[BNM] Advice on Comparing base64 encoded images in PHP please.

[Remy Sharp]

Hi Joe,

Though I don't suspect there's going to be much in it, the md5 option  
should be faster since you're comparing two strings that are 32  
characters wide, whereas a the base64 string could be pretty large  
for bigger images - so you're comparing a whole lot more characters.

Remy Sharp
Left Logic
http://leftlogic.com