How to replace a file with another file of same name which has new content in PHP?

I am new to PH开发者_JS百科P. In my application user when clicks for PDF, a copy on his name will be stored in a server. Next time, when he wants another PDF of different data, even that also will be stored on the same name in the server. I want to replace the old copy with the new PDF. Please tell me how to solve it. Thank You.

Use copy($source, $dest) and the destination will always be overwritten if it exists.

See: http://www.php.net/manual/en/function.copy.php

Billy Moon's answer will work, but you can also use file_put_contents() and file_get_contents().

Heres how one might do that:

file_put_contents('user_file_new.pdf', file_get_contents('user_file_old.pdf'));