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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: Arpad Ray <arpad@php.net>                                   |

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

  17  //

  18  // $Id: time_sleep_until.php,v 1.2 2005/12/07 21:08:57 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace time_sleep_until()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

  26   * @link        http://php.net/time_sleep_until

  27   * @author      Arpad Ray <arpad@php.net>

  28   * @version     $Revision: 1.2 $

  29   * @since       PHP 5.1.0

  30   * @require     PHP 4.0.1 (trigger_error)

  31   */
  32  if (!function_exists('time_sleep_until')) {
  33      function time_sleep_until($timestamp)
  34      {
  35          list($usec, $sec) = explode(' ', microtime());
  36          $now = $sec + $usec;
  37          if ($timestamp <= $now) {
  38              user_error('Specified timestamp is in the past', E_USER_WARNING);
  39              return false;
  40          }
  41  
  42          $diff = $timestamp - $now;
  43          usleep($diff * 1000000);
  44          return true;
  45      }
  46  }
  47      
  48  ?>