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run code in 200+ php & hhvm versions
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<?php function ReformatPhoneNumber($number) { $isValid = preg_match('/^(\d[ |-]*){6,11}\d$/i', $number, $result); if(!$isValid) { //throw new Exception('Division by zero.'); } return str_replace(array(' ' , '-'), array('', ''), $number); }
Output for 4.3.0 - 7.2.0