Des decryption returns empty

Question

Hi,

I am using Des.php for decryption. For few texts descript function returns Correct output in readable text format. For few... it just returns blank(empty.)

After debugging in Des.php, i found that

function _unpad($text)

is returning false. The input $text is also still encoded.

What could be the reason? Whenever decrypt function calls for _unpad($text) function, i am getting empty as results.

Des.php resource: here