<?php $arr = range(1,8); print_r($arr); echo ‘<br />‘; shuffle($arr); print_r($arr); ?>
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 ) Array ( [0] => 6 [1] => 1 [2] => 3 [3] => 2 [4] => 5 [5] => 7 [6] => 8 [7] => 4 )
原文：https://www.cnblogs.com/pansidong/p/11556041.html