Zend的驗證，使用Zend框架和Zend形式驗證<code>DIGIT</code>這樣的負標誌

Question

蔭位數：

$ZV_Digit=new Zend_Validate_Digits(); 
    $credit = new Zend_Form_Element_Text('credit'); 
    $credit->setLabel('current credit'); 
    $credit->setValidators(array($ZV_Digit)); 

但它不通過負數，並給出了這個錯誤：

'-4000' contains not only digit characters 

什麼我現在可以做什麼？

Answer 1

從Zend框架documentation

Note: Validating numbers 
When you want to validate numbers or numeric values, 
be aware that this validator only validates digits. 
This means that any other sign like a thousand separator 
or a comma will not pass this validator. 
In this case you should use Zend_Validate_Int or Zend_Validate_Float