第78讲面向对象编程综合练习

来源：互联网发布：淘宝网安踏春秋长裤编辑：程序博客网时间：2024/06/07 11:04

<!doctype html><html lang="en"> <head>  <meta charset="UTF-8">  <meta name="Generator" content="EditPlus®">  <meta name="Author" content="">  <meta name="Keywords" content="">  <meta name="Description" content="">  <title>计算器</title> </head> <body>    <form action="test078Result.php" method="post">        <table width="300px" border="0">            <td>第一个数</td> <td><input type="text" name="num1"/></td>            <tr/>            <td>第二个数</td> <td><input type="text" name="num2"/></td>            <tr/>            <td>运算符</td>            <td>            <select name="oper"/>                <option value="+">+</option>                <option value="-">-</option>                <option value="*">*</option>                <option value="/">/</option>            </select>            </td>            <tr>                <td colspan="2"><input type="submit" value="计算结果"/></td>            </tr>        </table>    </form> </body></html>

<?php    $num1=$_REQUEST['num1'];    //2、接收num2    $num2=$_REQUEST['num2'];    //3、接收运算符    $oper=$_REQUEST['oper'];    class OperService{        public $numOne;        public $numTwo;        public $operShow;        public function setData($num1,$num2,$oper){            $this->numOne = $num1;            $this->numTwo = $num2;            $this->operShow = $oper;        }        public function getLastShow(){            $lastShow = 0;            switch($this->operShow){                case "+":                    $lastShow = $this->numOne + $this->numTwo;                    break;                case "-":                    $lastShow = $this->numOne - $this->numTwo;                    break;                case "*":                    $lastShow = $this->numOne * $this->numTwo;                    break;                case "/":                    $lastShow = $this->numOne / $this->numTwo;                    break;            }            return $lastShow;        }    }    $operService = new OperService();    $operService->setData($num1,$num2,$oper);    print $operService->getLastShow();?>

结果：按要求输出。。。。

新版：
在html页面增加数据校验：

<!doctype html><html lang="en"> <head>  <meta charset="UTF-8">  <meta name="Generator" content="EditPlus®">  <meta name="Author" content="">  <meta name="Keywords" content="">  <meta name="Description" content="">  <title>计算器</title>  //增加js数据检验--有这个值不对的话浏览器就有弹窗了    <script type="text/javascript">        function check(){            var num1 = document.getElementById("num1").value;            var num2 = document.getElementById("num2").value;            //window.alert(num1+" "+num2);            if(isNaN(num1)||isNaN(num1)){                window.alert("请确认输入的值是否整数");                return false;            }        }    </script> </head> <body>    <form action="test078Result.php" method="post" onsubmit="return check()">        <table width="300px" border="0">            <td>第一个数</td> <td><input type="text" id="num1" name="num1"/></td>            <tr/>            <td>第二个数</td> <td><input type="text" id="num2" name="num2"/></td>            <tr/>            <td>运算符</td>            <td>            <select name="oper"/>                <option value="+">+</option>                <option value="-">-</option>                <option value="*">*</option>                <option value="/">/</option>            </select>            </td>            <tr>                <td colspan="2"><input type="submit" value="计算结果"/></td>            </tr>        </table>    </form> </body></html>

结果处理界面增加数据接收判断：

<?php    if(isset($_REQUEST['num1'])){        $num1=$_REQUEST['num1'];    }       if(isset($_REQUEST['num2'])){        //2、接收num2        $num2=$_REQUEST['num2'];    }    if(isset($_REQUEST['oper'])){        //3、接收运算符        $oper=$_REQUEST['oper'];    }    class OperService{        public $numOne;        public $numTwo;        public $operShow;        public function setData($num1,$num2,$oper){            $this->numOne = $num1;            $this->numTwo = $num2;            $this->operShow = $oper;        }        public function getLastShow(){            $lastShow = 0;            switch($this->operShow){                case "+":                    $lastShow = $this->numOne + $this->numTwo;                    break;                case "-":                    $lastShow = $this->numOne - $this->numTwo;                    break;                case "*":                    $lastShow = $this->numOne * $this->numTwo;                    break;                case "/":                    $lastShow = $this->numOne / $this->numTwo;                    break;            }            return $lastShow;        }    }    $operService = new OperService();    $operService->setData($num1,$num2,$oper);    print $operService->getLastShow();?>

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第78讲 面向对象编程综合练习

第78讲面向对象编程综合练习