- preg_match: documentation ( source)
<?php
$ClientAddress = "5 street name\n35230 Village";
$match=null;
$AdOk = preg_match("/^([0-9a-zA-Z-, '\\n]+)(\\d{5})([, ]+)([0-9a-zA-Z-, '\\n]+)$/iu", $ClientAddress);
//var_dump($ClientAddress, $AdOk, $match);
if($AdOk)
print "Adresse ok";
else
print "Adresse failed";
?>