums/FileProcessingModeEnum.php

@@ -19,7 +19,7 @@ class FileProcessingModeEnum {
     const MODE_FILE_OVERWRITE = false;
 
     public static function getAppendMode($mode) {
-        if ($mode == self::MODE_FILE_APPEND){
+        if ($mode == self::MODE_FILE_APPEND) {
             return 'ab';
         }
 

src/enums/SortEnum.php

@@ -1,8 +1,10 @@
 <?php
+
 namespace ParseCsv\enums;
 
 
 class SortEnum extends AbstractEnum {
+
     const __DEFAULT = self::SORT_TYPE_REGULAR;
 
     const SORT_TYPE_REGULAR = 'regular';
@@ -14,15 +16,14 @@ class SortEnum extends AbstractEnum {
     private static $sorting = array(
         self::SORT_TYPE_REGULAR => SORT_REGULAR,
         self::SORT_TYPE_STRING => SORT_STRING,
-        self::SORT_TYPE_NUMERIC => SORT_NUMERIC
+        self::SORT_TYPE_NUMERIC => SORT_NUMERIC,
     );
 
-    public static function getSorting($type){
+    public static function getSorting($type) {
-        if (array_key_exists($type, self::$sorting)){
+        if (array_key_exists($type, self::$sorting)) {
             return self::$sorting[$type];
         }
 
         return self::$sorting[self::__DEFAULT];
     }
-
 }

src/extensions/DatatypeTrait.php

@@ -7,10 +7,10 @@ use ParseCsv\enums\DatatypeEnum;
 trait DatatypeTrait {
 
     /**
-     * Datatypes
+     * Data Types
-     * Datatypes of CSV data-columns
+     * Data types of CSV data-columns, keyed by the column name. Possible values
+     * are string, float, integer, boolean, date. See DatatypeEnum.
      *
-     * @access public
      * @var array
      */
     public $data_types = [];
@@ -19,8 +19,6 @@ trait DatatypeTrait {
      * Check data type for one column.
      * Check for most commonly data type for one column.
      *
-     * @access private
-     *
      * @param  array $datatypes
      *
      * @return string|false
@@ -47,15 +45,13 @@ trait DatatypeTrait {
      *
      * Requires PHP >= 5.5
      *
-     * @access public
-     *
      * @uses   DatatypeEnum::getValidTypeFromSample
      *
      * @return array|bool
      */
     public function getDatatypes() {
         if (empty($this->data)) {
-            $this->data = $this->parse_string();
+            $this->data = $this->_parse_string();
         }
         if (!is_array($this->data)) {
             throw new \UnexpectedValueException('No data set yet.');
@@ -80,34 +76,28 @@ trait DatatypeTrait {
      *
      * Requires PHP >= 5.5
      *
-     * @access public
-     *
      * @uses   DatatypeEnum::getValidTypeFromSample
      *
      * @return bool
      */
-    public function autoDetectFileHasHeading(){
+    public function autoDetectFileHasHeading() {
-        if (empty($this->data)){
+        if (empty($this->data)) {
             throw new \UnexpectedValueException('No data set yet.');
         }
 
-        if ($this->heading){
+        if ($this->heading) {
             $firstRow = $this->titles;
         } else {
             $firstRow = $this->data[0];
         }
 
         $firstRow = array_filter($firstRow);
-        if (empty($firstRow)){
+        if (empty($firstRow)) {
             return false;
         }
 
         $firstRowDatatype = array_map(DatatypeEnum::class . '::getValidTypeFromSample', $firstRow);
 
