<?php $reg = "#^([\w-]+://?|www[\.])?[a-z0-9]+[a-z0-9\-\.]*[a-z0-9]+\.[a-z]{2,7}$#"; $domain_name = "ελληνικά.idn.icann.org"; $domain_name = @idn_to_ascii($domain_name); echo preg_match($reg, $domain_name) ? "Domain is valid." : "Domain is not valid."; ?>
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