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01月09日作业:默写php循环语句和表单制作及验证
李东亚¹⁸⁰³⁹⁵⁴⁰¹²⁰
Original
1029 people have browsed it

作业一:php循环语句

1、for(循环变量初始化;循环条件;更新条件) {……}循环实例:

(1)、代码

  1. for ($a=0$a<10 $a++) {
  2. echo $a,'<br>';
  3. }

(2)、效果:

2、while(循环判断条件){……更新条件;……}或者do {……更新条件……}while(循环判断条件);循环实列:
(1)、代码:

  1. $a=0;
  2. while($a<10) {
  3. echo $a,',';
  4. $a++;
  5. }
  6. $a=0;
  7. do {
  8. echo $a,'<br>';
  9. $a++;
  10. } while($a<0);

(2)、效果:

作业二:表单制作及验证

1、表单制作

(1)代码:

  1. <!doctype html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <title>用户注册表单</title>
  6. <style>
  7. .login{
  8. width: 400px;
  9. height: 430px;
  10. background-color: #55a532;
  11. margin:0 auto;
  12. padding: 10px;
  13. font-size: 16px;
  14. color: #fffdef;
  15. border-radius: 20px;
  16. }
  17. .login:hover {
  18. box-shadow: 0 0 3px #333333 ;
  19. }
  20. .login > h3 {
  21. width: 100px;
  22. margin: 20px auto;
  23. color: #222222;
  24. }
  25. .login > form {
  26. display: grid;
  27. grid-template-columns: 70px 1fr;
  28. grid-template-rows:repeat(7,40px) ;
  29. place-items: center;
  30. }
  31. .login > form > input {
  32. width: 200px;
  33. height: 25px;
  34. }
  35. .login > form > input:nth-last-of-type(n+3):hover {
  36. box-shadow: 0 0 3px #df5000 inset;
  37. }
  38. .login > form > label {
  39. width: 80px;
  40. height: 25px;
  41. position: relative;
  42. left:60px;
  43. }
  44. .login > form > input:nth-last-of-type(-n+2) {
  45. margin: 15px 0;
  46. width:100px;
  47. height:35px;
  48. border-style: none;
  49. background-color: #ff0000;
  50. color:#fffdef;
  51. position: relative;
  52. left:66px;
  53. }
  54. .login > form > input:nth-last-of-type(-n+2):hover{
  55. background-color: #178CEE;
  56. }
  57. </style>
  58. </head>
  59. <body>
  60. <div class="login">
  61. <h3>新用户注册</h3>
  62. <form action="login_verify.php" method="post" name="sign-in">
  63. <label for="username"><span>用户名:</span></label>
  64. <input type="text" name="username" id="username" autofocus placeholder="请输入你的账号" required>
  65. <label for="pwd1"><span>密&nbsp;码:</span></label>
  66. <input type="password" name="pwd1" id="pwd1" placeholder="请输入你的密码" required>
  67. <label for="pwd2"><span>密&nbsp;码:</span></label>
  68. <input type="password" name="pwd2" id="pwd2" placeholder="请再次输入你的密码" required>
  69. <label for="email"><span>邮箱</span></label>
  70. <input type="email" name="email" id="email" placeholder="请输入邮箱" required>
  71. <label for="tel"><span>电话</span></label>
  72. <input type="tel" name="tel" id="tel" placeholder="请输入手机号" required>
  73. <label for="gender"><span>性别</span></label>
  74. <div>
  75. <input type="radio" name="gender" value="1" checked>
  76. <input type="radio" name="gender" value="2">
  77. <input type="radio" name="gender" value="0" id="gender" >保密
  78. </div>
  79. <label for="like"><span>兴趣爱好</span></label>
  80. <div>
  81. <input type="checkbox" name="like[]" value="1">html
  82. <input type="checkbox" name="like[]" value="2">css
  83. <input type="checkbox" name="like[]" value="3" checked id="like">php
  84. </div>
  85. <input type="submit" value="注册">
  86. <input type="reset" value="重置">
  87. </form>
  88. </div>
  89. </body>
  90. </html>

