代码块的隐藏

来源：互联网发布：树莓派怎样编程编辑：程序博客网时间：2024/06/05 14:32

方法一·<input type="hidden" name="doing" value="work">

Cat.php

<form action="CatWork.php" method="post">
       <h1>四则运算</h1>
       第一个数：<input type="text" name="num1"><br>
       第二个数：<input type="text" name="num2"><br>
       运算符号：
       <select name="oper">
           <option value="+">+</option>
           <option value="-">-</option>
           <option value=""></option>
           <option value="/">/</option>
       </select><br>
       //隐藏域的使用
       <input type="hidden" name="doing" value="work">
       <input type="submit" value="开始计算">
   </form>
   <br>
   <form action="CatWork.php" method="post">
       <h1>计算圆形面积</h1>
       请输入半径：<input type="text" name="radius"><br>
       <input type="submit" value="开始计算面积">
       //隐藏域的使用
       <input type="hidden" name="doing" value="area">
   </form>
   <form action="CatWork.php" method="post">
   <h1>长方形的面积</h1>
   长：<input type="text" name="length"><br>
   宽：<input type="text" name="width"><br>
   隐藏域的使用
   <input type="hidden" name="doing" value="rectangle"><br>
   <input type="submit" value="开始计算">
   </form>

CatWork.php

<?php

require_once 'CatClass.php';

$doing=$_REQUEST['doing'];

$cat=new Cat();

if($doing=="work"){

$num1=$_REQUEST['num1'];

$num2=$_REQUEST['num2'];

$oper=$_REQUEST['oper'];

echo '计算结果：'.$cat->work($num1,$num2,$oper)."<br>";

}elseif($doing=="area"){

$radius=$_REQUEST['radius'];

echo '计算面积是'.$cat->circleArea($radius);

}elseif($doing=="rectangle"){

$length=$_REQUEST['length'];

$width=$_REQUEST['width'];

//var_dump($length,$width);

echo '长方形的面积是：'.$cat->rectangleArea($length,$width);

}

echo "<br>";

echo "<a href='Cat.php'>返回主页</a>";

?>

CatWork.php

<?php
header("content-type:text/html;charset=utf8");
class Cat{

    $res=0;
   function work($num1,$num2,$oper){
       if($oper=="+"){
           $res=$num1+$num2;
       }elseif($oper=="-"){
           $res=$num1+$num2;
       }elseif($oper==""){
           $res=$num1$num2;
       }elseif($oper=="/"){
           $res=$num1/$num2;
       }
       return $res;
   }
   function circleArea($radius){
       return 3.14$radius$radius;
   }
   function rectangleArea($l,$w){
       return $l*$w;
   }
}
?>

方法二·

<html>
   <head>
   <meta http-equiv="content-type" content="text/html charset=utf-8">
   <script language="javascript">
       function selType(val){
           //window.alert("你选中"+val);
           if(val=="jisuan"){
               table1.style.display="block";
               table2.style.display="none";
           }else if(val=="area"){
               table1.style.display="none";
               table2.style.display="block";
           }
       }
   </script>
   </head>
   <h1>聪明的猫</h1>
   <form action="CatWork.php" method="post">
       <input type="radio" name="sel" onclick="selType('jisuan')">四则运算
       <input type="radio" name="sel" onclick="selType('area')">计算矩形
       <table id="table1" style="display:black">
           <tr><td>第一个数</td><td><input type="text" name="num1"></td></tr>
           <tr><td>第二个数</td><td><input type="text" name="num2"></td></tr>
           <tr><td>运算符号</td>
               <td>
                   <select name="oper">
                   <option value="+">+</option>
                   <option value="-">-</option>
                   <option value=""></option>
                   <option value="/">/</option>
                   </select>
               </td>
           </tr>
           <tr><td colspan="2"><input type="submit" value="四则运算"></td></tr>
       </table>

       <table id="table2" style="display:none">
           <tr><td>长</td><td><input type="text" name="length"></td></tr>
           <tr><td>宽</td><td><input type="text" name="width"></td></tr>
           <tr><td colspan="2"><input type="submit" value="矩形运算"></td></tr>
       </table>
   </form>
</html>

2 0

代码块的隐藏

方法一·<input type="hidden" name="doing" value="work">

Cat.php

CatWork.php

<?php

require_once 'CatClass.php';

$doing=$_REQUEST['doing'];

$cat=new Cat();

if($doing=="work"){

$num1=$_REQUEST['num1'];

$num2=$_REQUEST['num2'];

$oper=$_REQUEST['oper'];

echo '计算结果：'.$cat->work($num1,$num2,$oper)."<br>";

}elseif($doing=="area"){

$radius=$_REQUEST['radius'];

echo '计算面积是'.$cat->circleArea($radius);

}elseif($doing=="rectangle"){

$length=$_REQUEST['length'];

$width=$_REQUEST['width'];

//var_dump($length,$width);

echo '长方形的面积是：'.$cat->rectangleArea($length,$width);

}

echo "<br>";

echo "<a href='Cat.php'>返回主页</a>";

?>

CatWork.php

<?phpheader("content-type:text/html;charset=utf8");class Cat{

方法二·

<?php
header("content-type:text/html;charset=utf8");
class Cat{