PHP 7.0.6 Released

    register_tick_function

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

    register_tick_function — Register a function for execution on each tick

    Description

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

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

    Parameters

    function

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

    arg

    ...

    Return Values

    Returns TRUE on success or FALSE on failure.

    Examples

    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);
    ?>

    Changelog

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

    Notes

    Warning

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

    See Also

    User Contributed Notes

    Jeremy
    8 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.
    Ahmad Samiei
    2 years ago
    put in in your index to find where your code exited. find die o exit

    function shutdown_find_exit()
    {
    var_dump($GLOBALS['dbg_stack']);
    }
    register_shutdown_function('shutdown_find_exit');
    function write_dbg_stack()
    {
    $GLOBALS['dbg_stack'] = debug_backtrace();
    }
    register_tick_function('write_dbg_stack');
    declare(ticks=1);
    rob dot eyre at gmail dot com
    4 years ago
    It looks like register_tick_function() can accept an anonymous function, but unregister_tick_function() cannot
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