[PHP] pobierz, plaintext 
<?php
ob_start()
$dir = shell_exec('dir B:');
if(is_null($dir))
{   // B: does not exist
    // do whatever you want with the stderr output here
	echo "blad";
}
else
{  // B: exists and $dir holds the directory listing
   // do whatever you want with it here
   echo "ok";
}
 
ob_end_clean();
?>
[PHP] pobierz, plaintext