Re: PHP ping and exec() hangs apache

Ashley Sheridan pisze:

On Wed, 2009-05-27 at 10:25 +0200, Kamil Walas wrote:

Hi, I stuck with strange error. I have following code: <?

     echo 'BEFORE';
     echo exec("ping -c1 -w1 1.1.25.38");
     echo 'AFTER';

?> Address doesn't exist. When execute script from command line everything works fine. But when I go to the file by Firefox it hangs out and apache

need to be restart. This is a Virtual Server with PHP Version 5.2.6-pl222-gentoo. When address exists it works fine. Only problem is when it doesn't respond and apache hangs. I copy file to apache at my local apache and everything works fine. My apache is with Version 5.3.0alpha3-dev at windows XP. At old server with php4 everything works fine. I suspect that something wrong is with apache configuration but I don't know it for sure and couldn't find it. Thank you, Kamil Walas

Are you sure it's crashed and is not just waiting for a reply from the remote server. How long do you leave it running before you assume it's crashed? I see it's set for a 1millisecond wait response, but what is the -c1 flag, as I'm not familiar with all the flags of a Windows ping, and a quick Google didn't reveal it. Ash www.ashleysheridan.co.uk

It is waiting. Not crash but hangs. Id don't know why. For test once I leave it for something about 2 hours - for one ping it should be enought. -c1 flag tells to send only one ping. It hangs on Gentoo. I solved it by removing exec. Now it looks like: function ping( $host, $number_port, $timeout ) { $fp = fsockopen($host, $number_port, $a, $timeout); if($fp !== FALSE ) { fclose($fp); return true;} else { return false; } } It's better than ping becouse there is also a port number check. Thanks for fast answer, Kamil Walas