PHP unregister_tick_function() Function
The PHP unregister_tick_function() function is used to de-register the specified function so it is no longer executed when a tick is called.
Syntax
unregister_tick_function(callback)
Parameters
callback |
Required. Specify the function to de-register. |
Return Value
No value is returned.
Example: unregister_tick_function() example
In the example below, multiple tick handler functions are used. Each function is be called in the same order as they were registered. After few tick events one of the function is de-registered.
<?php
//functions called on each tick event
function tick_handler1() {
echo "tick_handler1() is called\n";
}
function tick_handler2() {
echo "tick_handler2() is called\n\n";
}
//registering tick functions
register_tick_function('tick_handler1');
register_tick_function('tick_handler2');
declare(ticks=1); //causes a tick event
$a = 1; //causes a tick event
//de-registering first tick functions
//it also causes a tick event
unregister_tick_function('tick_handler1');
if ($a > 0) {
$a += 3; //causes a tick event
}
?>
The output of the above code will be:
tick_handler1() is called tick_handler2() is called tick_handler1() is called tick_handler2() is called tick_handler2() is called tick_handler2() is called
❮ PHP Function Handling Reference
