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22天表单验证作业
phpcn_u60427的博客
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1、demo1.php

<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <title>PHP表单验证</title>
</head>
<body>
<form action="check.php" method="post" target="_blank" >
   <fieldset align="center">
       <legend>注册</legend>
       <p><label for="">用户 <input type="text" name="name"></label></p>
       <p><label for="">邮箱 <input type="text" name="email"></label></p>
       <p>性别：
           <label><input type="radio" name="gender" value="male">帅哥</label>
           <label><input type="radio" name="gender" value="female">美女</label>
           <label><input type="radio" name="gender" value="shemale">人妖</label>
       </p>
       <p><label for="">年龄：
               <select name="age" id="">
                   <option value="0">请选择年龄</option>
                   <option value="1">30以内</option>
                   <option value="2">30到60之间</option>
                   <option value="3">60以上</option>
               </select>
           </label>
       </p>
       <p>备注：<textarea name="comments" id="" cols="30" rows="10"></textarea></p>
       
   </fieldset>
   <p align="center"><input type="submit" value="提交"></p>
</form>
</body>
</html>


2、check.php

<?php
   //姓名验证
   $name=isset($_REQUEST['name']) ? $_REQUEST['name'] : null;
   if (empty($name)){
       echo '<script>alert("你没有输入姓名")</script>';
   }else{
       echo '<script>alert("你的用户名是：'.$name.'")</script>';
   }
   //邮箱验证
   $email=isset($_POST['email']) ? $_POST['email'] : null;
   if (empty($email)){
       echo '<script>alert("你没有输入邮箱")</script>';
   }else{
       echo '<script>alert("你输入的邮箱是：'.$email.'")</script>';
   }
   //性别验证
   $gender=isset($_REQUEST['gender']) ? $_REQUEST['gender'] : null;
   switch ($gender){
       case 'male':
           echo '<script>alert("你是帅哥")</script>';
           break;
       case 'female':
           echo '<script>alert("你是美女")</script>';
           break;
       case 'shemale':
           echo '<script>alert("你是人妖")</script>';
           break;
       default :
           echo '<script>alert("请输入性别")</script>';
           break;
   }
   //年龄验证
   $age=isset($_POST['age']) ? $_POST['age'] : null;
   switch ($age){
       case 0:
           echo '<script>alert("你未选择年龄，请选择年龄")</script>';
           break;
       case 1:
           echo '<script>alert("你的年龄在30以内")</script>';
           break;
       case 2:
           echo '<script>alert("你的年龄在30到60之间")</script>';
           break;
       case 3:
           echo '<script>alert("你的年龄在60以上")</script>';
           break;
   }

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