register_shutdown_function
It looks like register_tick_function() can accept an anonymous function, but unregister_tick_function() cannot
register_tick_function
(PHP 4 >= 4.0.3, PHP 5)
register_tick_function — Register a function for execution on each tick
Description
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.
add a note
User Contributed Notes
register_tick_function - [2 notes]
rob dot eyre at gmail dot com ¶
1 year ago
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.