file rename while uploading

Question

I have a problem here im trying to upload a file

first time it is moving the filename from temp it its respective directory,

but again i try ot upload the a

Answer 1

See comments in code.

$place_file = "$path/$upload_to/$file_name";     

if (!file_exists($place_file)) {
    move_uploaded_file($tmp, $place_file);  
} else {
    // first rename
    $pathinfo = pathinfo($place_file);
    $todays_date = date("mdYHis");
    $new_filename = $pathinfo['dirname'].DIRECTORY_SEPARATOR.$todays_date.'_'.$pathinfo['basename'];
    rename($place_file, $new_filename)
    // and then move, not vice versa
    move_uploaded_file($tmp, $place_file); 
} 

DIRECTORY_SEPARATOR is php constant. Value is '/' or '\', depending of operation system.

pathinfo() is php function, that return information about path: dirname, basename, extension, filename.