Zend validator

• validator
  $validator = new Zend_Validate_NotEmpty();
if($validator->isValid($username))
...
• chain
  $validatorChain = new Zend_Validate();
$validatorChain->addValidator(new Zend_Validate_NotEmpty())
->addValidator(new Zend_Validate_Alnum()));
  
• 自訂訊息
  $alnum = new Zend_Validate_Alnum();
$alnum->setMessage('非數字');
  

  Zend_Validate_EmailAddress的setMessage沒反應,v1.11前都還沒修好