Unable to rename all the files in a folder - php

Question

I've been trying to change the file extension of all the picture files in a folder using the following snippet:
$dh = opendir('JS2C');
$files = array();
while (($file = readdir($dh)) !== false) {
if($file !== '.' && $file !== '..') {
$file = pathinfo($file);
rename($file, $new . '.jpg');
}
}
I get the following warning messages:
SCREAM: Error suppression ignored for
Warning: rename(ANAZODO.gif,ANAZODO.jpg):
The system cannot find the file specified. (code: 2) in C:\wamp2\www\ckcportal\batch2.php on ...
The folder that contains the files is in the same folder with the PHP script.

Answer 1

you are missing directory for rename
$d = 'JS2C/'
$dh = opendir($d);
while (($file = readdir($dh)) !== false) {
if($file !== '.' && $file !== '..') {
//$file_no_ext = substr($file, 0,strrpos($file,'.'));// before php 5.2
$path_parts = pathinfo($file); // php 5.2
$file_no_ext = $path_parts['filename']; // php 5.2
rename($d.$file, $d.$file_no_ext . '.jpg');
}
}

Answer 2

You have to supply the full path, from the error you are receiving, it looks like you are just giving the file name.
rename('/path/to/old/file', '/path/to/new/file');
And why are you using $file = pathinfo($file);? pathinfo creates an assoc. array from information of $file which should be giving you the full path. If you take this out, it should work.
Unless you need to following:
$info = pathinfo($file);
$path = $info['dirname']
$new_file = $path . '/' . 'newfile.ext';
rename($file, $new_file);