-        if ($this->getMostFrequentDatatypeForColumn($firstRowDatatype) !== DatatypeEnum::TYPE_STRING){
+        return $this->getMostFrequentDatatypeForColumn($firstRowDatatype) === DatatypeEnum::TYPE_STRING;
-            return false;
-        }
-
-        return true;
     }
 }

tests/Bootstrap.php

@@ -5,9 +5,3 @@ if (!file_exists('vendor/autoload.php')) {
 }
 
 require __DIR__ . '/../vendor/autoload.php';
-
-if (!class_exists('PHPUnit\Framework\TestCase') && class_exists('PHPUnit_Framework_TestCase')) {
-    // we run on an older PHPUnit version without namespaces.
-    require_once __DIR__ . '/PHPUnit_Framework_TestCase.inc.php';
-}
-

tests/PHPUnit_Framework_TestCase.inc.php

@@ -1,11 +0,0 @@
-<?php
-
-namespace PHPUnit\Framework;
-
-// Only needed to keep unit test code compatible with older PHPUnit versions
-
-/** @noinspection PhpUndefinedClassInspection */
-/** @noinspection AutoloadingIssuesInspection */
-class TestCase extends \PHPUnit_Framework_TestCase {
-
-}

tests/methods/ConstructTest.php

@@ -59,7 +59,9 @@ class ConstructTest extends TestCase {
             /** @noinspection PhpIncludeInspection */
             require $script_file;
             $ob_get_clean = ob_get_clean();
-            if ($script_file != 'download.php') {
+            $verb = strtok($script_file, '_.');
+
+            if (!in_array($verb, ['download', 'save'], true)) {
                 $this->assertContains('<td>', $ob_get_clean);
             }
         }

tests/methods/DatatypeTest.php

@@ -8,12 +8,12 @@
 
 namespace ParseCsv\tests\methods;
 
-use PHPUnit\Framework\TestCase;
 use ParseCsv\enums\DatatypeEnum;
+use PHPUnit\Framework\TestCase;
 
-class DatatypeTest extends TestCase
+class DatatypeTest extends TestCase {
-{
+
-    public function testSampleIsValidInteger(){
+    public function testSampleIsValidInteger() {
         $this->assertEquals(DatatypeEnum::TYPE_INT, DatatypeEnum::getValidTypeFromSample('1'));
         $this->assertEquals(DatatypeEnum::TYPE_INT, DatatypeEnum::getValidTypeFromSample('+1'));
         $this->assertEquals(DatatypeEnum::TYPE_INT, DatatypeEnum::getValidTypeFromSample('-1'));
@@ -27,7 +27,7 @@ class DatatypeTest extends TestCase
         $this->assertNotEquals(DatatypeEnum::TYPE_INT, DatatypeEnum::getValidTypeFromSample('2018-02-19'));
     }
 
-    public function testSampleIsValidBool(){
+    public function testSampleIsValidBool() {
         $this->assertEquals(DatatypeEnum::TYPE_BOOL, DatatypeEnum::getValidTypeFromSample('true'));
         $this->assertEquals(DatatypeEnum::TYPE_BOOL, DatatypeEnum::getValidTypeFromSample('TRUE'));
         $this->assertEquals(DatatypeEnum::TYPE_BOOL, DatatypeEnum::getValidTypeFromSample('false'));
@@ -39,7 +39,7 @@ class DatatypeTest extends TestCase
         $this->assertNotEquals(DatatypeEnum::TYPE_BOOL, DatatypeEnum::getValidTypeFromSample('0.1'));
     }
 
-    public function testSampleIsValidFloat(){
+    public function testSampleIsValidFloat() {
         $this->assertEquals(DatatypeEnum::TYPE_FLOAT, DatatypeEnum::getValidTypeFromSample('1.0'));
         $this->assertEquals(DatatypeEnum::TYPE_FLOAT, DatatypeEnum::getValidTypeFromSample('-1.1'));
         $this->assertEquals(DatatypeEnum::TYPE_FLOAT, DatatypeEnum::getValidTypeFromSample('+1,1'));
@@ -54,7 +54,7 @@ class DatatypeTest extends TestCase
         $this->assertNotEquals(DatatypeEnum::TYPE_FLOAT, DatatypeEnum::getValidTypeFromSample('2018-02-19'));
     }
 
