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Home > List of blog posts > php灭绝师太手把手教你注册信息验证
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php灭绝师太手把手教你注册信息验证
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php灭绝师太手把手教你注册信息验证

  1. <?php
  2. //根据需求生成验证码
  3. function getRandomString($len, $chars=null)  
  4. {  
  5.     if (is_null($chars)) {  
  6.         $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";  
  7.     }  
  8.     mt_srand(10000000*(double)microtime());  
  9.     for ($i = 0, $str = '', $lc = strlen($chars)-1; $i < $len; $i++) {  
  10.         $str .= $chars[mt_rand(0, $lc)];  
  11.     }  
  12.     return $str;  
  13. }
  14. //生成验证码
  15. function getRandomString1(){
  16.     $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";  
  17.     for($i = 0;$i < 4;$i++){
  18.         $code .= $chars{mt_rand(0,strlen($chars)-1)};
  19.     }
  20.     return $code;
  21. }
  23. //调用验证码函数生成验证码，赋值到变量以便后面使用
  24. $yanzhengma = getRandomString(6);
  26. ?>
  27. <!DOCTYPE html>
  28. <html lang="en">
  29. <head>
  30.     <meta charset="UTF-8">
  31.     <meta http-equiv="X-UA-Compatible" content="IE=edge">
  32.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  33.     <title>Document</title>
  34.     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
  35.     <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
  36.     <script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>
  37. </head>
  38. <body>
  39.     <div class="container">
  40.         <form action="index2.php"  method="post">
  41.             <div class="form-group">
  42.                 <label for="exampleInputEmail1">邮箱</label>
  43.                 <input type="email" class="form-control" name="exampleInputEmail1" id="exampleInputEmail1" aria-describedby="emailHelp">
  44.                 <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
  45.             </div>
  46.             <div class="form-group">
  47.                 <label for="exampleInputPassword1">密码</label>
  48.                 <input type="password" name="exampleInputPassword1" class="form-control" id="exampleInputPassword1">
  49.             </div>
  50.             <div class="form-group">
  51.                 <label for="exampleInputPassword2">密码</label>
  52.                 <input type="password" name="exampleInputPassword2" class="form-control" id="exampleInputPassword2">
  53.             </div>
  54.             <div class="form-group">
  55.                 <label for="exampleInputyanzhengma">验证码：</label>
  56.                 <?=$yanzhengma?><?=$errorsyzm?>
  57.                 <input type="text" name="exampleInputyanzhengma" class="form-control" id="exampleInputyanzhengma">
  58.                 <input type="hidden" name="hiddenyanzhengma" value="<?=$yanzhengma?>">
  59.             </div>
  60.             <button type="submit" name="tijiao" value="1" class="btn btn-primary">登录</button>
  61.         </form>
  63.     </div>
  64. </body>
  65. </html>
  66. <?php
  68. //获取用户名密码
  69. $email = $_POST["exampleInputEmail1"];
  70. $pwd1 = $_POST["exampleInputPassword1"];
  71. $pwd2 = $_POST["exampleInputPassword2"];
  74. //获取验证码与隐藏验证码，隐藏验证码用于页面提交后（等于刷新了也i按）生成新的验证码，而无法匹配
  75. $yanzheng = $_POST["exampleInputyanzhengma"];
  76. $hiddenyanzhengma = $_POST["hiddenyanzhengma"];
  77. $tijiao = $_POST["tijiao"];
  79. if($tijiao == 1){
  80.     if(strlen($email) > 10) {
  81.         if($pwd1 == $pwd2) {
  82.             if(strlen($pwd2) > 8) {
  83.                 if($yanzheng === $hiddenyanzhengma) {
  84.                     echo '注册成功';
  85.                 }else{
  86.                     echo '<span style="color:red">验证码输入错误</span>';
  87.                 }
  88.             }else{
  89.                 echo '<span style="color:red">密码长度至少为8位</span>';
  90.             }
  91.         }else{
  92.             echo '<span style="color:red">两次输入密码不一致</span>';
  93.         }
  94.     }else{
  95.         echo '<span style="color:red">邮箱长度至少10位</span>';
  96.     }
  97. }
  99. ?>
Correcting teacher：灭绝师太灭绝师太

Correction status：qualified

Teacher's comments：作业写的很好， 验证码的英文是captcha,最好用对应的英文命名变量哈~
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