[edit] Last updated: Fri, 17 May 2013

register_tick_function

(PHP 4 >= 4.0.3, PHP 5)

register_tick_function — Register a function for execution on each tick

Descrizione

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

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

Elenco dei parametri

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

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

Esempi

Example #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);
?>

Log delle modifiche

Versione	Descrizione
5.3.0	Ticks are now supported on threaded web server modules.

Note

Avviso

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

Vedere anche:

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

add a note User Contributed Notes register_tick_function - [2 notes]

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-1

rob dot eyre at gmail dot com ¶

1 year ago


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

down

Jeremy ¶

5 years ago


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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