-    public function testSampleIsValidDate(){
+    public function testSampleIsValidDate() {
         $this->assertEquals(DatatypeEnum::TYPE_DATE, DatatypeEnum::getValidTypeFromSample('2018-02-19'));
         $this->assertEquals(DatatypeEnum::TYPE_DATE, DatatypeEnum::getValidTypeFromSample('18-2-19'));
         $this->assertEquals(DatatypeEnum::TYPE_DATE, DatatypeEnum::getValidTypeFromSample('01.02.2018'));

tests/methods/ExampleStream.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace ParseCsv\tests\methods;
+
+/**
+ * This is a very simple implementation of a stream wrapper. All URLs are mapped
+ * to just one buffer. It exists to prove that ParseCsv can read and write
+ * streams.
+ *
+ * @see https://www.php.net/manual/en/class.streamwrapper.php
+ */
+class ExampleStream {
+
+    private static $position = 0;
+
+    private static $stream_content;
+
+    public function stream_open($uri, $mode) {
+        if (strpos($mode, 'a') === false) {
+            self::$position = 0;
+        }
+        if (strpos($mode, 'w') !== false) {
+            self::$stream_content = '';
+        }
+        return true;
+    }
+
+    public function stream_read($count) {
+        $ret = substr(self::$stream_content, self::$position, $count);
+        self::$position += strlen($ret);
+        return $ret;
+    }
+
+    public function stream_write($data) {
+        $left = substr(self::$stream_content, 0, self::$position);
+        $right = substr(self::$stream_content, self::$position + strlen($data));
+        self::$stream_content = $left . $data . $right;
+        self::$position += strlen($data);
+        return strlen($data);
+    }
+
+    public function stream_stat() {
+        return ['size' => strlen(self::$stream_content)];
+    }
+
+
+    public function stream_tell() {
+        return self::$position;
+    }
+
+    public function stream_eof() {
+        return self::$position >= strlen(self::$stream_content);
+    }
+
+    public function url_stat() {
+        return ['size' => strlen(self::$stream_content)];
+    }
+
+    public function stream_seek($offset, $whence) {
+        switch ($whence) {
+            case SEEK_SET:
+                if ($offset < strlen(self::$stream_content) && $offset >= 0) {
+                    self::$position = $offset;
+                    return true;
+                } else {
+                    return false;
+                }
+                break;
+
+            case SEEK_CUR:
+                if ($offset >= 0) {
+                    self::$position += $offset;
+                    return true;
+                } else {
+                    return false;
+                }
+                break;
+
+            case SEEK_END:
+                if (strlen(self::$stream_content) + $offset >= 0) {
+                    self::$position = strlen(self::$stream_content) + $offset;
+                    return true;
+                } else {
+                    return false;
+                }
+                break;
+
+            default:
+                return false;
+        }
+    }
+
+    public function stream_lock($operation) {
+        return true;
+    }
+
+    public function stream_metadata() {
+        return false;
+    }
+}
+

tests/methods/ObjectThatHasToStringMethod.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace ParseCsv\tests\methods;
+
+/**
+ * Class HasToString is just a helper to test if cells can be objects.
+ */
+class ObjectThatHasToStringMethod {
+
+    public function __toString() {
+        return 'some value';
+    }
+}

tests/methods/ParseTest.php

@@ -4,6 +4,7 @@ namespace ParseCsv\tests\methods;
 
 use ParseCsv\Csv;
 use PHPUnit\Framework\TestCase;
+use ReflectionClass;
 
 class ParseTest extends TestCase {
 
@@ -28,6 +29,9 @@ class ParseTest extends TestCase {
         $this->parseRepetitiveString('http://looks/like/an/url');
     }
 
+    /**
+     * @param string $content
+     */
     private function parseRepetitiveString($content) {
         $this->csv->delimiter = ';';
         $this->csv->heading = false;
@@ -56,6 +60,9 @@ class ParseTest extends TestCase {
         $this->assertEquals($this->_get_magazines_data(), $this->csv->data);
     }
 
