Question

What should i do ?

$edit_end_date  = '2011-02-31';
$validator_date = new Zend_Validate_Date(array('format' => 'yyyy-mm-dd'));  
$isval          =   $validator_date->isValid($edit_end_date);  
if((!$isval) || empty($edit_end_date))
    {
    echo "Please Enter Valid End Date. !";
    }else{
echo "Entered Is Valid End Date. !";
}

how come it returns true date ?

Answer 1

According to the Zend API Docs, it appears that Zend_Validate_Date will only validate whether the argument passed to it, is a valid date construct (also considers locale), it will not validate if the date actually exists.

Zend_Validate_Date allows you to validate if a given value contains a date. This validator validates also localized input.

— Edit —

Looks like you can use PHP’s built in checkdate() function to determine if a date is valid or not.