[PHP]ImageCreate() PHP returning Errors

[chilifrei64]

I have downloaded a simple php code for an online photo album. This script has everything I need except the autocreation of thumbnails. The author appears to have attempted to include support for this but has commented out the lines and when uncommented.. it still doesnt work

I am mildly familiar with php.. normally getting code and modifying it to fit my needs but I am by no means a programmer.

The he has commented out is as follows

// THUMBNAIL DOESN'T EXIST - LET'S CREATE ONE! (Fun, Eh?)
			// $new_w=100; 
			// $new_h=100; 
			// header("Content-type: image/gif"); 
			// $dst_img=ImageCreate($new_w,$new_h); 
			// $src_img=ImageCreateFromGif("./imgtest.gif"); 
			// ImageCopyResized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,ImageSX($src_img),ImageSY($src_img)); 
			// ImageGif($dst_img);

I am using jpg instead of gif's so I attempted to modify the code for jpg but am unsuccessful. I keep ending up with gibberish

here is my code

//THUMBNAIL DOESN'T EXIST - LET'S CREATE ONE! (Fun, Eh?)
			 $new_w=100; 
			 $new_h=100; 
			 header("Content-type: image/jpeg"); 
			 $dst_img=ImageCreateTrueColor($new_w,$new_h); 
			 $src_img=ImageCreateFromJpeg("$photoDir/&photoFile"); 
			 ImageCopyResized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,ImageSX($src_img),ImageSY($src_img)); 
			 ImageJpeg($dst_img,'',100);

here is the url to the full code

http://www.ravis.org/code/album/

I have been messing with this for hours and I continually end up with this http://danfrei.com/beta/photoalbum/1/index...hotoDir=kitten/

anybody with any ideas?