使用php保持随机生成的数值

Question

I am randomly generating numbers between 0 to 999 using shuffle function in php. Is there a way to persist that order of those randomly generated numbers on each page reload

Answer 1

<?php
session_start();

if (!isset($_SESSION['numbers'])) {
  $_SESSION['numbers'] = array(/*numbers here*/);
  shuffle($_SESSION['numbers']);
}

// use $_SESSION['numbers'] 

Answer 2

I think this is what you're after, but I might be wrong here.

You can select the seed value used for random number generation using the srand() function. This is the initial number which is used to generate all other random numbers from successive calls to rand() . This means that if you pick a number (hell, even get one from rand() ) and store it, you can then use srand() to seed the generator and gain the same sequence of values back out from rand() .