Question

<input type="hidden" name="com_link" value="?dir=<?php echo 'gallery/'.urldecode($curr_image['dir']); ?>&pic=<?php echo substr(urldecode($curr_image['filename']), 0, -4); ?>">    

substr(urldecode($curr_image['filename']), 0, -4); I want to send filename without .jpg

Answer 1

There are a few methods you could use to get the path without the extension.

One would be to use PHP’s substr() with strrpos():

$image = urldecode($curr_image['filename']);
$name = substr($image, 0, strrpos($image, '.'));

This will get a substring of the $image up to the last ..

Another method, if you know that the extension will always be 4-characters long (including the .), is to just chop off the last 4 characters:

$image = urldecode($curr_image['filename']);
$length = strlen($image);
$name = substr($image, 0, $length - 4);

This last method appears to be what you were trying to do to begin with.