Just a short comment to the note of arnar at hm dot is: md5() is a hash function and therefore it may happen (although it is very unlikely) that the md5() checksums of two different strings will be equal (hash collision) ...
Just a short comment to the note of arnar at hm dot is: md5() is a hash function and therefore it may happen (although it is very unlikely) that the md5() checksums of two different strings will be equal (hash collision) ...