$re = '/\(?\b([2-9]{1}[0-9]{2})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})\b/';
$str = 'phone 908-273-7600 work
+1 973-477-0300 internation';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php