Refer to the single and multiple number conversions in ROR to write a PHP single and multiple number conversion class-PHP source code

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1. [Code]Refer to the single and multiple number conversions in ROR to write a PHP single and multiple number conversion class.

$inflector = new Inflector();echo $inflector->pluralize('bus') . '
';echo $inflector->singularize('buses') . '
';

2. [File]Inflector. php

 _update_plural();    $this->_update_singular();    $this->_update_irregular();    $this->_update_uncountable();  }  public function pluralize($word) {    return $this->_apply_inflections($word, $this->plural);  }  public function singularize($word) {    return $this->_apply_inflections($word, $this->singular);  }  private function _apply_inflections($word, $rules) {    $result = $word;    if (empty($result)) return $result;    if (sizeof($this->uncountable) > 0) {      foreach($this->uncountable as $u) {        if (preg_match("#^{$u}$#", $result)) {          return $result;        }      }    }    for($i = (sizeof($rules) - 1); $i >=0; $i--) {      $rule = $rules[$i];      if (preg_match($rule[0], $result)) {        $result = preg_replace($rule[0], $rule[1], $result);        break;      }        }    return $result;  }  private function _update_plural() {    $this->_plural('/$/', 's');    $this->_plural('/s$/i', 's');    $this->_plural('/(ax|test)is$/i', '\1es');    $this->_plural('/(octop|vir)us$/i', '\1i');    $this->_plural('/(octop|vir)i$/i', '\1i');    $this->_plural('/(alias|status)$/i', '\1es');    $this->_plural('/(bu)s$/i', '\1ses');    $this->_plural('/(buffal|tomat)o$/i', '\1oes');    $this->_plural('/([ti])um$/i', '\1a');    $this->_plural('/([ti])a$/i', '\1a');    $this->_plural('/sis$/i', 'ses');    $this->_plural('/(?:([^f])fe|([lr])f)$/i', '\1\2ves');    $this->_plural('/(hive)$/i', '\1s');    $this->_plural('/([^aeiouy]|qu)y$/i', '\1ies');    $this->_plural('/(x|ch|ss|sh)$/i', '\1es');    $this->_plural('/(matr|vert|ind)(?:ix|ex)$/i', '\1ices');    $this->_plural('/(m|l)ouse$/i', '\1ice');    $this->_plural('/(m|l)ice$/i', '\1ice');    $this->_plural('/^(ox)$/i', '\1en');    $this->_plural('/^(oxen)$/i', '\1');    $this->_plural('/(quiz)$/i', '\1zes');  }  private function _update_singular() {    $this->_singular('/s$/i', '');    $this->_singular('/(n)ews$/i', '\1ews');    $this->_singular('/([ti])a$/i', '\1um');    $this->_singular('/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i', '\1\2sis');    $this->_singular('/(^analy)ses$/i', '\1sis');    $this->_singular('/([^f])ves$/i', '\1fe');    $this->_singular('/(hive)s$/i', '\1');    $this->_singular('/(tive)s$/i', '\1');    $this->_singular('/([lr])ves$/i', '\1f');    $this->_singular('/([^aeiouy]|qu)ies$/i', '\1y');    $this->_singular('/(s)eries$/i', '\1eries');    $this->_singular('/(m)ovies$/i', '\1ovie');    $this->_singular('/(x|ch|ss|sh)es$/i', '\1');    $this->_singular('/(m|l)ice$/i', '\1ouse');    $this->_singular('/(bus)es$/i', '\1');    $this->_singular('/(o)es$/i', '\1');    $this->_singular('/(shoe)s$/i', '\1');    $this->_singular('/(cris|ax|test)es$/i', '\1is');    $this->_singular('/(octop|vir)i$/i', '\1us');    $this->_singular('/(alias|status)es$/i', '\1');    $this->_singular('/^(ox)en/i', '\1');    $this->_singular('/(vert|ind)ices$/i', '\1ex');    $this->_singular('/(matr)ices$/i', '\1ix');    $this->_singular('/(quiz)zes$/i', '\1');    $this->_singular('/(database)s$/i', '\1');  }  private function _update_irregular() {    $this->_irregular('person', 'people');    $this->_irregular('man', 'men');    $this->_irregular('child', 'children');    $this->_irregular('sex', 'sexes');    $this->_irregular('move', 'moves');    $this->_irregular('cow', 'kine');    $this->_irregular('zombie', 'zombies');  }  private function _update_uncountable() {    $this->_uncountable('equipment');    $this->_uncountable('information');    $this->_uncountable('rice');    $this->_uncountable('money');    $this->_uncountable('species');    $this->_uncountable('series');    $this->_uncountable('fish');    $this->_uncountable('sheep');    $this->_uncountable('jeans');  }  private function _plural($rule, $replacement) {    if (is_string($rule)) unset($this->uncountable[$rule]);    unset($this->uncountable[$replacement]);    $this->plural[sizeof($this->plural)] = array($rule, $replacement);  }  private function _singular($rule, $replacement) {    if (is_string($rule)) unset($this->uncountable[$rule]);    unset($this->uncountable[$replacement]);    $this->singular[sizeof($this->singular)] = array($rule, $replacement);  }  private function _irregular($singular, $plural) {    unset($this->uncountable[$singular]);    unset($this->uncountable[$plural]);    if (strtoupper(substr($singular, 0, 1)) == strtoupper(substr($plural, 0, 1))) {      $this->_plural('/(' . substr($singular, 0, 1) . ')' . substr($singular, 1) . '$/i', '\1' . substr($plural, 1));      $this->_plural('/(' . substr($plural, 0, 1) . ')' . substr($plural, 1) . '$/i', '\1' . substr($plural, 1));      $this->_singular('/(' . substr($plural, 0, 1) . ')' . substr($plural, 1) . '$/i', '\1' . substr($singular, 1));    } else {      $this->_plural('/' . strtoupper(substr($singular, 0, 1)) . '(?i)' . substr($singular, 1) . '$/',         strtoupper(substr($plural, 0, 1)) . substr($plural, 1));      $this->_plural('/' . strtolower(substr($singular, 0, 1)) . '(?i)' . substr($singular, 1) . '$/',         strtolower(substr($plural, 0, 1)) . substr($plural, 1));      $this->_plural('/' . strtoupper(substr($plural, 0, 1)) . '(?i)' . substr($plural, 1) . '$/',         strtoupper(substr($plural, 0, 1)) . substr($plural, 1));      $this->_plural('/' . strtolower(substr($plural, 0, 1)) . '(?i)' . substr($plural, 1) . '$/',         strtolower(substr($plural, 0, 1)) . substr($plural, 1));      $this->_singular('/' . strtoupper(substr($plural, 0, 1)) . '(?i)' . substr($plural, 1) . '$/',         strtoupper(substr($singular, 0, 1)) . substr($singular, 1));      $this->_singular('/' . strtolower(substr($plural, 0, 1)) . '(?i)' . substr($plural, 1) . '$/',         strtolower(substr($singular, 0, 1)) . substr($singular, 1));    }  }  private function _uncountable($word) {    $this->uncountable[] = $word;  }}/* End of file inflector.php *//* Location: ./application/libraties/inflector.php */