/** * Returns only the alphabetic characters and digits in value. * * @param mixed $key * @return mixed */ public function getAlnum($key) { if (!$this->keyExists($key)) { return false; } return Zend_Filter::getAlnum($this->_source[$key]); }
/** * Returns only the alphabetic characters and digits in value. * * @param mixed $key * @return mixed */ public function getAlnum($key = null) { if (!($value = $this->keyExists($key))) { return false; } return Zend_Filter::getAlnum($value); }
/** * Returns only the alphabetic characters and digits in value. * * @param mixed $key * @return mixed */ public function getAlnum($key) { return Zend_Filter::getAlnum($this->_source[$key]); }