Why can I not create a directory using php?

I have a form where users can upload an image. I have another page which already works that then creates a directory and places the image in it. For some reason, when I copy that same code to my current page, it gives me the following error:

Warning: mkdir() [function.mkdir]: No such file or directory in /home5/ideapale/public_html/amatorders_final/user_char_upload.php on line 251

Here is the code it is referring to:

if (!file_exists("../upload/" . $order_id . '_' . $row['last_name'])) { //Checks if the directory already exists
    mkdir("../upload/" . $order开发者_Python百科_id . '_' . $row['last_name'], 0755); //Creates a new directory with the order_id and Customer last name
}

I tried echoing out all those variables, so I know they work.

It seems pretty straighforward to me, so i'm not sure why the mkdir function isn't working for me on this page. Any ideas anyone?

---

Using mkdir with two parameters, in order to create the directory a/b/c, the directory a/b must exist.

If you want a/b to be created when you try to create a/b/c, you need to pass true as a third parameter (the one called recursive ;-) ) to mkdir.

If you upload directory already exists, then, you need to make sure that ../upload/ is actually what you think.

This ../upload/ is relative to the current directory of execution (which is not necessarily the same as the one that contains your script !)

You might want to try using this :

var_dump(realpath('../upload/'));

to check if that directory is what you think -- it'll display its full path if it exists ; or false if it doesn't.

---

you are passing wrong path to the function man.

i.e move_upload_file($arg);

If u give wrong path in $arg,it will show the error msg as u said.