64) { $valid = false; } // Better check the domain too elseif ($domainlength < 1 || $domainlength > 256) { $valid = false; } // Can't be having dots at the start or end elseif ($local[0] == '.' || $local[$locallength-1] == '.') { $valid = false; } // Don't want 2 (or more) dots in the email elseif ((preg_match('/\\.\\./', $local)) || (preg_match('/\\.\\./', $domain))) { $valid = false; } // Make sure the domain has valid chars elseif (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain)) { $valid = false; } // Make sure the local has valid chars, make sure it's quoted right elseif (!preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', str_replace("\\\\","",$local))) { if (!preg_match('/^"(\\\\"|[^"])+"$/', str_replace("\\\\","",$local))) { $valid = false; } } // Whoa, made it this far? Check for domain existance! elseif (!(checkdnsrr($domain,"MX") || checkdnsrr($domain,"A"))) { $valid = false; } } if ($valid) { echo $email.' is valid!'; } else { echo $email.' is not valid!
'; } } ValidateEmail($email); } ?>

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