mirror of
https://github.com/parsecsv/parsecsv-for-php.git
synced 2026-02-19 08:36:39 +00:00
- Error reporting for files/data which is corrupt or has formatting errors like using double quotes in a field without enclosing quotes. Or not escaping double quotes with a second one. - parse() method does not require input anymore if the "$object->file" property has been set. I'm calling this a beta release due to the heavy modifications to the core parsing logic required for error reporting to work. I have tested the new code quite extensively, I'm fairly confident that it still parses exactly as it always has. The second reason I'm calling it a beta release is cause I'm sure the error reporting code will need more refinements and tweaks to detect more types of errors, as it's only picking two types or syntax errors right now. However, it seems these two are the most common errors that you would be likely to come across. git-svn-id: http://parsecsv-for-php.googlecode.com/svn/trunk@28 339761fc-0c37-0410-822d-8b8cac1f6a97
755 lines
23 KiB
PHP
755 lines
23 KiB
PHP
<?php
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class parseCSV {
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/*
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Class: parseCSV v0.4 beta
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http://code.google.com/p/parsecsv-for-php/
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Fully conforms to the specifications lined out on wikipedia:
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- http://en.wikipedia.org/wiki/Comma-separated_values
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Based on the concept of Ming Hong Ng's CsvFileParser class:
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- http://minghong.blogspot.com/2006/07/csv-parser-for-php.html
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Copyright (c) 2007 Jim Myhrberg (jim@zydev.info).
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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Code Examples
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----------------
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# general usage
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$csv = new parseCSV('data.csv');
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print_r($csv->data);
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----------------
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# tab delimited, and encoding conversion
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$csv = new parseCSV();
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$csv->encoding('UTF-16', 'UTF-8');
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$csv->delimiter = "\t";
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$csv->parse('data.tsv');
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print_r($csv->data);
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----------------
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# auto-detect delimiter character
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$csv = new parseCSV();
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$csv->auto('data.csv');
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print_r($csv->data);
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----------------
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# modify data in a csv file
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$csv = new parseCSV();
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$csv->sort_by = 'id';
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$csv->parse('data.csv');
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# "4" is the value of the "id" column of the CSV row
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$csv->data[4] = array('firstname' => 'John', 'lastname' => 'Doe', 'email' => 'john@doe.com');
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$csv->save();
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----------------
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# add row/entry to end of CSV file
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# - only recommended when you know the extact sctructure of the file
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$csv = new parseCSV();
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$csv->save('data.csv', array('1986', 'Home', 'Nowhere', ''), true);
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----------------
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# convert 2D array to csv data and send headers
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# to browser to treat output as a file and download it
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$csv = new parseCSV();
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$csv->output (true, 'movies.csv', $array);
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----------------
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*/
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/**
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* Configuration
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* - set these options with $object->var_name = 'value';
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*/
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# use first line/entry as field names
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var $heading = true;
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# override field names
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var $fields = array();
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# sort entries by this field
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var $sort_by = null;
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var $sort_reverse = false;
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# delimiter (comma) and enclosure (double quote)
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var $delimiter = ',';
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var $enclosure = '"';
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# basic SQL-like conditions for row matching
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var $conditions = null;
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# number of rows to ignore from beginning of data
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var $offset = null;
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# limits the number of returned rows to specified amount
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var $limit = null;
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# number of rows to analyze when attempting to auto-detect delimiter
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var $auto_depth = 15;
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# characters to ignore when attempting to auto-detect delimiter
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var $auto_non_chars = "a-zA-Z0-9\n\r";
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# preferred delimiter characters, only used when all filtering method
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# returns multiple possible delimiters (happens very rarely)
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var $auto_preferred = ",;\t.:|";
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# character encoding options
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var $convert_encoding = false;
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var $input_encoding = 'ISO-8859-1';
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var $output_encoding = 'ISO-8859-1';
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# used by unparse(), save(), and output() functions
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var $linefeed = "\r\n";
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# only used by output() function
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var $output_delimiter = ',';
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var $output_filename = 'data.csv';
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/**
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* Internal variables
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*/
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# current file
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var $file;
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# loaded file contents
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var $file_data;
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# error while parsing input data
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# 0 = No errors found. Everything should be fine :)
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# 1 = Hopefully correctable syntax error was found.
