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   1  <?php
   2  // +----------------------------------------------------------------------+

   3  // | PHP Version 4                                                        |

   4  // +----------------------------------------------------------------------+

   5  // | Copyright (c) 1997-2004 The PHP Group                                |

   6  // +----------------------------------------------------------------------+

   7  // | This source file is subject to version 3.0 of the PHP license,       |

   8  // | that is bundled with this package in the file LICENSE, and is        |

   9  // | available at through the world-wide-web at                           |

  10  // | http://www.php.net/license/3_0.txt.                                  |

  11  // | If you did not receive a copy of the PHP license and are unable to   |

  12  // | obtain it through the world-wide-web, please send a note to          |

  13  // | license@php.net so we can mail you a copy immediately.               |

  14  // +----------------------------------------------------------------------+

  15  // | Authors: Aidan Lister <aidan@php.net>                                |

  16  // +----------------------------------------------------------------------+

  17  //

  18  // $Id: call_user_func_array.php,v 1.13 2005/01/26 04:55:13 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace call_user_func_array()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

  26   * @link        http://php.net/function.call_user_func_array

  27   * @author      Aidan Lister <aidan@php.net>

  28   * @version     $Revision: 1.13 $

  29   * @since       PHP 4.0.4

  30   * @require     PHP 4.0.0 (user_error)

  31   */
  32  if (!function_exists('call_user_func_array')) {
  33      function call_user_func_array($function, $param_arr)
  34      {
  35          $param_arr = array_values((array) $param_arr);
  36  
  37          // Sanity check

  38          if (!is_callable($function)) {
  39              if (is_array($function) && count($function) > 2) {
  40                  $function = $function[0] . '::' . $function[1];
  41              }
  42              $error = sprintf('call_user_func_array() First argument is expected ' .
  43                  'to be a valid callback, \'%s\' was given', $function);
  44              user_error($error, E_USER_WARNING);
  45              return;
  46          }
  47  
  48          // Build argument string

  49          $arg_string = '';
  50          $comma = '';
  51          for ($i = 0, $x = count($param_arr); $i < $x; $i++) {
  52              $arg_string .= $comma . "\$param_arr[$i]";
  53              $comma = ', ';
  54          }
  55  
  56          // Determine method of calling function

  57          if (is_array($function)) {
  58              $object =& $function[0];
  59              $method = $function[1];
  60  
  61              // Static vs method call

  62              if (is_string($function[0])) {
  63                  eval("\$retval = $object::\$method($arg_string);");
  64              } else {
  65                  eval("\$retval = \$object->\$method($arg_string);");
  66              }
  67          } else {
  68              eval("\$retval = \$function($arg_string);");
  69          }
  70  
  71          return $retval;
  72      }
  73  }
  74  
  75  ?>