I18N_Arabic

# Source for file WordTag.php Documentation is available at WordTag.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: Tagging Arabic Word Class * * Filename: WordTag.php * * Original Author(s): Khaled Al-Sham'aa <khaled@ar-php.org> * * Purpose: Arabic grammarians describe Arabic as being derived from * three main categories: noun, verb and particle. This class * built to recognize the class of a given Arabic word. * * ---------------------------------------------------------------------- * * Tagging Arabic Word * * This PHP Class can identifying names, places, dates, and other noun * words and phrases in Arabic language that establish the meaning of a body * of text. * * This process of identifying names, places, dates, and other noun words and * phrases that establish the meaning of a body of text-is critical to software * systems that process large amounts of unstructured data coming from sources such * as email, document files, and the Web. * * Arabic words are classifies into three main classes, namely, verb, noun and * particle. Verbs are sub classified into three subclasses (Past verbs, Present * Verbs, etc.); nouns into forty six subclasses (e.g. Active participle, Passive * participle, Exaggeration pattern, Adjectival noun, Adverbial noun, Infinitive * noun, Common noun, Pronoun, Quantifier, etc.) and particles into twenty three * subclasses (e.g. additional, resumption, Indefinite, Conditional, Conformational, * Prohibition, Imperative, Optative, Reasonal, Dubious, etc.), and from these three * main classes that the rest of the language is derived. * * The most important aspect of this system of describing Arabic is that all the * subclasses of these three main classes inherit properties from the parent * classes. * * Arabic is very rich in categorising words, and contains classes for almost every * form of word imaginable. For example, there are classes for nouns of instruments, * nouns of place and time, nouns of activity and so on. If we tried to use all the * subclasses described by Arabic grammarians, the size of the tagset would soon * reach more than two or three hundred tags. For this reason, we have chosen only * the main classes. But because of the way all the classes inherit from others, it * would be quite simple to extend this tagset to include more subclasses. * * Example: * <code> * include('./I18N/Arabic.php'); * $obj = new I18N_Arabic('WordTag'); * * $hStr=$obj->highlightText($str,'#80B020'); * * echo $str . '<hr />' . $hStr . '<hr />'; * * $taggedText = $obj->tagText($str); * * foreach($taggedText as $wordTag) { * list($word, $tag) = $wordTag; * * if ($tag == 1) { * echo "<font color=#DBEC21>$word is Noun</font>, "; * } * * if ($tag == 0) { * echo "$word is not Noun, "; * } * } * </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\WordTag(); // // use I18N\Arabic; // $obj = new Arabic\WordTag(); // // use I18N\Arabic\WordTag as WordTag; // $obj = new WordTag(); /** * This PHP class to tagging Arabic Word * * @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_WordTag { private static $_particlePreNouns = array('عن', 'في', 'مذ', 'منذ', 'من', 'الى', 'على', 'حتى', 'الا', 'غير', 'سوى', 'خلا', 'عدا', 'حاشا', 'ليس'); private static $_normalizeAlef = array('أ','إ','آ'); private static $_normalizeDiacritics = array('َ','ً','ُ','ٌ','ِ','ٍ','ْ','ّ'); /** * Loads initialize values * * @ignore */ public function __construct() { } /** * Check if given rabic word is noun or not * * @param string $word Word you want to check if it is * noun (utf-8) * @param string $word_befor The word before word you want to check * * @return boolean TRUE if given word is Arabic noun * @author Khaled Al-Sham'aa <khaled@ar-php.org> */ public static function isNoun($word, $word_befor) { $word = trim($word); $word_befor = trim($word_befor); $word = str_replace(self::$_normalizeAlef, 'ا', $word); $word_befor = str_replace(self::$_normalizeAlef, 'ا', $word_befor); $wordLen = strlen($word); // إذا سبق بحرف جر فهو اسم مجرور if (in_array($word_befor, self::$_particlePreNouns)) { return true; } // إذا سبق بعدد فهو معدود if (is_numeric($word) || is_numeric($word_befor)) { return true; } // إذا كان منون if (mb_substr($word, -1, 1) == 'ً' || mb_substr($word, -1, 1) == 'ٌ' || mb_substr($word, -1, 1) == 'ٍ' ) { return true; } $word = str_replace(self::$_normalizeDiacritics, '', $word); $wordLen = mb_strlen($word); // إن كان معرف بأل التعريف if (mb_substr($word, 0, 1) == 'ا' && mb_substr($word, 1, 1) == 'ل' && $wordLen >= 5 ) { return true; } // إذا كان في الكلمة ثلاث ألفات // إن لم تكن الألف الثالثة متطرفة if (mb_substr_count($word, 'ا') >= 3) { return true; } //إن كان مؤنث تأنيث لفظي، منتهي بتاء مربوطة // أو همزة أو ألف مقصورة if ((mb_substr($word, -1, 1) == 'ة' || mb_substr($word, -1, 1) == 'ء' || mb_substr($word, -1, 1) == 'ى') && $wordLen >= 4 ) { return true; } // مؤنث تأنيث لفظي، // منتهي بألف وتاء مفتوحة - جمع مؤنث سالم if (mb_substr($word, -1, 1) == 'ت' && mb_substr($word, -2, 1) == 'ا' && $wordLen >= 5 ) { return true; } // started by Noon, before REH or LAM, or Noon, is a verb and not a noun if (mb_substr($word, 0, 1) == 'ن' && (mb_substr($word, 1, 1) == 'ر' || mb_substr($word, 1, 1) == 'ل' || mb_substr($word, 1, 1) == 'ن') && $wordLen > 3 ) { return false; } // started by YEH, before some letters is a verb and not a noun // YEH,THAL,JEEM,HAH,KHAH,ZAIN,SHEEN,SAD,DAD,TAH,ZAH,GHAIN,KAF if (mb_substr($word, 0, 1) == 'ي' && (mb_strpos('يذجهخزشصضطظغك', mb_substr($word, 1, 1)) !== false) && $wordLen > 3 ) { return false; } // started by beh or meem, before BEH,FEH,MEEM is a noun and not a verb if ((mb_substr($word, 0, 1) == 'ب' || mb_substr($word, 0, 1) == 'م') && (mb_substr($word, 1, 1) == 'ب' || mb_substr($word, 1, 1) == 'ف' || mb_substr($word, 1, 1) == 'م') && $wordLen > 3 ) { return true; } // الكلمات التي تنتهي بياء ونون // أو ألف ونون أو ياء ونون // تكون أسماء ما لم تبدأ بأحد حروف المضارعة if (preg_match('/^[^ايتن]\S{2}[اوي]ن$/u', $word)) { return true; } // إن كان على وزن اسم الآلة // أو اسم المكان أو اسم الزمان if (preg_match('/^م\S{3}$/u', $word) || preg_match('/^م\S{2}ا\S$/u', $word) || preg_match('/^م\S{3}ة$/u', $word) || preg_match('/^\S{2}ا\S$/u', $word) || preg_match('/^\Sا\Sو\S$/u', $word) || preg_match('/^\S{2}و\S$/u', $word) || preg_match('/^\S{2}ي\S$/u', $word) || preg_match('/^م\S{2}و\S$/u', $word) || preg_match('/^م\S{2}ي\S$/u', $word) || preg_match('/^\S{3}ة$/u', $word) || preg_match('/^\S{2}ا\Sة$/u', $word) || preg_match('/^\Sا\S{2}ة$/u', $word) || preg_match('/^\Sا\Sو\Sة$/u', $word) || preg_match('/^ا\S{2}و\Sة$/u', $word) || preg_match('/^ا\S{2}ي\S$/u', $word) || preg_match('/^ا\S{3}$/u', $word) || preg_match('/^\S{3}ى$/u', $word) || preg_match('/^\S{3}اء$/u', $word) || preg_match('/^\S{3}ان$/u', $word) || preg_match('/^م\Sا\S{2}$/u', $word) || preg_match('/^من\S{3}$/u', $word) || preg_match('/^مت\S{3}$/u', $word) || preg_match('/^مست\S{3}$/u', $word) || preg_match('/^م\Sت\S{2}$/u', $word) || preg_match('/^مت\Sا\S{2}$/u', $word) || preg_match('/^\Sا\S{2}$/u', $word) ) { return true; } return false; } /** * Tag all words in a given Arabic string if they are nouns or not * * @param string $str Arabic string you want to tag all its words * * @return array Two dimension array where item[i][0] represent the word i * in the given string, and item[i][1] is 1 if that word is * noun and 0 if it is not * @author Khaled Al-Sham'aa <khaled@ar-php.org> */ public static function tagText($str) { $text = array(); $words = explode(' ', $str); $prevWord = ''; foreach ($words as $word) { if ($word == '') { continue; } if (self::isNoun($word, $prevWord)) { $text[] = array($word, 1); } else { $text[] = array($word, 0); } $prevWord = $word; } return $text; } /** * Highlighted all nouns in a given Arabic string * * @param string $str Arabic string you want to highlighted * all its nouns * @param string $style Name of the CSS class you would like to apply * * @return string Arabic string in HTML format where all nouns highlighted * @author Khaled Al-Sham'aa <khaled@ar-php.org> */ public static function highlightText($str, $style = null) { $html = ''; $prevTag = 0; $prevWord = ''; $taggedText = self::tagText($str); foreach ($taggedText as $wordTag) { list($word, $tag) = $wordTag; if ($prevTag == 1) { if (in_array($word, self::$_particlePreNouns)) { $prevWord = $word; continue; } if ($tag == 0) { $html .= "</span> \r\n"; } } else { if ($tag == 1) { $html .= " \r\n<span class=\"" . $style ."\">"; } } $html .= ' ' . $prevWord . ' ' . $word; if ($prevWord != '') { $prevWord = ''; } $prevTag = $tag; } if ($prevTag == 1) { $html .= "</span> \r\n"; } return $html; } } Documentation generated on Mon, 14 Jan 2013 17:49:10 +0100 by phpDocumentor 1.4.0