| protected _splitFieldname ( string $field ) : array | ||
| $field | string | Field name or identifier name. |
| return | array | Returns an array with the alias (or `null` if not applicable) as first value and the field name as second value. |
protected function _splitFieldname($field)
{
$regex = '/^([a-z0-9_-]+)\\.([a-z 0-9_-]+|\\*)$/iS';
if (strpos($field, '.') !== false && preg_match($regex, $field, $matches)) {
return array($matches[1], $matches[2]);
}
return array(null, $field);
}