A same folder zipped once using phpzip and once using PclZip, the checksums of the 2 files should be differents?

Question

Below is my question :

1. Zip a folder 'F' using phpzip => checksum MD5 of the zip file = X
2. Zip the same folder 'F' using PlcZip => checksum MD5 of the zip file = Y (X # Y)

is this normal ?

Thanks in advance for your reply.

BR

Answer 1

That's normal, even if you use the same Zipping library the hashes may not be always the same if a single bit changed in the zip file due to timestamps or files order the whole hash will be different