[edit] Last updated: Fri, 18 May 2012

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 ( callable $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 wird FALSE zurückgegeben.

Beispiele

Beispiel #1 register_tick_function() example


<?php
declare(ticks=1);

// 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

rob dot eyre at gmail dot com 22-Jul-2011 05:19


It looks like register_tick_function() can accept an anonymous function, but unregister_tick_function() cannot

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.

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