Do you know why this works :
session_save_path("../../session/my_folder/");
session_start();
and this doesn't :
session_save_path("../../session/".$_POST['my_folder']."/");
session_start();
??
".$_POST['my_folder']." contains the name of "my_folder". so I hope to get a path like "../../session/my_folder/".
In the first case, the session file is registered in "my_folder" and in the second case it is registered in "session" and "my_folder" too!!
The problem : at the begining of the run of my php sheet, the informations are registered in "session", and after they are in "my_folder"!
Thanks for your help!