$re = '~(?<![\/0-9])(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]?\d{2,3}[\s.-]?\d{3}~mi';
$str = '23242424 242424242 24242424424 2424244242 242 24242424/1212121212 1 05454545454 5454045454 0115545454 /454545454
23242424 242424242 24242424424 2424244242 242 24242424/1212121212 1 05454545454 5454045454 0115545454 /454545454';
preg_match_all($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