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https://github.com/parsecsv/parsecsv-for-php.git
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initial import of parseCSV class
git-svn-id: http://parsecsv-for-php.googlecode.com/svn/trunk@8 339761fc-0c37-0410-822d-8b8cac1f6a97
This commit is contained in:
zynode
91
ChangeLog.txt
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91
ChangeLog.txt
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@@ -0,0 +1,91 @@
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parseCSV 0.2.0 beta
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-----------------------------------
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Date: 2-Jan-2007
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- Added auto() function to automatically detect
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delimiter character.
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Useful for user upload incase delimiter is
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comma (,), tab, or semi-colon (;). Some
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versions of MS Excel for Windows use
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semi-colons instead of commas when saving to
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CSV files.
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It uses a process of elimination to eliminate
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characters that can not be the delimiter,
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so it should work on all CSV-structured files
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almost no matter what the delimiter is.
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- Generally updated some of the core workings
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to increase performance, and offer better
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support for large (1MB and up) files.
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- Added code examples to header comment.
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-----------------------------------
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parseCSV 0.1.6 beta
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-----------------------------------
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Date: 22-Dec-2006
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- Updated output() function.
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-----------------------------------
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parseCSV 0.1.5 beta
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-----------------------------------
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Date: 22-Dec-2006
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- Added output() function for easy output to
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browser, for downloading features for example.
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-----------------------------------
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parseCSV 0.1.4 beta
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-----------------------------------
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Date: 17-Dec-2006
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- Minor changes and fixes
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-----------------------------------
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parseCSV 0.1.3 beta
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-----------------------------------
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Date: 17-Dec-2006
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- Added GPL v2.0 license.
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-----------------------------------
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parseCSV 0.1.2 beta
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-----------------------------------
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Date: 17-Dec-2006
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- Added encoding() function for easier character
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encoding configuration.
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-----------------------------------
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parseCSV 0.1.1 beta
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-----------------------------------
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Date: 24-Nov-2006
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- Added support for a PHP die command on first
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line of csv files if they have a .php extension
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to protect secure data from being displayed
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directly to the browser.
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-----------------------------------
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parseCSV 0.1 beta
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-----------------------------------
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Date: 23-Nov-2006
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- Initial release
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-----------------------------------
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560
parsecsv.lib.php
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560
parsecsv.lib.php
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@@ -0,0 +1,560 @@
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<?php
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class parseCSV {
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/*
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Class: parseCSV v0.2.0 beta
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http://code.google.com/p/parsecsv-for-php/
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Created by Jim Myhrberg (jim@zydev.info).
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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 this class:
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- http://minghong.blogspot.com/2006/07/csv-parser-for-php.html
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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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This program is free software; you can redistributeit and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version. http://www.gnu.org/licenses/gpl.txt
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc., 59
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Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----------
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*/
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/**
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* Configuration
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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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# 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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# prefered 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_prefered = ",;\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 = "\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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# 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) {
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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 ($input = null) {
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if ( !empty($input) ) {
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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), $mode);
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}
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/**
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* Generate CSV based string for output
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* @param output if true, prints headers and strings to browser
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* @param filename filename sent to browser in headers if output is true
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* @param data 2D array with data
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* @param fields field names
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* @param delimiter delimiter used to seperate data
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* @return CSV data using delimiter of choice, or default
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*/
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function output ($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 = $output;
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}
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/**
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* Auto-Detect Delimiter: Find delimiter by analyzing a specific number of
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* rows to determin most probable delimiter character
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* @param file local CSV file
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* @param parse true/false parse file directly
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* @param search_depth number of rows to analyze
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* @param prefered prefered delimiter characters
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* @param enclosure enclosure character, default is double quote (").
