Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] United Kingdom date formats United States date formats unlink() function unlinking files unserialize() function uploading files moving uploaded files 2nd uploaded file information, retrieving 2nd 3rd urlencode() function URLs preparing strings for use in usernames validating 2nd 3rd usort() function |