- array_map: documentation ( source)
- preg_match: documentation ( source)
- print_r: documentation ( source)
- explode: documentation ( source)
- array_fill: documentation ( source)
<?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`, `abc1234`)', $matches);
print_r($matches);
$params = explode(',', $matches['parameters']);
$chars = array_fill(0, count($params), '` ');
print_r($params);
$params2 = array_map('trim', $params, $chars);
print_r($params2);