+    /**
+     * @return array
+     */
     public function autoDetectionProvider() {
         return [
             'UTF8_no_BOM' => [__DIR__ . '/../example_files/UTF-8_sep_row_but_no_BOM.csv'],
@@ -66,7 +73,9 @@ class ParseTest extends TestCase {
 
     public function testSingleColumnWithZeros() {
         $this->csv->delimiter = null;
-        $this->csv->parse("URL\nhttp://www.amazon.com/ROX-Ice-Ball-Maker-Original/dp/B00MX59NMQ/ref=sr_1_1?ie=UTF8&qid=1435604374&sr=8-1&keywords=rox,+ice+molds");
+        $this->csv->parse(
+            "URL\nhttp://www.amazon.com/ROX-Ice-Ball-Maker-Original/dp/B00MX59NMQ/ref=sr_1_1?ie=UTF8&qid=1435604374&sr=8-1&keywords=rox,+ice+molds"
+        );
         $row = array_pop($this->csv->data);
         $expected_data = ['URL' => 'http://www.amazon.com/ROX-Ice-Ball-Maker-Original/dp/B00MX59NMQ/ref=sr_1_1?ie=UTF8&qid=1435604374&sr=8-1&keywords=rox,+ice+molds'];
         $this->assertEquals($expected_data, $row);
@@ -88,14 +97,17 @@ class ParseTest extends TestCase {
         $sInput = "86545235689,a\r\n34365587654,b\r\n13469874576,\"c\r\nd\"";
         $expected_data = [86545235689, 34365587654, 13469874576];
 
-        $actual_data = $this->invokeMethod($this->csv, 'parse_string', array($sInput));
+        $actual_data = $this->invokeMethod($this->csv, '_parse_string', [$sInput]);
         $actual_column = array_map('reset', $actual_data);
         $this->assertEquals($expected_data, $actual_column);
-        $this->assertEquals([
+        $this->assertEquals(
-            'a',
+            [
-            'b',
+                'a',
-            "c\r\nd",
+                'b',
-        ], array_map('next', $actual_data));
+                "c\r\nd",
+            ],
+            array_map('next', $actual_data)
+        );
     }
 
     public function testSingleColumn() {
@@ -115,18 +127,57 @@ class ParseTest extends TestCase {
         $this->csv->output_encoding = 'UTF-8';
         $this->csv->auto(__DIR__ . '/../example_files/Piwik_API_download.csv');
         $aAction27 = array_column($this->csv->data, 'url (actionDetails 27)');
-        $this->assertEquals([
+        $this->assertEquals(
-            'http://application/_Main/_GraphicMeanSTD_MDI/btnConfBandOptions',
+            [
-            '',
+                'http://application/_Main/_GraphicMeanSTD_MDI/btnConfBandOptions',
-            '',
+                '',
-        ], $aAction27);
+                '',
+            ],
+            $aAction27
+        );
 
         $aCity = array_column($this->csv->data, 'city');
+        $this->assertEquals(
+            [
+                'São Paulo',
+                'Johannesburg',
+                '',
+            ],
+            $aCity
+        );
+    }
+
+    /**
+     * Tests if we can handle BOMs in string data, in contrast to loading files.
+     */
+    public function testStringWithLeadingBOM() {
+        $string_with_bom = strtr(
+            file_get_contents(__DIR__ . '/../example_files/UTF-8_with_BOM_and_sep_row.csv'),
+            ["sep=;\n" => '']
+        );
+
+        // Is the BOM still there?
+        self::assertSame(0xEF, ord($string_with_bom));
+
+        $this->csv->output_encoding = 'UTF-8';
+        $this->csv->delimiter = ';';
+        self::assertTrue($this->csv->load_data($string_with_bom));
+        self::assertTrue($this->csv->parse($this->csv->file_data));
+
+        // This also tests if ::load_data removed the BOM from the data;
+        // otherwise the 'title' column would have 3 extra bytes.
         $this->assertEquals([
-            'São Paulo',
+            'title',
-            'Johannesburg',
+            'isbn',
-            '',
+            'publishedAt',
-        ], $aCity);
+        ], array_keys(reset($this->csv->data)));
+
+        $titles = array_column($this->csv->data, 'title');
+        $this->assertEquals([
+            'Красивая кулинария',
+            'The Wine Connoisseurs',
+            'Weißwein',
+        ], $titles);
     }
 
     public function testWithMultipleNewlines() {
@@ -188,6 +239,17 @@ class ParseTest extends TestCase {
         $this->assertFalse($this->csv->autoDetectFileHasHeading());
     }
 
