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<?php $phones = array('208-314-1243', '1294441454', '1343-132-123', 'a13-143-1234'); foreach ($phones as $phone) { $isValid = preg_match('/^\d{3}-?\d{3}-?\d{4}$/', $phone); echo "$phone is " . ($isValid ? '' : 'not') . " valid\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
208-314-1243 is valid 1294441454 is valid 1343-132-123 is not valid a13-143-1234 is not valid

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