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# 2 = Enclosure character (double quote by default)
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# was found in non-enclosed field. This means
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# the file is either corrupt, or does not
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# standard CSV formatting. Please validate
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# the parsed data yourself.
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var $error = 0;
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# detailed error info
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var $error_info = array();
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# array of field values in data parsed
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var $titles = array();
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# two dimentional array of CSV data
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var $data = array();
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/**
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* Constructor
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* @param input CSV file or string
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* @return nothing
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*/
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function parseCSV ($input = null, $offset = null, $limit = null, $conditions = null) {
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if ( $offset !== null ) $this->offset = $offset;
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if ( $limit !== null ) $this->limit = $limit;
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if ( count($conditions) > 0 ) $this->conditions = $conditions;
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if ( !empty($input) ) $this->parse($input);
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}
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// ==============================================
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// ----- [ Main Functions ] ---------------------
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// ==============================================
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/**
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* Parse CSV file or string
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* @param input CSV file or string
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* @return nothing
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*/
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function parse ($input = null, $offset = null, $limit = null, $conditions = null) {
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if ( $input === null ) $input = $this->file;
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if ( !empty($input) ) {
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if ( $offset !== null ) $this->offset = $offset;
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if ( $limit !== null ) $this->limit = $limit;
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if ( count($conditions) > 0 ) $this->conditions = $conditions;
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if ( is_readable($input) ) {
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$this->data = $this->parse_file($input);
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} else {
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$this->file_data = &$input;
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$this->data = $this->parse_string();
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}
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if ( $this->data === false ) return false;
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}
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return true;
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}
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/**
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* Save changes, or new file and/or data
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* @param file file to save to
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* @param data 2D array with data
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* @param append append current data to end of target CSV if exists
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* @param fields field names
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* @return true or false
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*/
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function save ($file = null, $data = array(), $append = false, $fields = array()) {
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if ( empty($file) ) $file = &$this->file;
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$mode = ( $append ) ? 'at' : 'wt' ;
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$is_php = ( preg_match('/\.php$/i', $file) ) ? true : false ;
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return $this->_wfile($file, $this->unparse($data, $fields, $append, $is_php), $mode);
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}
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/**
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* Generate CSV based string for output
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* @param output if true, prints headers and strings to browser
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* @param filename filename sent to browser in headers if output is true
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* @param data 2D array with data
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* @param fields field names
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* @param delimiter delimiter used to separate data
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* @return CSV data using delimiter of choice, or default
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*/
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function output ($output = true, $filename = null, $data = array(), $fields = array(), $delimiter = null) {
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if ( empty($filename) ) $filename = $this->output_filename;
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if ( $delimiter === null ) $delimiter = $this->output_delimiter;
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$data = $this->unparse($data, $fields, null, null, $delimiter);
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if ( $output ) {
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header('Content-type: application/csv');
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header('Content-Disposition: inline; filename="'.$filename.'"');
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echo $data;
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}
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return $data;
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}
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/**
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* Convert character encoding
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* @param input input character encoding, uses default if left blank
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* @param output output character encoding, uses default if left blank
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* @return nothing
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*/
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function encoding ($input = null, $output = null) {
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$this->convert_encoding = true;
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if ( $input !== null ) $this->input_encoding = $input;
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if ( $output !== null ) $this->output_encoding = $output;
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}
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/**
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* Auto-Detect Delimiter: Find delimiter by analyzing a specific number of
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* rows to determine most probable delimiter character
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* @param file local CSV file
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* @param parse true/false parse file directly
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* @param search_depth number of rows to analyze
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* @param preferred preferred delimiter characters
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* @param enclosure enclosure character, default is double quote (").
