Last updated: Sun, 25 Nov 2007

register_tick_function

(PHP 4 >= 4.0.3, PHP 5)

register_tick_function — Register a function for execution on each tick

설명

bool register_tick_function ( callback $function [, mixed $arg [, mixed $... ]] )

Registers the given function to be executed when a tick is called.

매개변수

function: The function name as a string, or an array consisting of an object and a method.
arg
...

반환값

성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.

예제

Example#1 register_tick_function() example


<?php
// using a function as the callback
register_tick_function('my_function', true);

// using an object->method
$object = new my_class();
register_tick_function(array(&$object, 'my_method'), true);
?>

주의

Warning

register_tick_function() should not be used with threaded web server modules. Ticks are not working in ZTS mode and may crash your web server.

참고

add a note User Contributed Notes
register_tick_function

Jeremy
21-Jun-2007 11:03


I tried the following on an IIS 6/PHP 5 machine:



<?php

    

    set_time_limit(0);

    

    function profiler($return = false)

    {

        static $m = 0;

        if($return) return $m . " bytes";

        if(($mem = memory_get_usage()) > $m) $m = $mem;

    }

    

    register_tick_function('profiler');

    declare(ticks = 1);

    

    $numbers = array();

    for($i=0; $i<1000000; $i++)

    {

        print($i . "<br />");

    }

    

    print(profiler(true));

    

?>



...and got the following errors:



1) PHP has encountered an Unhandled Exception Code -1073741674 at 0435EC5A

2) PHP has encountered an Access Violation at 02727891

3) PHP has encountered an Access Violation at 02727879

4) PHP has encountered an Access Violation at 00000000



So far the code hasn't crashed the web server, but like the warning says, "register_tick_function() should not be used with threaded web server modules. Ticks are not working in ZTS mode and may crash your web server."



Strangely enough, the code does execute successfully every once in a while.

add a note

unregister_tick_function

register_shutdown_function

Last updated: Sun, 25 Nov 2007