PHP 7.0.14 Released

unregister_tick_function

(PHP 4 >= 4.0.3, PHP 5, PHP 7)

unregister_tick_functionDe-register a function for execution on each tick

Description

void unregister_tick_function ( string $function_name )

De-registers the function named by function_name so it is no longer executed when a tick is called.

Parameters

function_name

The function name, as a string.

Return Values

No value is returned.

See Also

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User Contributed Notes 3 notes

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2
Greg
4 years ago
It's not so clear, but, at least as of PHP 5.3.13, you cannot use this inside of the handler itself as it will throw an error:

<?php

declare(ticks=2);

function
tick_handler()
{
   
unregister_tick_function('tick_handler');
}

register_tick_function('tick_handler');

set_time_limit(0);
usleep(500000);

?>

results in:

warning: unregister_tick_function(): Unable to delete tick function executed at the moment in [filename]

So if you want to unregister it must be done outside of the handler.
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1
ElectricHeart at ya dot ru
7 months ago
You can unregister closure-function:

declare(ticks = 1000);
$startTime = microtime(true);
$tick = true;
$closure = function () use ($startTime, &$tick) {
    if (((microtime(true) - $startTime) > 5) && $tick) {
        $tick = false;
        throw new \Exception('Time to run code left');
    }
};

try {
            register_tick_function($closure);
            //do your code
            $result = 1;
            return $result;
        } catch (\Exception $e) {
            throw $e;
        } finally {
            unregister_tick_function($closure);
}
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-2
rob dot eyre at gmail dot com
5 years ago
Note that unregister_tick_function() can also accept a callback in the form of an array (either static, like array($className, $methodName) or instance, like array(&$this, $methodName)).

It cannot accept an anonymous function, however.
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