<?php
for($i=0;$i<100;$i++){
$num = rand(1,50);
$info = "";
switch(TRUE){
case $num < 10:
$info = "恭喜你！中了一等奖！";break;
case $num > 10 && $num < 20 :
$info = "恭喜你！中了二等奖！";break;
case $num > 20 && $num <30:
$info = "恭喜你！中了三等奖！";break;
default:$info = "很遗憾！你没有中奖！";}
echo $info;
echo "</br>";}
?>
