如何在php中提交多个表单

用户/管理员登录并注册任意数量的学生。单击Finish后，我们需要提供 付款选项选择后，我们需要为所有学生生成注册号，并且所有学生必须在最后选择相同的付款选项

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我的问题是如何保存每个学生的表单值（包含近100个字段），直到他单击finish，以及如何为所有这些学生插入和生成注册号

您可以使用JQUERY就地编辑html，根据需要添加更多字段。对于每个新学员，在字段名中增加一个ID号。在一个表单上提交所有信息，然后解析出结果

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这篇文章讨论了如何使用jquery添加表单字段：

对于管理部分，您可以尝试：

session_start(['username']);

if (isset($_SESSION['username']))
{

$user = $_SESSION['username'];
$connect = mysql_connect("localhost","root","");
mysql_select_db("login");

$POST = mysql_query("SELECT * FROM users WHERE username='$user'");
while ($row = mysql_fetch_assoc($POST))
{
    $admin = $row['account'];
}

if ($admin ==0)
die("You're not an admin <a href='member.php'>Main menu</a>");



}
else
            die("You must be logged in <a href='index.php'>Back</a>");
?>

登记表格：

<?php
  if (isset($_POST['forename'], $_POST['email'], $_POST['surname'], $_POST['password'], $_POST['repassword']))
    {
    $errors = array();
    //form data
    $forename = strip_tags($_POST['forename']);
    $username = strtolower(strip_tags($_POST['username']));
    $surname = strip_tags($_POST['surname']);
    $password = strip_tags($_POST['password']);
    $repassword = strip_tags($_POST['repassword']);
    $email = $_POST['email'];
    //connect to database
    $connect = mysql_connect("localhost","root","");
    mysql_select_db("login");

    $namecheck = mysql_query("SELECT username FROM users WHERE username='$username'");
    $count = mysql_num_rows($namecheck);

    if (empty ($forename) || empty($email)){
    $errors[] ='All fields are required';
    }else{
    if(strlen($forename) >25 || strlen($forename) <3) {
    $errors[] = 'Your forename must be at least three letters long and a maximum of twenty letters';
    }
        if ($count!=0)
        {
    $errors[] = 'Username already taken';
    }
    if(strlen($surname) >25 || strlen($surname) <3) {
    $errors[] = 'Your surname must be at least three letters long and a maximum of twenty letters';
    }
    if(strlen($username) >25 || strlen($username) <3) {
    $errors[] = 'Your username must be at least three letters long and a maximum of twenty letters';
    }
    if(strlen($password) >25 || strlen($password) <3) {
    $errors[] = 'Your password must be at least three letters long and a maximum of twenty letters';
    }
    if(($password) != ($repassword)) {
    $errors[] = 'Your passwords do not match ';
    }
    if (filter_var($email, FILTER_VALIDATE_EMAIL) ===FALSE) {
    $errors[] ='Please enter a valid email';
    }

    }
    if(!empty($errors)){

    foreach ($errors as $errors){
    echo '<strong>',$errors ,'</strong><br />';
    }
    }else{

    $password = md5($password);
    $repassword = md5($repassword);

    $queryreg = mysql_query ("

    INSERT INTO users VALUES ('','$forename','$surname','$email','$password','$username','')
    ");
    header("Refresh: 1; url=index.php");
    die("you have registered <a href=index.php>Login</a>") ;
    }

    }
?>


<form action =""  method="POST">
    <table>
    <tr><td>Forename:</td><td><input type="text" name="forename" value='<?php if (isset($_POST['forename'])) echo $forename; ?>'/></td></tr>
    <tr><td>Surname:</td><td><input type="text" name="surname" value='<?php if (isset($_POST['surname'])) echo $surname; ?>'/></td></tr>
    <tr><td>Username:</td><td><input type='text' name='username' value='<?php if (isset($_POST['username'])) echo $username; ?>'/></td></tr>
    <tr><td>Email:<td><input type ="text" name="email" value='<?php if (isset($_POST['email'])) echo $email; ?>'/><td></tr>
    <tr><td>Password:</td><td><input type='password' name='password'/></td></tr>
    <tr><td>Repeat password:</td><td><input type='password' name='repassword'/></td></tr>
    <tr><td><input type="submit" value="Register"/></td></tr>
    </table>

</form> 

---

感谢您的链接。我的要求与提供的链接类似。但是管理员注册学生和所有学生应在末尾获得个人注册号，并在末尾选择付款选项。您能提供任何示例代码吗？这是一个相当大的项目，我可以马上给你一个注册和登录的示例代码，尽管你需要有人来阻止sql注入<代码>bool session\u start（void）