+    /**
+     * @doesNotPerformAssertions
+     */
+    public function testVeryLongNonExistingFile() {
+        $this->csv->parse(str_repeat('long_string', PHP_MAXPATHLEN));
+        $this->csv->auto(str_repeat('long_string', PHP_MAXPATHLEN));
+    }
+
+    /**
+     * @return array
+     */
     protected function _get_magazines_data() {
         return [
             [
@@ -208,7 +270,11 @@ class ParseTest extends TestCase {
         ];
     }
 
-    public function autoQuotesDataProvider() {
+    /**
+     * @return array
+     */
+    public function autoQuotesDataProvider(): array
+    {
         return array(
             array('auto-double-enclosure.csv', '"'),
             array('auto-single-enclosure.csv', "'"),
@@ -233,14 +299,14 @@ class ParseTest extends TestCase {
     /**
      * Call protected/private method of a class.
      *
-     * @param object &$object    Instantiated object that we will run method on.
+     * @param object $object     Instantiated object that we will run method on.
      * @param string $methodName Method name to call
      * @param array  $parameters Array of parameters to pass into method.
      *
      * @return mixed Method return.
      */
-    private function invokeMethod(&$object, $methodName, array $parameters = array()) {
+    private function invokeMethod($object, $methodName, $parameters = []) {
-        $reflection = new \ReflectionClass(get_class($object));
+        $reflection = new ReflectionClass(get_class($object));
         $method = $reflection->getMethod($methodName);
         $method->setAccessible(true);
 
@@ -248,7 +314,7 @@ class ParseTest extends TestCase {
     }
 
     public function testWaiverFieldSeparator() {
-        $this->assertSame(false, $this->csv->auto(__DIR__ . '/../example_files/waiver_field_separator.csv'));
+        $this->assertFalse($this->csv->auto(__DIR__ . '/../example_files/waiver_field_separator.csv'));
         $expected = [
             'liability waiver',
             'release of liability form',

tests/methods/SaveTest.php

@@ -1,11 +1,11 @@
 <?php
+
 namespace ParseCsv\tests\methods;
 
 use ParseCsv\Csv;
 use PHPUnit\Framework\TestCase;
 
-class SaveTest extends TestCase
+class SaveTest extends TestCase {
-{
 
     /** @var Csv */
     private $csv;

tests/methods/StreamTest.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace ParseCsv\tests\methods;
+
+use ParseCsv\Csv;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Writes roughly 1 MB of data. This is useful because of a limit of 8 KB
+ * encountered with stream operations in certain PHP versions.
+ */
+class StreamTest extends TestCase {
+
+    public function setUp() {
+        static $done;
+        if ($done) {
+            // Make sure we register the stream just once - or PHP will scream.
+            return;
+        }
+
+        stream_wrapper_register("example", ExampleStream::class)
+        or die("Failed to register protocol");
+        $done = 1;
+    }
+
+    public function testReadStream() {
+        $csv = new Csv();
+
+        // Write data to our stream:
+        $filename = 'example://tmp';
+        copy(__DIR__ . '/fixtures/datatype.csv', $filename);
+        $many_dots = str_repeat('.', 1000 * 1000) . ";;;;;\n";
+        file_put_contents($filename, $many_dots, FILE_APPEND);
+
+        self::assertSame(';', $csv->auto(file_get_contents($filename)));
+        self::assertCount(4, $csv->data);
+        self::assertCount(6, reset($csv->data));
+    }
+
+    public function testWriteStream() {
+        $csv = new Csv();
+        $csv->linefeed = "\n";
+        $many_dots = str_repeat('.', 1000 * 1000);
+        $csv->data = [
+            [
+                'Name' => 'Rudolf',
+                'Question' => 'Which color is his nose?',
+            ],
+            [
+                'Name' => 'Sponge Bob',
+                'Question' => 'Which shape are his pants?',
+            ],
+            [
+                'Name' => $many_dots,
+                'Question' => 'Can you count one million dots?',
+            ],
+        ];
+
+        // Just export the first column, but with a new name
+        $csv->titles = ['Name' => 'Character'];
+
+        // Write data to our stream:
+        $filename = 'example://data';
+        copy(__DIR__ . '/fixtures/datatype.csv', $filename);
+
+        self::assertSame(true, $csv->save($filename));
+        $expected = "Character\nRudolf\nSponge Bob\n";
+        $expected .= $many_dots . "\n";
+        self::assertSame($expected, file_get_contents($filename));
+    }
+}