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* @return delimiter character
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*/
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function auto ($file = null, $parse = true, $search_depth = null, $preferred = null, $enclosure = null) {
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if ( $file === null ) $file = $this->file;
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if ( empty($search_depth) ) $search_depth = $this->auto_depth;
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if ( $enclosure === null ) $enclosure = $this->enclosure;
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if ( $preferred === null ) $preferred = $this->auto_preferred;
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if ( empty($this->file_data) ) {
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if ( $this->_check_data($file) ) {
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$data = &$this->file_data;
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} else return false;
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} else {
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$data = &$this->file_data;
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}
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$chars = array();
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$strlen = strlen($data);
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$enclosed = false;
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$n = 1;
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$to_end = true;
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// walk specific depth finding posssible delimiter characters
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for ( $i=0; $i < $strlen; $i++ ) {
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$ch = $data{$i};
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$nch = ( isset($data{$i+1}) ) ? $data{$i+1} : false ;
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$pch = ( isset($data{$i-1}) ) ? $data{$i-1} : false ;
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// open and closing quotes
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if ( $ch == $enclosure ) {
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if ( !$enclosed || $nch != $enclosure ) {
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$enclosed = ( $enclosed ) ? false : true ;
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} elseif ( $enclosed ) {
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$i++;
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}
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// end of row
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} elseif ( ($ch == "\n" && $pch != "\r" || $ch == "\r") && !$enclosed ) {
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if ( $n >= $search_depth ) {
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$strlen = 0;
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$to_end = false;
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} else {
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$n++;
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}
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// count character
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} elseif (!$enclosed) {
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if ( !preg_match('/['.preg_quote($this->auto_non_chars, '/').']/i', $ch) ) {
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if ( !isset($chars[$ch][$n]) ) {
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$chars[$ch][$n] = 1;
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} else {
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$chars[$ch][$n]++;
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}
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}
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}
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}
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// filtering
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$depth = ( $to_end ) ? $n-1 : $n ;
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$filtered = array();
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foreach( $chars as $char => $value ) {
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if ( $match = $this->_check_count($char, $value, $depth, $preferred) ) {
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$filtered[$match] = $char;
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}
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}
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// capture most probable delimiter
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ksort($filtered);
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$this->delimiter = reset($filtered);
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// parse data
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if ( $parse ) $this->data = $this->parse_string();
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return $this->delimiter;
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}
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// ==============================================
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// ----- [ Core Functions ] ---------------------
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// ==============================================
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/**
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* Read file to string and call parse_string()
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* @param file local CSV file
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* @return 2D array with CSV data, or false on failure
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*/
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function parse_file ($file = null) {
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if ( $file === null ) $file = $this->file;
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if ( empty($this->file_data) ) $this->load_data($file);
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return ( !empty($this->file_data) ) ? $this->parse_string() : false ;
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}
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/**
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* Parse CSV strings to arrays
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* @param data CSV string
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* @return 2D array with CSV data, or false on failure
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*/
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function parse_string ($data = null) {
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if ( empty($data) ) {
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if ( $this->_check_data() ) {
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$data = &$this->file_data;
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} else return false;
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}
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$white_spaces = str_replace($this->delimiter, '', " \t\x0B\0");
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$rows = array();
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$row = array();
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$row_count = 0;
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$current = '';
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$head = ( !empty($this->fields) ) ? $this->fields : array() ;
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$col = 0;
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$enclosed = false;
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$was_enclosed = false;
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$strlen = strlen($data);
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// walk through each character
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for ( $i=0; $i < $strlen; $i++ ) {
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$ch = $data{$i};
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$nch = ( isset($data{$i+1}) ) ? $data{$i+1} : false ;
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$pch = ( isset($data{$i-1}) ) ? $data{$i-1} : false ;
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// open/close quotes, and inline quotes
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if ( $ch == $this->enclosure ) {
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if ( !$enclosed ) {
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if ( ltrim($current, $white_spaces) == '' ) {
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$enclosed = true;
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$was_enclosed = true;
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} else {
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$this->error = 2;
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$error_row = count($rows) + 1;
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$error_col = $col + 1;
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if ( !isset($this->error_info[$error_row.'-'.$error_col]) ) {
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$this->error_info[$error_row.'-'.$error_col] = array(
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'type' => 2,
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'info' => 'Syntax error found on row '.$error_row.'. Non-enclosed fields can not contain double-quotes.',
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'row' => $error_row,
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'field' => $error_col,
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'field_name' => (!empty($head[$col])) ? $head[$col] : null,
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);
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}
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$current .= $ch;
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}
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} elseif ($nch == $this->enclosure) {
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$current .= $ch;
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$i++;
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} elseif ( $nch != $this->delimiter && $nch != "\r" && $nch != "\n" ) {
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for ( $x=($i+1); isset($data{$x}) && ltrim($data{$x}, $white_spaces) == ''; $x++ ) {}
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if ( $data{$x} == $this->delimiter ) {
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$enclosed = false;
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$i = $x;
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} else {
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if ( $this->error < 1 ) {
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$this->error = 1;
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}
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$error_row = count($rows) + 1;
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$error_col = $col + 1;
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if ( !isset($this->error_info[$error_row.'-'.$error_col]) ) {
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$this->error_info[$error_row.'-'.$error_col] = array(
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'type' => 1,
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'info' =>
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'Syntax error found on row '.(count($rows) + 1).'. '.
