public function isValid($value) { $valueString = (string) $value; $this->_setValue($valueString); if ('' === $valueString) { $this->_error(self::STRING_EMPTY); return false; } if (null === self::$_filter) { require_once 'Zend/Filter/Alnum.php'; self::$_filter = new Zend_Filter_Alnum(); } self::$_filter->allowWhiteSpace = $this->allowWhiteSpace; if ($valueString !== self::$_filter->filter($valueString)) { $this->_error(self::NOT_ALNUM); return false; } return true; }
/** * Defined by Zend_Validate_Interface * * Returns true if and only if $value contains only alphabetic and digit characters * * @param string $value * @return boolean */ public function isValid($value) { if (!is_string($value) && !is_int($value) && !is_float($value)) { $this->_error(self::INVALID); return false; } $this->_setValue($value); if ('' === $value) { $this->_error(self::STRING_EMPTY); return false; } if (null === self::$_filter) { /** * @see Zend_Filter_Alnum */ //require_once 'Zend/Filter/Alnum.php'; self::$_filter = new Zend_Filter_Alnum(); } self::$_filter->allowWhiteSpace = $this->allowWhiteSpace; if ($value != self::$_filter->filter($value)) { $this->_error(self::NOT_ALNUM); return false; } return true; }