How can i get a series of reproducible pseudorandom numbers in PHP?
In older versions of PHP i could do that just by using the same seed in the RNG, but it does not work
One of the best random number algorithms by some metrics is Mersenne Twister. You can find a pure PHP version here (there are others).
You can then call:
init_with_integer($integer_seed)
and get the same output (for a given seed) every time.