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'A single double-quote was found within an enclosed string. '.
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'Enclosed double-quotes must be escaped with a second double-quote.',
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'row' => count($rows) + 1,
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'field' => $col + 1,
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'field_name' => (!empty($head[$col])) ? $head[$col] : null,
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);
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}
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$current .= $ch;
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$enclosed = false;
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}
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} else {
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$enclosed = false;
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}
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// end of field/row
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} elseif ( ($ch == $this->delimiter || $ch == "\n" || $ch == "\r") && !$enclosed ) {
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$key = ( !empty($head[$col]) ) ? $head[$col] : $col ;
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$row[$key] = ( $was_enclosed ) ? $current : trim($current) ;
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$current = '';
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$was_enclosed = false;
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$col++;
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// end of row
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if ( $ch == "\n" || $ch == "\r" ) {
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if ( $this->_validate_offset($row_count) && $this->_validate_row_conditions($row, $this->conditions) ) {
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if ( $this->heading && empty($head) ) {
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$head = $row;
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} elseif ( empty($this->fields) || (!empty($this->fields) && (($this->heading && $row_count > 0) || !$this->heading)) ) {
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if ( !empty($this->sort_by) && !empty($row[$this->sort_by]) ) {
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if ( isset($rows[$row[$this->sort_by]]) ) {
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$rows[$row[$this->sort_by].'_0'] = &$rows[$row[$this->sort_by]];
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unset($rows[$row[$this->sort_by]]);
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for ( $sn=1; isset($rows[$row[$this->sort_by].'_'.$sn]); $sn++ ) {}
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$rows[$row[$this->sort_by].'_'.$sn] = $row;
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} else $rows[$row[$this->sort_by]] = $row;
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} else $rows[] = $row;
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}
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}
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$row = array();
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$col = 0;
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$row_count++;
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if ( $this->sort_by === null && $this->limit !== null && count($rows) == $this->limit ) {
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$i = $strlen;
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}
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if ( $ch == "\r" && $nch == "\n" ) $i++;
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}
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// append character to current field
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} else {
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$current .= $ch;
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}
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}
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$this->titles = $head;
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if ( !empty($this->sort_by) ) {
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( $this->sort_reverse ) ? krsort($rows) : ksort($rows) ;
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if ( $this->offset !== null || $this->limit !== null ) {
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$rows = array_slice($rows, ($this->offset === null ? 0 : $this->offset) , $this->limit, true);
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}
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}
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return $rows;
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}
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/**
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* Create CSV data from array
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* @param data 2D array with data
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* @param fields field names
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* @param append if true, field names will not be output
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* @param is_php if a php die() call should be put on the first
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* line of the file, this is later ignored when read.
