$re = '/\d{10}\R\d{3}/\d{2}\R\d{3}/m';
$str = '1234567891
abcd :
111/22 or 111|22 (another format)
xyz :
333
product :
blablabla 456
code :
01010
serial :
8888899999
OR
1234567891|111|22|111|22|333|456|01010|8888899999|1234567891|111|22|111|22|333|456|01010|8888899999|1234567891|111|22|111|22|333|456|01010|8888899999';
preg_match_all($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