PHP, the speed of crypto algorithms, which one to choose the fastest?

Question

PHP

searched (maybe badly) but did not find a comparison of crypto algorithms in terms of speed
, the fastest symmetric crypto algorithm is needed,
durability is not important for encoding cookies. From what I found - according to the theory, the fastest is stream encryption.
from practice - open_ssl is faster than mcrypt check on block algorithms.
who will advise?

Answer 1

XOR with one byte: there is no persistence, but the speed is exorbitant.