|
|
* @param delimiter field delimiter to use
|
|
* @return CSV data (text string)
|
|
*/
|
|
function unparse ( $data = array(), $fields = array(), $append = false , $is_php = false, $delimiter = null) {
|
|
if ( !is_array($data) || empty($data) ) $data = &$this->data;
|
|
if ( !is_array($fields) || empty($fields) ) $fields = &$this->titles;
|
|
if ( $delimiter === null ) $delimiter = $this->delimiter;
|
|
|
|
$string = ( $is_php ) ? "<?php header('Status: 403'); die(' '); ?>".$this->linefeed : '' ;
|
|
$entry = array();
|
|
|
|
// create heading
|
|
if ( $this->heading && !$append ) {
|
|
foreach( $fields as $key => $value ) {
|
|
$entry[] = $this->_enclose_value($value);
|
|
}
|
|
$string .= implode($delimiter, $entry).$this->linefeed;
|
|
$entry = array();
|
|
}
|
|
|
|
// create data
|
|
foreach( $data as $key => $row ) {
|
|
foreach( $row as $field => $value ) {
|
|
$entry[] = $this->_enclose_value($value);
|
|
}
|
|
$string .= implode($delimiter, $entry).$this->linefeed;
|
|
$entry = array();
|
|
}
|
|
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* Load local file or string
|
|
* @param input local CSV file
|
|
* @return true or false
|
|
*/
|
|
function load_data ($input = null) {
|
|
$data = null;
|
|
$file = null;
|
|
if ( $input === null ) {
|
|
$file = $this->file;
|
|
} elseif ( file_exists($input) ) {
|
|
$file = $input;
|
|
} else {
|
|
$data = $input;
|
|
}
|
|
if ( !empty($data) || $data = $this->_rfile($file) ) {
|
|
if ( $this->file != $file ) $this->file = $file;
|
|
if ( preg_match('/\.php$/i', $file) && preg_match('/<\?.*?\?>(.*)/ims', $data, $strip) ) {
|
|
$data = ltrim($strip[1]);
|
|
}
|
|
if ( $this->convert_encoding ) $data = iconv($this->input_encoding, $this->output_encoding, $data);
|
|
if ( substr($data, -1) != "\n" ) $data .= "\n";
|
|
$this->file_data = &$data;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ==============================================
|
|
// ----- [ Internal Functions ] -----------------
|
|
// ==============================================
|
|
|
|
/**
|
|
* Validate a row against specified conditions
|
|
* @param row array with values from a row
|
|
* @param conditions specified conditions that the row must match
|
|
* @return true of false
|
|
*/
|
|
function _validate_row_conditions ($row = array(), $conditions = null) {
|
|
if ( !empty($row) ) {
|
|
if ( !empty($conditions) ) {
|
|
$conditions = (strpos($conditions, ' OR ') !== false) ? explode(' OR ', $conditions) : array($conditions) ;
|
|
$or = '';
|
|
foreach( $conditions as $key => $value ) {
|
|
if ( strpos($value, ' AND ') !== false ) {
|
|
$value = explode(' AND ', $value);
|
|
$and = '';
|
|
foreach( $value as $k => $v ) {
|
|
$and .= $this->_validate_row_condition($row, $v);
|
|
}
|
|
$or .= (strpos($and, '0') !== false) ? '0' : '1' ;
|
|
} else {
|
|
$or .= $this->_validate_row_condition($row, $value);
|
|
}
|
|
}
|
|
return (strpos($or, '1') !== false) ? true : false ;
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Validate a row against a single condition
|
|
* @param row array with values from a row
|
|
* @param condition specified condition that the row must match
|
|
* @return true of false
|
|
*/
|
|
function _validate_row_condition ($row, $condition) {
|
|
$operators = array(
|
|
'=', 'equals', 'is',
|
|
'!=', 'is not',
|
|
'<', 'is less than',
|
|
'>', 'is greater than',
|
|
'<=', 'is less than or equals',
|
|
'>=', 'is greater than or equals',
|
|
'contains',
|
|
'does not contain',
|
|
);
|
|
$operators_regex = array();
|
|
foreach( $operators as $value ) {
|
|
$operators_regex[] = preg_quote($value, '/');
|
|
}
|
|
$operators_regex = implode('|', $operators_regex);
|
|
if ( preg_match('/^(.+) ('.$operators_regex.') (.+)$/i', trim($condition), $capture) ) {
|
|
$field = $capture[1];
|
|
$op = $capture[2];
|
|
$value = $capture[3];
|
|
if ( preg_match('/^([\'\"]{1})(.*)([\'\"]{1})$/i', $value, $capture) ) {
|
|
if ( $capture[1] == $capture[3] ) {
|
|
$value = $capture[2];
|
|
$value = str_replace("\\n", "\n", $value);
|
|
$value = str_replace("\\r", "\r", $value);
|
|
$value = str_replace("\\t", "\t", $value);
|
