Regex pb with uploading

Hi,

I'm a newbie in PHP, and I got a problem with my form. I want users to upload DV file only. So I use that :

$form->AddInput(array(
'TYPE'=>'file',
'NAME'=>'userfile',
'ValidateOnlyOnClientSide'=>1,
'ValidateRegularExpression'=>'\.(dv|DV|Dv|dV)$',
'ValidateRegularExpressionErrorMessage'=>'Wrong file',
'ValidateAsNotEmpty'=>1,
'ValidationErrorMessage'=>'It was not specified a valid file to upload'
));

When the validation on the server side is enable, it always says that the file is wrong. It works with Javascript only but it seems to me that this validation alone is a little bit "light".

Does anyone have the same problem ? Is my regular expression incorrect ?

Thanks in advance.

Using regular expressions to validate file inputs does not make much sense because the value to be validated is the contents of the file, not the file name.

To validate the file name itself, you would need to implement a custom server side validation function or develop a custom plug-in to perform new types of validation that you need.