PHP filter_input: how to return NULL when it is empty from the input

[lauthiamkok]

Hi,

How can I return NULL with `filter_input` when the input is empty?

$title = filter_input(INPUT_POST, 'title');
    var_dump($title); 

it returns,

string '' (length=0) 

but I want,

null 

Thanks.

[chris.upjohn]

You can only get NULL as the return value if the $variable is not set or fails to be filtered.

[lauthiamkok]

You can only get NULL as the return value if the $variable is not set or fails to be filtered.

got it thank you. I think I have write a function or a couple of extra lines to return null for my case. thanks.