Change Case Of File Extension

[Anon]

Hello,

I'm trying to use the following code to change the case of a file extension from JPG to jpg :

<?php

$search = "JPG";
$replace = "jpg";

$dirPath = opendir("images/test/");
while ($file = readdir($dirPath)) {
if ($file != "." && $file != "..") {
echo "$file";
$newfile = preg_replace ($search, $replace, $file);
echo "$newfile";
}
}

?>

When I run it, here is the output :

thm_DCP_2556.JPG
Warning: Delimiter must not be alphanumeric or backslash in rename.php3 on line 10

thm_DCP_2556.JPG is the file that preg_replace is trying to do its job on.

Any idea why this doesn't work? Is there a better way to do this? Thanks!

[Anon]

You could accomplish the same thing with the function

$variable = strtolower("$variable");

I think.

Mark Fleming wrote:

Hello,

I'm trying to use the following code to change the case of a file extension from JPG to jpg :

<?php

$search = "JPG";
$replace = "jpg";

$dirPath = opendir("images/test/");
while ($file = readdir($dirPath)) {
if ($file != "." && $file != "..") {
echo "$file";
$newfile = preg_replace ($search, $replace, $file);
echo "$newfile";
}
}

?>

When I run it, here is the output :

thm_DCP_2556.JPG
Warning: Delimiter must not be alphanumeric or backslash in rename.php3 on line 10

thm_DCP_2556.JPG is the file that preg_replace is trying to do its job on.

Any idea why this doesn't work? Is there a better way to do this? Thanks!

[brandonschnell]

if DCP doesn't need to be in caps, you could run the strtolower function on the entire filename. Next, rename each file to the lower case version of the file name using the rename() function. makes things simple and avoids confusion.

http://www.php.net/manual/en/function.strtolower.php

http://www.php.net/manual/en/function.rename.php

[Anon]

All,

Turns out str_replace() was what I was looking for.

Thanks,

Mark