~~~ //生成9位随机数 function nonceStr() { static $seed = array(1,2,3,4,5,6,7,8,9); $str = ''; for($i=0;$i<9;$i++) { $rand = rand(0,count($seed)-1); $temp = $seed[$rand]; $str .= $temp; unset($seed[$rand]); $seed = array_values($seed); } return $str; } ~~~