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run code in 150+ php & hhvm versions
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<?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 - 7.1.0
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) ) )