|
$value = stripslashes($value);
|
|
}
|
|
}
|
|
if ( array_key_exists($field, $row) ) {
|
|
if ( ($op == '=' || $op == 'equals' || $op == 'is') && $row[$field] == $value ) {
|
|
return '1';
|
|
} elseif ( ($op == '!=' || $op == 'is not') && $row[$field] != $value ) {
|
|
return '1';
|
|
} elseif ( ($op == '<' || $op == 'is less than' ) && $row[$field] < $value ) {
|
|
return '1';
|
|
} elseif ( ($op == '>' || $op == 'is greater than') && $row[$field] > $value ) {
|
|
return '1';
|
|
} elseif ( ($op == '<=' || $op == 'is less than or equals' ) && $row[$field] <= $value ) {
|
|
return '1';
|
|
} elseif ( ($op == '>=' || $op == 'is greater than or equals') && $row[$field] >= $value ) {
|
|
return '1';
|
|
} elseif ( $op == 'contains' && preg_match('/'.preg_quote($value, '/').'/i', $row[$field]) ) {
|
|
return '1';
|
|
} elseif ( $op == 'does not contain' && !preg_match('/'.preg_quote($value, '/').'/i', $row[$field]) ) {
|
|
return '1';
|
|
} else {
|
|
return '0';
|
|
}
|
|
}
|
|
}
|
|
return '1';
|
|
}
|
|
|
|
/**
|
|
* Validates if the row is within the offset or not if sorting is disabled
|
|
* @param current_row the current row number being processed
|
|
* @return true of false
|
|
*/
|
|
function _validate_offset ($current_row) {
|
|
if ( $this->sort_by === null && $this->offset !== null && $current_row < $this->offset ) return false;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Enclose values if needed
|
|
* - only used by unparse()
|
|
* @param value string to process
|
|
* @return Processed value
|
|
*/
|
|
function _enclose_value ($value = null) {
|
|
if ( $value !== null && $value != '' ) {
|
|
$delimiter = preg_quote($this->delimiter, '/');
|
|
$enclosure = preg_quote($this->enclosure, '/');
|
|
if ( preg_match("/".$delimiter."|".$enclosure."|\n|\r/i", $value) || ($value{0} == ' ' || substr($value, -1) == ' ') ) {
|
|
$value = str_replace($this->enclosure, $this->enclosure.$this->enclosure, $value);
|
|
$value = $this->enclosure.$value.$this->enclosure;
|
|
}
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Check file data
|
|
* @param file local filename
|
|
* @return true or false
|
|
*/
|
|
function _check_data ($file = null) {
|
|
if ( empty($this->file_data) ) {
|
|
if ( $file === null ) $file = $this->file;
|
|
return $this->load_data($file);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Check if passed info might be delimiter
|
|
* - only used by find_delimiter()
|
|
* @return special string used for delimiter selection, or false
|
|
*/
|
|
function _check_count ($char, $array, $depth, $preferred) {
|
|
if ( $depth == count($array) ) {
|
|
$first = null;
|
|
$equal = null;
|
|
$almost = false;
|
|
foreach( $array as $key => $value ) {
|
|
if ( $first == null ) {
|
|
$first = $value;
|
|
} elseif ( $value == $first && $equal !== false) {
|
|
$equal = true;
|
|
} elseif ( $value == $first+1 && $equal !== false ) {
|
|
$equal = true;
|
|
$almost = true;
|
|
} else {
|
|
$equal = false;
|
|
}
|
|
}
|
|
if ( $equal ) {
|
|
$match = ( $almost ) ? 2 : 1 ;
|
|
$pref = strpos($preferred, $char);
|
|
$pref = ( $pref !== false ) ? str_pad($pref, 3, '0', STR_PAD_LEFT) : '999' ;
|
|
return $pref.$match.'.'.(99999 - str_pad($first, 5, '0', STR_PAD_LEFT));
|
|
} else return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read local file
|
|
* @param file local filename
|
|
* @return Data from file, or false on failure
|
|
*/
|
|
function _rfile ($file = null) {
|
|
if ( is_readable($file) ) {
|
|
if ( !($fh = fopen($file, 'r')) ) return false;
|
|
$data = fread($fh, filesize($file));
|
|
fclose($fh);
|
|
return $data;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Write to local file
|
|
* @param file local filename
|
|
* @param string data to write to file
|
|
* @param mode fopen() mode
|
|
* @param lock flock() mode
|
|
* @return true or false
|
|
*/
|
|
function _wfile ($file, $string = '', $mode = 'wb', $lock = 2) {
|
|
if ( $fp = fopen($file, $mode) ) {
|
|
flock($fp, $lock);
|
|
$re = fwrite($fp, $string);
|
|
$re2 = fclose($fp);
|
|
if ( $re != false && $re2 != false ) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
?>
|