php script wont execute

[L1nuxfre4k]

 <?
exec("./zipalign -v 4 update.zip update4.zip");
?>  

this script wont work on my server for some reason
can anyone see whats wrong with it?
i want it to run that file and its in the right folder with the right permissions.

[yancek]

Have you tried full tags? Change <? to <?php.

[L1nuxfre4k]

yea and its turned on so it should accept <? also
anyways fixed
function exe($cmd){
$aret=array();
if(!$f=popen($cmd,'r')){return null;}
while(!feof($f)){
$o=fgets($f,1024);
$aret[]=$o;
}
pclose($f);
return $aret;
}

$a=exe('./zipalign -v 4 update.zip update4.zip');
foreach($a as $e){
print $e."<br />";
}
used that script
fixed it

[Schmidt]

see phpinfo() - maybe exec() is restricted? Switch on 'display_errors' - it will help you to understand the reason of error :

<?php
ini_set(‘error_reporting’, E_ALL);
ini_set(‘display_errors’, ‘On’);
/*
Your code ...
*/
?>

[barnamos]

I'd guess permissions since its exec and often webserver can't do that.

[dimsh]

propably you need to change the directory to where the `zipalign` executable resides in your file system.

<?php
chdir('/absolute/path/to/my/executable/');
exec("./zipalign -v 4 update.zip update4.zip");
?>

Also my advice is to always redirect the STDERR of your commands, like:

<?php
chdir('/absolute/path/to/my/executable/');
exec("./zipalign -v 4 update.zip update4.zip 2>&1");
?>