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I dont know PHP but here is the basic mathematical idea

smaller dimension divided by larger dimension = variable
variable multiplied by 60 (largest dimension wanted in pixels) = outputted smaller dimension
outputted larger dimension equals 60

EX
an image 724 width by 528 height

528 / 724 = 0.729
0.729 * 60 = 44

Therefore the larger side (724) will be shown at 60 pixels
and the smaller side (528) will be shown at 44 pixels

Plug these numbers into an <img> html tag and you have a resized image that isnt stretched or distorted.

If someone could put this function into PHP for me I may be able to do the rest myself... MUCH appreciated

see my own little mod in action here

If you'd need such a function just use the php gd lib, netpbm or imagemagick libraries. You don't have to make your own code for that.

Then again, why would you want to resize a 1000x1000 picture to 60x60 and find out it looks like crap because of the proportions.

I use ImageMagick a fair bit. Resizing is quite easy, for example,

$imginfo = exec("/usr/bin/identify $imagename");
$dimensions = explode(" ", $imginfo);
$dimensions = $dimensions[2];
$dimensions = explode("x", $dimensions);
$width = $dimensions[0];
$height = $dimensions[1];
if ($width > 60 || $height > 60) {
  exec("/usr/bin/mogrify -resize 60x60 -quality 80 +profile '*' $imagename");
}

-resize : sets the maximum height or width, preserving the aspect ratio;
-quality : sets the jpeg image quality/compression;
+profile '*' : strips out any header information stored in the image. For example, a photo from a digital camera will contain headers that add about 10kb to the image filesize and will be kept even in a tiny thumbnail if you don't strip them.

Needless to say, you have to adjust for your path to the ImageMagick binaries (/usr/bin in this example).

Maybe there's a simpler way of getting image dimensions with ImageMagick, dunno. I know it's easier with the GD library, but (IMO) ImageMagick produces much better quality results on resizing than GD.