随机数字API(原理:mt_rand)随机输出范围内的数字
<?php $num=$_GET["num"]; $num2=$_GET["num2"]; if($num==''){ echo "数字不能为空"; }else if($num2==''){ echo "数字不能为空"; }else $randnum = mt_rand($num, $num2); echo "$randnum";