Last updated: Fri, 30 Oct 2009

register_tick_function

(PHP 4 >= 4.0.3, PHP 5)

register_tick_function — Register a function for execution on each tick

Beschreibung

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

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

Parameter-Liste

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

Rückgabewerte

Gibt bei Erfolg TRUE zurück, im Fehlerfall FALSE.

Beispiele

Beispiel #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);
?>

Changelog

Version	Beschreibung
5.3.0	Ticks are now supported on threaded web server modules.

Anmerkungen

Warnung

register_tick_function() should not be used with threaded web server modules with PHP 5.2 or lower.

Siehe auch

declare
unregister_tick_function() - De-register a function for execution on each tick

add a note User Contributed Notes
register_tick_function

Jeremy
21-Jun-2007 06:03


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: Fri, 30 Oct 2009