Controller_Validator_Abstract::resolveRuleAlias PHP Метод

    public function resolveRuleAlias($rule)
    {
        if (isset($this->alias[$rule])) {
            $rule = $this->alias[$rule];
        }
        // Only rule names are passed here,
        // not args, so a comma could only be
        // a custom message.
        // TODO: but what about array validation?
        // Probably a rare edge case, but we
        // should mention it in the docs??
        if (strpos($rule, '?') !== false) {
            list($rule, $error) = explode('?', $rule, 2);
            // Trim off any leading quote from from
            // the error message
            if (!$error) {
                $error = $this->pullRule();
            }
            $this->custom_error = preg_replace('/^\'/', '', $error);
        }
        if (substr($rule, 0, 2) === '>=') {
            $this->pushRule(substr($rule, 2));
            return 'gte';
        }
        if (substr($rule, 0, 2) === '<=') {
            $this->pushRule(substr($rule, 2));
            return 'lte';
        }
        if (substr($rule, 0, 1) === '>') {
            $this->pushRule(substr($rule, 1));
            return 'gt';
        }
        if (substr($rule, 0, 1) === '<') {
            $this->pushRule(substr($rule, 1));
            return 'lt';
        }
        if (substr($rule, 0, 2) === '!=') {
            $this->pushRule(substr($rule, 1));
            return 'ne';
        }
        if (substr($rule, 0, 1) === '=') {
            $this->pushRule(substr($rule, 1));
            return 'eqf';
        }
        if (substr($rule, 0, 1) === '[') {
            $this->pushRule($rule);
            return 'regex';
        }
        if (substr($rule, 0, 1) === '$') {
            $this->get(substr($rule, 1));
        }
        return $rule;
    }