这是我学习的地方教我们的方式，它根据我们被告知的情况设置会话名称。而不是根据状态

bool session\u start（void）

。Void表示“无/空”。

<?php
  if (isset($_POST['forename'], $_POST['email'], $_POST['surname'], $_POST['password'], $_POST['repassword']))
    {
    $errors = array();
    //form data
    $forename = strip_tags($_POST['forename']);
    $username = strtolower(strip_tags($_POST['username']));
    $surname = strip_tags($_POST['surname']);
    $password = strip_tags($_POST['password']);
    $repassword = strip_tags($_POST['repassword']);
    $email = $_POST['email'];
    //connect to database
    $connect = mysql_connect("localhost","root","");
    mysql_select_db("login");

    $namecheck = mysql_query("SELECT username FROM users WHERE username='$username'");
    $count = mysql_num_rows($namecheck);

    if (empty ($forename) || empty($email)){
    $errors[] ='All fields are required';
    }else{
    if(strlen($forename) >25 || strlen($forename) <3) {
    $errors[] = 'Your forename must be at least three letters long and a maximum of twenty letters';
    }
        if ($count!=0)
        {
    $errors[] = 'Username already taken';
    }
    if(strlen($surname) >25 || strlen($surname) <3) {
    $errors[] = 'Your surname must be at least three letters long and a maximum of twenty letters';
    }
    if(strlen($username) >25 || strlen($username) <3) {
    $errors[] = 'Your username must be at least three letters long and a maximum of twenty letters';
    }
    if(strlen($password) >25 || strlen($password) <3) {
    $errors[] = 'Your password must be at least three letters long and a maximum of twenty letters';
    }
    if(($password) != ($repassword)) {
    $errors[] = 'Your passwords do not match ';
    }
    if (filter_var($email, FILTER_VALIDATE_EMAIL) ===FALSE) {
    $errors[] ='Please enter a valid email';
    }

    }
    if(!empty($errors)){

    foreach ($errors as $errors){
    echo '<strong>',$errors ,'</strong><br />';
    }
    }else{

    $password = md5($password);
    $repassword = md5($repassword);

    $queryreg = mysql_query ("

    INSERT INTO users VALUES ('','$forename','$surname','$email','$password','$username','')
    ");
    header("Refresh: 1; url=index.php");
    die("you have registered <a href=index.php>Login</a>") ;
    }

    }
?>


<form action =""  method="POST">
    <table>
    <tr><td>Forename:</td><td><input type="text" name="forename" value='<?php if (isset($_POST['forename'])) echo $forename; ?>'/></td></tr>
    <tr><td>Surname:</td><td><input type="text" name="surname" value='<?php if (isset($_POST['surname'])) echo $surname; ?>'/></td></tr>
    <tr><td>Username:</td><td><input type='text' name='username' value='<?php if (isset($_POST['username'])) echo $username; ?>'/></td></tr>
    <tr><td>Email:<td><input type ="text" name="email" value='<?php if (isset($_POST['email'])) echo $email; ?>'/><td></tr>
    <tr><td>Password:</td><td><input type='password' name='password'/></td></tr>
    <tr><td>Repeat password:</td><td><input type='password' name='repassword'/></td></tr>
    <tr><td><input type="submit" value="Register"/></td></tr>
    </table>

</form> 

<?php

session_start();

$username = $_POST['username'];
$password = $_POST['password'];
$errors = array();


if ($username&&$password)
{

$connect = mysql_connect("localhost","root","") or die ("Could not connect");
mysql_select_db ("login") or die ("Could not find database");

$query = mysql_query("SELECT * FROM users WHERE username ='$username'");

$numrows = mysql_num_rows($query);
if ($numrows !=0)
{
    while ($row =mysql_fetch_assoc($query))
    {
        $dbusername = $row['username'];
        $dbpassword = $row['password'];
    }

    if ($username==$dbusername&&$password==$dbpassword)
    {
        echo header( 'Location: member.php' ) ;
        $_SESSION['username']=$dbusername;
        $_SESSION['userid']=$userid;
    }
    else 
        //echo "Inncorrect password";
    echo "
            <script type=\"text/javascript\">
              var text = document.createTextNode('Mmm ... something');
                document.getElementById('myBtn').addEventListener('click', textchange1);

            </script>
        ";
     }  

}
else
    die("That user dosen't exist");

}

else
    die("Please enter a username and a password");



if(isset($_POST['btn'])){


?>