includes/libs/replacers/HashtableReplacer.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 /**
  22  * Class to perform replacement based on a simple hashtable lookup
  23  */
  24 class HashtableReplacer extends Replacer {
  25         private $table, $index;
  26
  27         /**
  28          * @param array $table
  29          * @param int $index
  30          */
  31         public function __construct( $table, $index = 0 ) {
  32                 $this->table = $table;
  33                 $this->index = $index;
  34         }
  35
  36         /**
  37          * @param array $matches
  38          * @return mixed
  39          */
  40         public function replace( array $matches ) {
  41                 return $this->table[$matches[$this->index]];
  42         }
  43 }