Like many others I have problem with shell_exec() function in PHP. I have safe mode disabled and disabled_functions deleted from php.ini.
If I run php script from terminal (php print.php) it's working perfectly but if I run it from web browser nothing happens.
Here is the scipt:
<?php
$output = shell_exec('lp print.php');
echo "<pre>$output</pre>";
?>
Please help me. I'm running PHP 5.3.10 on Apache2. My OS is Ubuntu Server 12.4. Here is the phpinfo page: http://testni-server.info/info.php