2、效果图

3、表单验证

  1. <?php
  2. //echo '用户名:',$_POST['username'],'<br>';
  3. //echo '密码:',$_POST['pwd1'],'<br>';
  4. //echo '密码:',$_POST['pwd2'],'<br>';
  5. //echo '邮箱:',$_POST['email'],'<br>';
  6. //echo '手机:',$_POST['tel'],'<br>';
  7. //echo '性别:',$_POST['gender'],'<br>';
  8. //echo '兴趣爱好'.print_r($_POST["like"],true),'<br>';
  9. //
  10. //echo '<pre>' . print_r($_POST, true) . '</pre>';
  11. //echo '请求判断类型'.$_SERVER['REQUEST_METHOD'].'<br>';
  12. #验证request类型
  13. if ($_SERVER['REQUEST_METHOD']=='POST') {
  14. if (!empty($_POST['username'])) {
  15. echo $_POST['username'];
  16. };
  17. // $_POST['pwd1']==$_POST['pwd2'] ? $pwd=$_POST['pwd1']: print_r('密码不一致');
  18. if (!empty($_POST['username'])) $username=$_POST['username'];
  19. if (!empty($_POST['email'])) $email=$_POST['email'];
  20. if (!empty($_POST['tel'])) $tel=$_POST['tel'];
  21. if (!empty($_POST['gender'])) $gender=$_POST['gender'];
  22. if (!empty($_POST['like'])) $likes=$_POST['like'];
  23. if ( $_POST['pwd1']==$_POST['pwd2']) {
  24. $pwd=$_POST['pwd1'];
  25. } else {
  26. exit('<script>alert("二次密码不一致");history.back();</script>');
  27. }
  28. $users_date=compact('username','pwd','email','tel','gender','likes');
  29. echo '<pre>'.print_r($users_date,true).'</pre>';
  30. echo '<script>alert("注册成功");</script>';
  31. } else {
  32. exit("请求方式不正确");
  33. };

验证效果:


总结:

1、知识点总结:

(1)、字符串操作函数:strlen();mb_strlen();分别计算字符长度和汉字长度;
trim();ltrim();rtrim();剔除字符串,两端、左、右指定字符,默认空格;
(2)、数组:count();计算数组元素个数; key();``、current();获取数组的当前元素的键和值
(3)、随机返回数值:mt_rand();(range();返回数组);
(4)、指针函数:reset();重置指针到数组开始位置
next(); 指针移动到下一个元素,直至移出数组
prev(); 指针移动到上一个元素,直至移出数组
end(); 指针移动到最后一个元素;

2、表单制作总结:

(1)input类型(type):text\tel\email\radio\checkbox\password\file\hidden\submit\reset\button\number\url\color\date\search\等等
(2)input属性:name\value\placeholder\autofocus\required\disabled\readonly
placeholder:输入框提示内容
autofocus:页面加载时自动获得焦点
required:必填\或必选项
(3)、border-radius:2px;设置边框圆角;box-shadow:0 0 3px 3px #ff0000 inset;设置box阴影
(4)、nth-child(n+2);数字表示起始值,n/-n:自动递增,直至表达式表示的数量结束。

3、表单验证:

(1)、超全局:$_POST();``$_GET();``$_REQUEST();
$_SERVER('REQUEST_METHOD');返回值为大写POST或者GET;
(2)、isset();empty();区别:
empty();判断 空字符串, 0, null, false;
isset();检查请求变量是否设置, 并且值不能为NULL,用在设置请求变量默认值;
(3)、分支语句简化:
1、if(条件)语句;
2、三元运算符:(条件)?语句:语句;语句中不能使用echo输出;
(4)、密码加密方式:md5();32位随机字符串;sha1();40位随机字符串;
(5)js:
弹窗函数:<script>alert("二次密码不一致");</script>
返回上页函数:<script>history.back();</script>

Correcting teacher:天蓬老师天蓬老师

Correction status:qualified

Teacher's comments:作业完成的很好, 后面的课程 越来越抽象, 不比前端, 希望你能坚持下去
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