3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '~ (?P<function_name>.*?) #function name itself \s* #optional white spaces (?P<parameters>\(.*?\)) #function parameters \s* #optional white spaces ~six'; preg_match_all($regex, 'printr(abc,assdd)', $matches); print_r($matches);
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [0] => Array ( [0] => printr(abc,assdd) ) [function_name] => Array ( [0] => printr ) [1] => Array ( [0] => printr ) [parameters] => Array ( [0] => (abc,assdd) ) [2] => Array ( [0] => (abc,assdd) ) )
Output for 4.3.0 - 4.3.2
Array ( [0] => Array ( [0] => printr(abc,assdd) ) [1] => Array ( [0] => printr ) [2] => Array ( [0] => (abc,assdd) ) )

preferences:
296.06 ms | 401 KiB | 367 Q