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<?php //$regex = '/(?P<function_name>.*?)\s*\((?P<parameters>.*?)\)\s*/i'; $regex = '/(?P<function_name>.+)\s*\((?P<parameters>[^)]+)\s*/i'; //$regex = '/(?P<function_name>.+)\s*\((?P<parameters>.*?)\)\s*/i/'; preg_match($regex, 'HOUR(date)', $matches); print_r($matches);
Output for 4.3.3 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => HOUR(date [function_name] => HOUR [1] => HOUR [parameters] => date [2] => date )
Output for 4.3.0 - 4.3.2
Array ( [0] => HOUR(date [1] => HOUR [2] => date )