tests/methods/UnparseTest.php

@@ -75,6 +75,31 @@ class UnparseTest extends Testcase {
         $this->unparseAndCompare($expected, $fields);
     }
 
+    public function testUnparseDefaultFirstRowMissing() {
+        unset($this->csv->data[0]);
+        $expected = "column1,column2\rvalue3,value4\r";
+        $this->unparseAndCompare($expected);
+    }
+
+    public function testUnparseDefaultWithoutData() {
+        unset($this->csv->data[0]);
+        unset($this->csv->data[1]);
+        $expected = "column1,column2\r";
+        $this->unparseAndCompare($expected);
+    }
+
+    public function testObjectCells() {
+        $this->csv->data = [
+            [
+                'column1' => new ObjectThatHasToStringMethod(),
+                'column2' => 'boring',
+            ],
+        ];
+        $this->csv->linefeed = "\n";
+        $expected = "column1,column2\nsome value,boring\n";
+        $this->unparseAndCompare($expected);
+    }
+
     private function unparseAndCompare($expected, $fields = array()) {
         $str = $this->csv->unparse($this->csv->data, $fields);
         $this->assertEquals($expected, $str);

tests/properties/BaseClass.php

@@ -11,7 +11,6 @@ class BaseClass extends TestCase {
      * CSV
      * The parseCSV object
      *
-     * @access protected
      * @var Csv
      */
     protected $csv;
@@ -19,10 +18,8 @@ class BaseClass extends TestCase {
     /**
      * Setup
      * Setup our test environment objects
-     *
-     * @access public
      */
-    public function setUp() {
+    protected function setUp() {
         $this->csv = new Csv();
     }
 

tests/properties/ConditionsTest.php

@@ -21,21 +21,93 @@ class ConditionsTest extends BaseClass {
         ]);
     }
 
-    public function testRating() {
+    public function testRatingEquals() {
-        $this->csv->conditions = 'rating < 3';
+        $rating_of_3 = [
-        $this->_compareWithExpected([
+            'The Last Templar',
+            'The Broker (Paperback)',
+            'Without Blood (Paperback)',
+        ];
+        $this->csv->conditions = 'rating = 3';
+        $this->_compareWithExpected($rating_of_3);
+        $this->csv->conditions = 'rating is 3';
+        $this->_compareWithExpected($rating_of_3);
+        $this->csv->conditions = 'rating equals 3';
+        $this->_compareWithExpected($rating_of_3);
+    }
+
+    public function testRatingNotEquals() {
+        $rating_not_4 = [
             'The Killing Kind',
             'The Third Secret',
-        ]);
+            'The Last Templar',
+            'The Traveller',
+            'Prey',
+            'The Broker (Paperback)',
+            'Without Blood (Paperback)',
+            'State of Fear (Paperback)',
+            'Digital Fortress : A Thriller (Mass Market Paperback)',
+            'Angels & Demons (Mass Market Paperback)',
+        ];
+//        $this->csv->conditions = 'rating != 4';
+//        $this->_compareWithExpected($rating_not_4);
+        $this->csv->conditions = 'rating is not 4';
+        $this->_compareWithExpected($rating_not_4);
+//        $this->csv->conditions = 'rating does not contain 4';
+//        $this->_compareWithExpected($rating_not_4);
+    }
 
