I18N_Arabic

# Source for file CharsetD.php Documentation is available at CharsetD.php <?php /** * ---------------------------------------------------------------------- * * Copyright (c) 2006-2013 Khaled Al-Sham'aa. * * http://www.ar-php.org * * PHP Version 5 * * ---------------------------------------------------------------------- * * LICENSE * * This program is open source product; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License (LGPL) * as published by the Free Software Foundation; either version 3 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/lgpl.txt>. * * ---------------------------------------------------------------------- * * Class Name: Detect Arabic String Character Set * * Filename: CharsetD.php * * Original Author(s): Khaled Al-Sham'aa <khaled@ar-php.org> * * Purpose: This class will return Arabic character set that used for * a given Arabic string passing into this class, those available * character sets that can be detected by this class includes * the most popular three: Windows-1256, ISO 8859-6, and UTF-8. * * ---------------------------------------------------------------------- * * Detect Arabic String Character Set * * The last step of the Information Retrieval process is to display the found * documents to the user. However, some difficulties might occur at that point. * English texts are usually written in the ASCII standard. Unlike the English * language, many languages have different character sets, and do not have one * standard. This plurality of standards causes problems, especially in a web * environment. * * This PHP class will return Arabic character set that used for a given * Arabic string passing into this class, those available character sets that can * be detected by this class includes the most popular three: Windows-1256, * ISO 8859-6, and UTF-8. * * Example: * <code> * include('./I18N/Arabic.php'); * $obj = new I18N_Arabic('CharsetD'); * * $charset = $obj->getCharset($text); * </code> * * @category I18N * @package I18N_Arabic * @author Khaled Al-Sham'aa <khaled@ar-php.org> * @copyright 2006-2013 Khaled Al-Sham'aa * * @license LGPL <http://www.gnu.org/licenses/lgpl.txt> * @link http://www.ar-php.org */ // New in PHP V5.3: Namespaces // namespace I18N\Arabic; // // $obj = new I18N\Arabic\CharsetD(); // // use I18N\Arabic; // $obj = new Arabic\CharsetD(); // // use I18N\Arabic\CharsetD as CharsetD; // $obj = new CharsetD(); /** * This PHP class detect Arabic string character set * * @category I18N * @package I18N_Arabic * @author Khaled Al-Sham'aa <khaled@ar-php.org> * @copyright 2006-2013 Khaled Al-Sham'aa * * @license LGPL <http://www.gnu.org/licenses/lgpl.txt> * @link http://www.ar-php.org */ class I18N_Arabic_CharsetD { /** * Loads initialize values * * @ignore */ public function __construct() { } /** * Count number of hits for the most frequented letters in Arabic language * (Alef, Lam and Yaa), then calculate association ratio with each of * possible character set (UTF-8, Windows-1256 and ISO-8859-6) * * @param String $string Arabic string in unknown format * * @return Array Character set as key and string association ratio as value * @author Khaled Al-Sham'aa <khaled@ar-php.org> */ public function guess($string) { // The most frequent Arabic letters are Alef, Lam, and Yeh $charset['windows-1256'] = substr_count($string, chr(199)); $charset['windows-1256'] += substr_count($string, chr(225)); $charset['windows-1256'] += substr_count($string, chr(237)); $charset['iso-8859-6'] = substr_count($string, chr(199)); $charset['iso-8859-6'] += substr_count($string, chr(228)); $charset['iso-8859-6'] += substr_count($string, chr(234)); $charset['utf-8'] = substr_count($string, chr(216).chr(167)); $charset['utf-8'] += substr_count($string, chr(217).chr(132)); $charset['utf-8'] += substr_count($string, chr(217).chr(138)); $total = $charset['windows-1256'] + $charset['iso-8859-6'] + $charset['utf-8']; $charset['windows-1256'] = round($charset['windows-1256'] * 100 / $total); $charset['iso-8859-6'] = round($charset['iso-8859-6'] * 100 / $total); $charset['utf-8'] = round($charset['utf-8'] * 100 / $total); return $charset; } /** * Find the most possible character set for given Arabic string in unknown * format * * @param String $string Arabic string in unknown format * * @return String The most possible character set for given Arabic string in * unknown format[utf-8|windows-1256|iso-8859-6] * @author Khaled Al-Sham'aa <khaled@ar-php.org> */ public function getCharset($string) { if (preg_match('/<meta .* charset=([^\"]+)".*>/sim', $string, $matches)) { $value = $matches[1]; } else { $charset = $this->guess($string); arsort($charset); $value = key($charset); } return $value; } } Documentation generated on Mon, 14 Jan 2013 17:48:41 +0100 by phpDocumentor 1.4.0