【www.bbyears.com--php常用代码】

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    $num1=true;
    $num2=true;
    $numa=true;
    $numb=true;
    $message="";
    //单路分支
    if(isset($_GET["sub"])){
        if($_GET["num1"]==""){
            $num1=false;
            $message.="第一个数不能为空";

        }
        if(!is_numeric($_GET["num1"])){
            $numa=false;
            $message.="第一个数不是数字";
        }

        if($_GET["num2"]==""){
            $num2=false;
            $message.="第二个数不能为空";

        }
        if(!is_numeric($_GET["num2"])){
            $numb=false;
            $message.="第二个数不是数字";
        }

        if($num1 && $num2 && $numa && $numb) {
            $sum=0;
            //多路分支switch
            switch($_GET["ysf"]){
                case "+":
                    $sum=$_GET["num1"]+$_GET["num2"];
                    break;
                case "-":
                    $sum=$_GET["num1"]-$_GET["num2"];
                    break;
                case "x":
                    $sum=$_GET["num1"]*$_GET["num2"];
                    break;
                case "/":
                    $sum=$_GET["num1"]/$_GET["num2"];
                    break;
                case "%":
                    $sum=$_GET["num1"]%$_GET["num2"];
                    break;
            }
        }
    }
?>

Notice:  Undefined index:  num1 in
D:\php\PHPnow1.5.5\Package\vhosts\127.0.0.1\ceshi\jsq.php
on line 64

   
       
           

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<script>

</script>

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