Script php

Bonjour,
sil vous palit aide moi
jinstaller moteur de recherche qui vérifier la disponibilité de nom de domaine dans mon site j'ajoute cette script
<?php

$result = '';
$theNdd = trim($_POST['theNdd']);
$theExt = $_POST['theExt'];

if (!empty($theNdd) AND !empty($theExt)) {

$theNdd = preg_replace(array( '/http:\/\/www\./',
'/http:\/\//',
'/www\./' ),
array( '', '', '') ,$theNdd);

$theNdd = preg_replace(array( '/\.eu/',
'/\.fr/',
'/\.com/',
'/\.net/',
'/\.org/',
'/\.info/',
'/\.biz/',
'/\.de/',
'/\.me.uk/',
'/\.co.uk/',
'/\.org.uk/',
'/\.ca/' ),
array( '', '', '', '', '', '', '', '', '', '', '', '') ,$theNdd);

78 $theNdd = escapeshellcmd($theNdd);
//on definit les case du tableau à vérifier
$caseForVerif['.net']=7;
$caseForVerif['.com']=7;
$caseForVerif['.org']=0;
$caseForVerif['.fr']=13;
$caseForVerif['.ca']=5;
$caseForVerif['.info']=0;
$caseForVerif['.biz']=1;
$caseForVerif['.de']=35;
$caseForVerif['.eu']=50;
$caseForVerif['.me.uk']=30;
$caseForVerif['.co.uk']=30;
$caseForVerif['.org.uk']=40;
//on definit les phrase à vérifier dans ces cases
$strForVerif['.com']='No match for "'.$theNdd.'.COM".';
$strForVerif['.fr']='%% No entries found in the AFNIC Database.';
$strForVerif['.net']='No match for "'.$theNdd.'.NET".';
$strForVerif['.org']='NOT FOUND';
$strForVerif['.ca']='';
$strForVerif['.info']='NOT FOUND';
$strForVerif['.biz']='';
$strForVerif['.de']='';
$strForVerif['.eu']='';
$strForVerif['.me.uk']='';
$strForVerif['.co.uk']='';
$strForVerif['.org.uk']='';
foreach($theExt as $anExt) {
$myArray="";
101 $anExt=escapeshellcmd($anExt);
102 exec('whois '.$theNdd.$anExt,$myArray,$retval);
$result.=(strtolower($myArray[$caseForVerif[$anExt]])==strtolower($strForVerif[$anExt]))?"->> ".$theNdd.$anExt." est libre<br/>":"->> ".$theNdd.$anExt." est déjà réservé<br />";
}
}
?>

<form action="<?php echo $_SERVER['REQUEST_URI']; ?>" name="formVeirfNdd" enctype="multipart/form-data" method="post">
www.<input type="text" name="theNdd" value="<?php echo $theNdd; ?>" />
<input name="theExt[]" type="checkbox" value=".com" id="com" checked><label for="com">.com</label>
<input name="theExt[]" type="checkbox" value=".eu" id="eu"><label for="eu">.eu</label>
<input name="theExt[]" type="checkbox" value=".fr" id="fr"><label for="fr">.fr</label>
<input name="theExt[]" type="checkbox" value=".net" id="net"><label for="net">.net</label>
<input name="theExt[]" type="checkbox" value=".org" id="org"><label for="org">.org</label>
<input name="theExt[]" type="checkbox" value=".info" id="info"><label for="info">.info</label>
<input name="theExt[]" type="checkbox" value=".ca" id="ca"><label for="ca">.ca</label>
<input name="theExt[]" type="checkbox" value=".biz" id="biz"><label for="biz">.biz</label>
<input name="theExt[]" type="checkbox" value=".de" id="de"><label for="de">.de</label>
<input name="theExt[]" type="checkbox" value=".me.uk" id="me.uk"><label for="me.uk">me.uk</label>
<input name="theExt[]" type="checkbox" value=".co.uk" id="co.uk"><label for="co.uk">co.uk</label>
<input name="theExt[]" type="checkbox" value=".org.uk" id="org.uk"><label for="org.uk">org.uk</label>
<input type="submit" value="Vérifier">
</form>

<?php echo '<h3>'.$result.'</h3>'; ?>

mé aprés la discution il écrit ça
Warning: escapeshellcmd() has been disabled for security reasons in /home/whois.php on line 72

Warning: escapeshellcmd() has been disabled for security reasons in /home/whois.php on line 101

Warning: exec() has been disabled for security reasons in /home/whois.php on line 102


sil vous pait aide moi