Edit report at https://bugs.php.net/bug.php?id=3830&edit=1
ID: 3830
Comment by: shiranai7 at hotmail dot com
Reported by: wico at cnh dot nl
Summary: Function to timeout/break off a function
Status: Open
Type: Feature/Change Request
Package: Scripting Engine problem
Operating System: *
PHP Version: *
Block user comment: N
Private report: N
New Comment:
Yes you can do this using ticks, because you can throw an exception from the function to interrupt
the script's flow.
Here's an example. I have testes it (PHP 5.4.0) and it worked very well.
------------------
// exception class and function
class TimeoutException extends Exception {}
function time_limit($end_time){ if(time() >= $end_time) throw new TimeoutException; }
// usage example
register_tick_function('time_limit', time() + 2); // time limit is 2 seconds
try {
// here goes the stuff we need to limit
declare(ticks = 20) {
// comment out either line to test
/* this line will cause timeout */ while(true) { $foo = 1 + 1; }
/* this line would finish in time */ sleep(1);
}
// if the script gets here the stuff finished in time
unregister_tick_function('time_limit');
echo "finished in time";
} catch(TimeoutException $e) {
// if the script gets here the stuff took too long
unregister_tick_function('time_limit');
echo "took too long";
}
Previous Comments:
------------------------------------------------------------------------
[2002-01-28 18:14:29] torben@php.net
No, you can't. :) The ticks stuff won't stop a function which
is tied up in a function call such as sleep. This does sound
like something which would be nice to have...
I've also updated the version number on this to 4.2.0-dev
Torben
------------------------------------------------------------------------
[2002-01-28 16:54:34] yohgaki@php.net
register_tick_function() can be used.
------------------------------------------------------------------------
[2000-07-31 22:49:52] waldschrott@php.net
well, could be quite nice
------------------------------------------------------------------------
[2000-03-14 11:27:16] wico at cnh dot nl
Hiya,
i did like to see a function wich breaks into another when it take to long:
<?
funtion Hour () {
sleep 3600;
}
// break after say 2 secs
$timeout = Timeout_function(hour(), 2);
if ($timeout) {
// function took to long
} else {
// function compledet normal
}
?>
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=3830&edit=1