Util::getEqualityFields

static function getEqualityFields(&$fields)
{
	$fields1 = array();
	foreach ($fields as $key => $value)
	{
		if (mb_substr($key, 0, 1) == "=")
		{
			$fields1[mb_substr($key, 1)] = $value;
			unset($fields[$key]);
		}
	}

	return $fields1;
}