Capturing Timeout

Anon

I have a function which sometimes hangs. How can I capture the fatal error "script took longer than 30 seconds", so that it does not display an error, and does not end the processing of the script?

Anon

You'll want to read up on Connection handling:

http://www.php.net/manual/en/features.connection-handling.php

Anon

I have read that information, but it is unclear exactly how to use it for what I want.

The way I read it, I can have a function executed when a script terminates - but I cannot continue where I left off...

I want something like this...

for($i=0;$i<10;$i++){
tryThis();
if tryThis() failed{
echo "oops" but don't stop the rest of the script;
}
echo "This should print no matter what happens.";
}

Anon

Here's something I thought of...I dunno if it'll work for you or at all.

Perhaps you could make a shutdown function that calls itself if it fails:

for($i=0;$i<10;$i++){
tryThis();

// if tryThis() times out then shutdown_func() gets called.

}

// continue here if $try_this_failed=1
echo "This should print no matter what happens.";

shutdown_func {
echo "oops" but don't stop the rest of the script;
header(Location: $PHP_SELF?try_this_failed=1);
exit();
}

Anon

Hum... Why don't you use set_time_limit(0) to remove time-out ?

Anon

I want the function to time out, if it takes too long - I'm trying to get something from several websites. If one web site fails to respond, I don't want to cancel the whole script, I just want to note it and move on.

ronin

I have thre same problem.
I don't whant to cancel the whole sript if the reading from remote file fails, for example.

I realy whant to know the solvation!

I think we need something like Unix alarm() function. Am I right?

Anon

Please tell me if you figure out the answer. It's been weeks, and I'm still searching. thanks.

allending

Why don't you guys try this.

<?php

function gettime(){ //JUST FORMATS MSecs TO Secs
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = doubleval($mtime[1]) + doubleval($mtime[0]);
return ($mtime);
}

$time1 = gettime();

while (!$filedata AND $timer < 10) {
$time2 = gettime();
$timer = abs ($time2 - $time1);
$filedata = include("file.txt") //INCLUDE WHAT YOU WANT
}

Be warned, this adds a little processing overhead. Hope it helps 🙂 Please tell me if it did.

Allen Ding

allending

Clarification:

Replace 10 in ($timer < 10) with another value that you want, in seconds.

Anon

This almost works, except that $timer is not updated while the include() statement is running. It is created once each time through the loop.

Is there a way to put a timer function into another process, so that it is updated regularly, and can be checked by the while loop during execution of another script (the include file)?

Anon

Oops, i wasnt thinking when i posted this hehe. hehe.Im not sure, but I think a good way would be to try and open a socket connection to the server with a timeout that you specify (look at the sockets function) 🙂

If not, well , anyone willing to join php devolopment and start work on a multi thread launch project? 😉

mrhassell

Hrmm,

It poses an interesting one setting up moving beyond the standard timout, which by the way works in the example below. You need to look into the difference between "persistent" and "session" conexions... for example

$cfgHost="whatever.com";
$cfgPort="80";
$cfgTime=set_time_limit(90);
$fp=pfsockopen($cfgServ,$cfgPort,$cfgTime);

This will open and hold a socket on port 80 for 90 seconds or until you issue

fclose($fp);

Back to your other point of a multi threaded engine to check 4 timeout remotes... there is a 'cheap' solution for that using the system command

system('ping $cfgHost');

Hope this shed some light on what by now you must have solved... but may be of help somewhere to other peeps 😛