用php来处理表单2018-04-16
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>用php来处理表单</title> <style type="text/css"> table { background-color: wheat; box-shadow: 3px 3px 3px #888; border-radius: 3%; padding: 15px; margin: 30px auto; } table td { padding: 8px; } table caption { font-size: 1.5em; margin-bottom: 10px; } textarea { resize: none; } form table button { width: 100px; height: 30px; cursor: pointer; border: none; background-color: skyblue; color: white; } form table button:hover { background-color: orangered; color: white; font-size:1.1em; } </style> </head> <body> <form id="register"> <table> <caption>用户注册</caption> <tr> <td><label for="email">邮箱:</label></td> <td><input type="email" name="email" id="email" autofocus=""></td> </tr> <tr> <td><label for="password1">密码:</label></td> <td><input type="password" name="password1" id="password1"></td> </tr> <tr> <td><label for="password2">确认:</label></td> <td><input type="password" name="password2" id="password2"></td> </tr> <tr> <td><label for="secret">性别:</label></td> <td> <!-- 单选与众不同,点击标签会自动选择默认值 --> <input type="radio" name="gender" id="male" value="male" ><label for="male">男</label> <input type="radio" name="gender" id="female" value="female"><label for="female">女</label> <input type="radio" name="gender" id="secret" value="secret" checked="" ><label for="secret">保密</label> </td> </tr> <tr> <td><label for="level">级别</label></td> <td> <select name="level" id="level"> <option value="0">小白</option> <option value="1" selected="">中级</option> <option value="2">大神</option> </select> </td> </tr> <tr> <td><label for="php">语言:</label></td> <td> <!-- 点击标签会把php做为默认项之一选中 --> <input type="checkbox" name="lang[]" id="php" value="php" checked><label for="php">php</label> <input type="checkbox" name="lang[]" id="java" value="java"><label for="java">java</label> <input type="checkbox" name="lang[]" id="python" value="php"><label for="python">python</label> <input type="checkbox" name="lang[]" id="c" value="c"><label for="c">c</label> </td> </tr> <tr> <td valign="middle"><label for="comment">简介:</label></td> <td><textarea name="comment" id="comment" rows="3" cols="30"></textarea></td> </tr> <tr> <td colspan="2" align="center"> <button type="submit" name="submit" id="submit" value="submit">提交</button> </td> </tr> </table> </form> <script type="text/javascript" src="../js/jquery.js"></script> <script type="text/javascript"> //请求邮箱验证 $('#email').blur(function(){ $.post('admin/check.php?check=email', 'email='+$('#email').val(), function(data){ switch(data.status) { case 0: $('td').find('span').remove() $('#email').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); break; case 1: $('td').find('span').remove() $('#email').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); break; case 2: $('td').find('span').remove() $('#email').after('<span>').next().text(data.msg).css('color', 'green') break; } },'json') }) //密码验证 $('#password1').blur(function(){ if ($('#email').val().length == 0) { return false } $.post('admin/check.php?check=password1','password1='+$('#password1').val(),function(data){ if(data.status == 0) { //清空前一次的提示信息 $('td').find('span').remove() //在文本框后面添加信息提示并设置焦点 $('#password1').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); //返回调用者 return false } },'json') //返回数据为json格式 }) //确认密码验证 $('#password2').blur(function(){ //如果邮箱或密码没有输入,则什么都不做,直接返回 if ($('#email').val().length == 0 || $('#password1').val().length == 0) { return false } $.post('admin/check.php?check=password2', { password1: $('#password1').val(), password2: $('#password2').val() }, function(data){ switch(data.status) { case 0: $('td').find('span').remove() $('#password2').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); break; case 1: $('td').find('span').remove() $('#password2').after('<span>').next().text(data.msg).css('color', 'red') //确认密码不对,应该将焦点设置到第一次的密码框内 $('#password1').focus() break; case 2: $('td').find('span').remove() $('#password2').after('<span>').next().text(data.msg).css('color', 'green') break; } },'json') }) //简介验证 $('#comment').blur(function(){ if ($('#email').val().length == 0 || $('#password1').val().length == 0 || $('#password1').val().length == 0) { return false } $.post('admin/check.php?check=comment', 'comment='+$('#comment').val(), function(data){ switch(data.status) { case 0: $('td').find('span').remove() $('#comment').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); break; case 1: $('td').find('span').remove() $('#comment').after('<span>').next().text(data.msg).css('color', 'red').prev().focus(); break; case 2: $('td').find('span').remove() $('#comment').after('<span>').next().text(data.msg).css('color', 'green').prev().focus(); break; } },'json') }) //提交数据 $('#submit').click(function(){ $.post('admin/check.php?check=submit', $('#register').serialize(), function(data){ $('td').find('span').remove() alert(data) },'text') }) </script> </body> </html>
运行实例 »
点击 "运行实例" 按钮查看在线实例
验证的php代码:
实例
<?php // echo '<pre>'; // print_r($_POST); switch ($_GET['check']) { //验证邮箱 case 'email': $email = $_POST['email']; // 设置默认值 if (empty($email)) { exit(json_encode(['status'=>0,'msg'=>'邮箱不能为空'])); } else if (in_array($email, ['admin@php.cn','zhu@php.cn'])){ exit(json_encode(['status'=>1,'msg'=>'邮箱已占用'])); } else { echo json_encode(['status'=>2,'msg'=>'邮箱可用']); } break; //验证密码 case 'password1': $password1 = $_POST['password1']; if (empty($password1)) { exit(json_encode(['status'=>0,'msg'=>'密码不能为空'])); } break; //验证确认密码 case 'password2': $password1 = $_POST['password1']; $password2 = $_POST['password2']; if (empty($password2)) { exit(json_encode(['status'=>0,'msg'=>'确认不能为空'])); } else if ($password1 != $password2){ exit(json_encode(['status'=>1,'msg'=>'二次密码不相等'])); } else { exit(json_encode(['status'=>2,'msg'=>'验证通过'])); } break; //简介验证(仅做非空验证) case 'comment': $comment = $_POST['comment']; if (empty($comment)) { exit(json_encode(['status'=>0,'msg'=>'简介不能为空'])); } else if (mb_strlen(trim($comment)) < 10) { exit(json_encode(['status'=>1,'msg'=>'长度小于10个字符'])); } else { exit(json_encode(['status'=>2,'msg'=>'通过'])); } //提交验证 case 'submit': //因为数据之前已经全部验证,这里直接返回结果即可 exit('恭喜,注册成功'); }
运行实例 »
点击 "运行实例" 按钮查看在线实例