rename file in php

Question

I want to rename picture filename (without extension) to old.jpg from this code.

I have picture file in parent directory and the path is correctly

$old="picture";
$new="old.jpg";
rename($old , $new);

or this codes

$old="picture";
$new="old.jpg";
rename($old , $new);

$old="../picture";
$new="../old.jpg";
rename($old , $new);

$old="../picture";
$new="old.jpg";
rename($old , $new);

$old="./picture";
$new="./old.jpg";
rename($old , $new);

rename("picture", "old.jpg");

But I get this error:

 Warning: rename(picture,old.jpg) [function.rename]: The system cannot find the file specified. (code: 2) in C:xampphtdocsprjchange.php on line 21

Answer 1

You need to use either absolute or relative path (maybe better in that case). If it's in the parent directory, try this code:

old = '..' . DIRECTORY_SEPARATOR . 'picture';
$new = '..' . DIRECTORY_SEPARATOR . 'old.jpg';
rename($old , $new);