科学计算器在线使用工具代码

html5 css3制作在线科学计算器ui布局，3D计算器面板，加减乘除数字计算器工具特效。

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php代码

        
            <title>
                PHP实现简单计算器
            </title>
            <meta>
        
        <?php             if(isset($_GET["sub"])){
                $sum=0;
                $num1=true;
                $num2=true;
                $numa=true;
                $numb=true;
                $message="";
                if($_GET["num1"]==""){
                    $num1=false;
                    $message="第一个参数为空";
                }
                if($_GET["num2"]==""){
                    $num2=false;
                    $message="第二个参数为空";
                }
                if(!is_numeric($_GET["num1"])){
                    $numa=false;
                    $message.="第一个参数不是数字!";
                }
                if(!is_numeric($_GET["num2"])){
                    $numb=false;
                    $message.="第二个参数不是数字!";
                }
                if($num1 && $num2 && $numa){
                    switch($_GET["ysf"]){
                        case "+":$sum=$_GET["num1"]+$_GET["num2"];
                            break;
                        case "-":$sum=$_GET["num1"]-$_GET["num2"];
                            break;
                        case "*":$sum=$_GET["num1"]*$_GET["num2"];
                            break;
                        case "/":$sum=$_GET["num1"]/$_GET["num2"];
                            break;
                        case "%":$sum=$_GET["num1"]%$_GET["num2"];
                            break;
                    }
                }

            }

        ?>
        
            

                                                                                                                                                                                        ';                 }                 ?>                              

计算器

">	>+                                 >-                                 >*                                 >/                                 >%	">
';                     if($num1 && $num2 && $numa&& $numb){                         echo "结果是:".$_GET["num1"]." ".$_GET["ysf"]." ".$_GET["num2"]." = ".$sum;                     }else{                         echo $message;                     }                     echo '