$re = '/(?:8|\+7|7)?[-\s\(]*(?<kod>\d{3,4})?[-\s\)]*(?<phone>[\d-]{7,10})(?:[\D]+(?<dob>\d+))?\D*$/sm';
$str = '+7(985)392-75-73(1152)
+7(985)392-75-73 доб.1152
+7(985)392-75-73 доб. 78135
+7(985)392-75-73 11522
+7(985)392-75-73
+7(985)392-75-73';
preg_match_all($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