header('Content-Type: image/jpeg'); not behaving as I hoped it would.

[nickcherryjiggz]

When I run a script that contains the following code:

 

header('Content-Type: image/jpeg');
readfile("$IMAGES_FILE_PATH/oldman.jpg");

 

I think that my browser should be showing the image that's being referenced (whose contents are, in fact, being read correctly), but instead, it displays the URL of the script that was just run (http://127.0.0.1:8000/Jiggzy%20Quick-Start%20Package/scripts/smartimageresizercustom.php).

 

I'm currently using MAMP (Version 1.7.2 - default installation) and running Leopard (10.5.7) on a MacBook. My PHP information can be found at http://www.jiggzy.com/phpinfo/.

 

Could anyone shed some light on the issue of why DreamHost is displaying the image properly, but not my local version of PHP? Thanks in advance for any help!