-        $this->csv->conditions = 'rating >= 5';
+    public function testRatingLessThan() {
-        $this->_compareWithExpected([
+        $less_than_1 = [
+            'The Killing Kind',
+            'The Third Secret',
+        ];
+        $this->csv->conditions = 'rating < 1';
+        $this->_compareWithExpected($less_than_1);
+        $this->csv->conditions = 'rating is less than 1';
+        $this->_compareWithExpected($less_than_1);
+    }
+
+    public function testRatingLessOrEquals() {
+        $less_or_equals_1 = [
+            'The Killing Kind',
+            'The Third Secret',
+        ];
+        $this->csv->conditions = 'rating <= 1';
+        $this->_compareWithExpected($less_or_equals_1);
+        $this->csv->conditions = 'rating is less than or equals 1';
+        $this->_compareWithExpected($less_or_equals_1);
+    }
+
+    public function testRatingGreaterThan() {
+        $greater_4 = [
             'The Traveller',
             'Prey',
             'State of Fear (Paperback)',
             'Digital Fortress : A Thriller (Mass Market Paperback)',
             'Angels & Demons (Mass Market Paperback)',
-        ]);
+        ];
+        $this->csv->conditions = 'rating > 4';
+        $this->_compareWithExpected($greater_4);
+        $this->csv->conditions = 'rating is greater than 4';
+        $this->_compareWithExpected($greater_4);
+    }
+
+    public function testRatingGreaterOrEquals() {
+        $greater_or_equal_4 = [
+            'The Traveller',
+            'Crisis Four',
+            'Prey',
+            'State of Fear (Paperback)',
+            'The Rule of Four (Paperback)',
+            'Deception Point (Paperback)',
+            'Digital Fortress : A Thriller (Mass Market Paperback)',
+            'Angels & Demons (Mass Market Paperback)',
+            'The Da Vinci Code (Hardcover)',
+        ];
+        $this->csv->conditions = 'rating >= 4';
+        $this->_compareWithExpected($greater_or_equal_4);
+        $this->csv->conditions = 'rating is greater than or equals 4';
+        $this->_compareWithExpected($greater_or_equal_4);
     }
 
     public function testTitleContainsSecretOrCode() {

tests/properties/OffsetTest.php

@@ -6,6 +6,7 @@ namespace ParseCsv\tests\properties;
  * Tests related to the $offset property
  */
 class OffsetTest extends BaseClass {
+
     public function testOffsetOfOne() {
         $this->csv->offset = 1;
         $this->csv->auto(__DIR__ . '/../methods/fixtures/datatype.csv');

tests/properties/PublicPropertiesTest.php

@@ -147,25 +147,25 @@ class PublicPropertiesTest extends TestCase {
         $this->assertCount($counter, $this->properties);
     }
 
-    public function testDefaultSortTypeIsRegular(){
+    public function testDefaultSortTypeIsRegular() {
-        $this->assertEquals(SortEnum::SORT_TYPE_REGULAR,  $this->csv->sort_type);
+        $this->assertEquals(SortEnum::SORT_TYPE_REGULAR, $this->csv->sort_type);
     }
 
-    public function testSetSortType(){
+    public function testSetSortType() {
         $this->csv->sort_type = 'numeric';
-        $this->assertEquals(SortEnum::SORT_TYPE_NUMERIC,  $this->csv->sort_type);
+        $this->assertEquals(SortEnum::SORT_TYPE_NUMERIC, $this->csv->sort_type);
 
         $this->csv->sort_type = 'string';
-        $this->assertEquals(SortEnum::SORT_TYPE_STRING,  $this->csv->sort_type);
+        $this->assertEquals(SortEnum::SORT_TYPE_STRING, $this->csv->sort_type);
     }
 
-    public function testGetSorting(){
+    public function testGetSorting() {
         $this->csv->sort_type = 'numeric';
         $sorting = SortEnum::getSorting($this->csv->sort_type);
-        $this->assertEquals(SORT_NUMERIC,  $sorting);
+        $this->assertEquals(SORT_NUMERIC, $sorting);
 
         $this->csv->sort_type = 'string';
         $sorting = SortEnum::getSorting($this->csv->sort_type);
-        $this->assertEquals(SORT_STRING,  $sorting);
+        $this->assertEquals(SORT_STRING, $sorting);
     }
 }