[PHP] Getting the compression rate of a jpeg image possible?

Hi there, I am wondering if it is possible to get the compression rate of a jpeg file?! As I did read on php.net creating a jpeg gives you a third parameter with the compression. Default is 75 %. So asuming the user has an image compressed with 50 % and he does upload this picture through my ap

[PHP] Getting the compression rate of a jpeg image

Hi there, I am wondering if it is possible to get the compression rate of a jpeg file?! As I did read on php.net creating a jpeg gives you a third parameter with the compression. Default is 75 %. So asuming the user has an image compressed with 50 % and he does upload this picture through my ap