$re = '/^(?:\+?(?:00)?(?:49|\(49\))|\(\+49\))(?: *\(\d{4}\)|(?: ?\d){4})? *\d\d(?:[ -]?\d\d){2}$/m';
$str = '+491739341284
+49 1739341284
(+49) 1739341284
+49 17 39 34 12 84
+49 (1739) 34 12 84
+(49) (1739) 34 12 84
+49 (1739) 34-12-84
0049 (1739) 34-12-84';
preg_match_all($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