3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = <<<FOO a: 1 b: 2 c: 3 FOO; preg_match_all('/(?P<name>\w+): (?P<digit>\d+)/', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER); print_r($matches); preg_match_all('/(?P<name>\w+): (?P<digit>\d+)/', $str, $matches, PREG_SET_ORDER); print_r($matches);

preferences:
47.79 ms | 402 KiB | 5 Q