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* @return delimiter character
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*/
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function auto ($file = null, $parse = true, $search_depth = null, $prefered = 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 ( $prefered === null ) $prefered = $this->auto_prefered;
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if ( empty($data) ) {
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if ( $this->check_data() ) {
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$data = &$this->file_data;
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} else return false;
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}
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$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 == $enclosure && (!$enclosed || $nch != $enclosure) ) {
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$enclosed = ( $enclosed ) ? false : true ;
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// inline quotes
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} elseif ( $ch == $enclosure && $enclosed ) {
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$i++;
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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, $prefered) ) {
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$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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$delimiter = reset($filtered);
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$this->delimiter = $delimiter;
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// parse data
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if ( $parse ) $this->data = $this->parse_string();
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return $delimiter;
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}
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// ==============================================
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// ----- [ Core Functions ] ---------------------
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// ==============================================
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/**
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* Load local file or string
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* @param input local CSV file
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* @return true or false
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*/
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function load_data ($input = null) {
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$data = null;
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$file = null;
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if ( $input === null ) {
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$file = $this->file;
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} elseif ( file_exists($input) ) {
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$file = $input;
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} else {
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$data = $input;
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}
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if ( !empty($data) || $data = $this->rfile($file) ) {
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if ( $this->file != $file ) $this->file = $file;
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if ( preg_match('/\.php$/i', $file) && preg_match('/<\?.*?\?>(.*)/ims', $data, $strip) ) {
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$data = ltrim($strip[1]);
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}
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if ( $this->convert_encoding ) $data = iconv($this->input_encoding, $this->output_encoding, $data);
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if ( $data[strlen($data)-1] != "\n" ) $data .= "\n";
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$this->file_data = &$data;
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return true;
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}
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return false;
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}
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/**
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* Read file to string and call parse_string()
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* @param file local CSV file
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* @return 2D array with CSV data, or false on failure
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*/
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function parse_file ($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 = &$this->file_data;
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} else return false;
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}
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$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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$enclosed = false;
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$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 and closing quotes
|
||||
if ( $ch == $this->enclosure && (!$enclosed || $nch != $this->enclosure) ) {
|
||||
$enclosed = ( $enclosed ) ? false : true ;
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|
||||
// inline quotes
|
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} elseif ( $ch == $this->enclosure && $enclosed ) {
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$current .= $ch;
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$i++;
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// end of field/row
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||||
} elseif ( ($ch == $this->delimiter || ($ch == "\n" && $pch != "\r") || $ch == "\r") && !$enclosed ) {
|
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$current = trim($current);
|
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$key = ( !empty($head[$col]) ) ? $head[$col] : $col ;
|
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$row[$key] = $current;
|
||||
$current = '';
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||||
$col++;
|
||||
|
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// end of row
|
||||
if ( $ch == "\n" || $ch == "\r" ) {
|
||||
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)) ) {
|
||||
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]]);
|
||||
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;
|
||||
} else $rows[] = $row;
|
||||
}
|
||||
$row = array();
|
||||
$col = 0;
|
||||
$row_count++;
|
||||
}
|
||||
|
||||
// append character to current field
|
||||
} else {
|
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$current .= $ch;
|
||||
}
|
||||
}
|
||||
$this->titles = $head;
|
||||
if ( !empty($this->sort_by) ) {
|
||||
( $this->sort_reverse ) ? krsort($rows) : ksort($rows) ;
|
||||
}
|
||||
return $rows;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create CSV data from array
|
||||
* @param data 2D array with data
|
||||
* @param fields field names
|
||||
* @param append if true, field names will not be output
|
||||
* @param is_php if a php die() call should be put on the first
|
||||
* 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 $string;
|
||||
}
|
||||
|
||||
|
||||
// ==============================================
|
||||
// ----- [ Internal Functions ] -----------------
|
||||
// ==============================================
|
||||
|
||||
/**
|
||||
* Enclose values if needed
|
||||
* - only used by unparse()
|
||||
* @param value string to process
|
||||
* @return Processed value
|
||||
*/
|
||||
function enclose_value ($value = null) {
|
||||
$delimiter = preg_quote($this->delimiter, '/');
|
||||
$enclosure = preg_quote($this->enclosure, '/');
|
||||
if ( preg_match("/".$delimiter."|".$enclosure."|\n|\r/i", $value) ) {
|
||||
$value = str_replace($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, $prefered) {
|
||||
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 ;
|
||||
$pref = strpos($prefered, $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;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
?>
|
||||
Reference in New Issue
Block a user