//根据ID计算唯一邀请码 public static function createCode($Id){ static $sourceString = [ 0,1,2,3,4,5,6,7,8,9,10, 'a','b','c','d','e','f', 'g','h','i','j','k','l', 'm','n','o','p','q','r', 's','t','u','v','w','x', 'y','z' ]; $num = $Id; $code = ''; while($num)…