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@ 2014-01-06T12:39:48Z

<?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
Performance
VLD
References
Branches

preg_match: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

78.62 ms | 402 KiB | 5 Q