【发布时间】：2014-01-13 16:08:24
【问题描述】：
我正在关注 W3schools 的教程，该教程检查表单中的空条目，然后在每个字段旁边显示错误，例如如果用户在每个字段旁边省略了他们的名字和姓氏，则显示“输入您的名字”并显示“输入您的姓氏”。
他们没有解释的是如何将数据写入表中。我知道怎么做，但我不能让它与他们的脚本一起工作。
这是完整的代码。很抱歉造成混乱。
<?php
session_start();
include "connect.php";
error_reporting(E_ERROR);
$fnameErr = $snameErr = $unameErr = $passwordErr = $emailErr = "";
$forename = $surname = $username = $password = $email = "";
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
if (empty($_POST["forename"]))
{$fnameErr = "Enter your forename";}
else
{$forename = validate_input($_POST["forename"]);}
if (empty($_POST["surname"]))
{$snameErr = "Enter your surname";}
else
{$surname = validate_input($_POST["surname"]);}
if (empty($_POST["username"]))
{$unameErr = "Enter a username";}
else
{$username = validate_input($_POST["username"]);}
if (empty($_POST["password"]))
{$passwordErr = "Enter a password";}
else
{$password = validate_input($_POST["password"]);}
if (empty($_POST["email"]))
{$emailErr = "Enter your email address";}
else
{$email = validate_input($_POST["email"]);}
}
function validate_input($data)
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
else {
$Link = mysql_connect($Host, $User, $Password);
$Query = "INSERT INTO $Table_2 VALUES ('0','".mysql_escape_string('forename')."','".mysql_escape_string("surname")."', '".mysql_escape_string("username")."', '".mysql_escape_string("password")."', '".mysql_escape_string("email")."')";
if(mysql_db_query ($DBName, $Query, $Link)){
$message = "You have successfully registered";
header("Location: register.php?message=$message");
}else{
$message = "You've Broke It!";
die(mysql_error());
header("Location: register.php?message=$message");
}
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="styles/all.css" />
<link rel="stylesheet" href="styles/contact.css" />
<script type="text/javascript" src="javascript/jquery-1.7.1.min.js"></script>
<link href='//fonts.googleapis.com/css?family=Ubuntu:400,500' rel='stylesheet' type='text/css'>
<link href='//fonts.googleapis.com/css?family=Voltaire' rel='stylesheet' type='text/css'>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
</head>
<div class="container">
<form action="register.php? method="post" enctype="multipart/form-data">
<fieldset>
<legend><span class="formheading">Registration Form</span></legend>
<div class="form">
<div><p class="formtext">Please enter your forename</p><label for="forename">Forename</label><input id="forename" class="inset" name="forename" type="text">
<?php echo $fnameErr;?>
</div>
<div><p class="formtext">Please enter your surname</p><label for="surname">Surname</label><input id="surname" class="inset" name="surname" type="text">
<?php echo $snameErr;?></div>
<div><p class="formtext">Please enter a username</p><label for="username">Username</label><input id="username" class="inset" name="username" type="text"></div>
<?php echo $usernameErr;?>
<div><p class="formtext">Please enter a password</p><label for="password">Password</label><input id="password" class="inset" name="password" type="text"></div>
<?php echo $passwordErr;?>
<div><p class="formtext">Please enter your e-mail address</p><label for="email">email address</label><input id="email" class="inset" name="email" type="text">
<?php echo $emailErr;?></div>
<div class="submit"><input name="Submit" type="Submit" class="submitbtn" value="Submit" /></div>
<div class="submit"><input name="Reset" type="Reset" class="resetbtn" value="Reset"/></div>
</div>
</fieldset>
</form>
</body>
</html>
我无法使用 aconrad 插入语句插入，但可以使用它。
$Link = mysql_connect($Host, $User, $Password);
$Query = "INSERT INTO $Table_2 VALUES ('0','".mysql_escape_string($forename)."','".mysql_escape_string($surname)."', '".mysql_escape_string($username)."', '".mysql_escape_string($password)."', '".mysql_escape_string($email)."')";
如果我输入：
forename
surname
username
password
但不要在电子邮件字段中输入任何内容，然后单击提交，会显示错误但所有字段都被清除，用户必须重新输入所有信息。如何防止这种情况发生，即如何保留已输入的数据？
【问题讨论】：
-
你能告诉我们你给出了什么错误吗？
-
您忘记定义要插入的列。
-
解析错误：语法错误，第 37 行 register2.php 中的意外 T_ELSE 是：else {
标签： php mysql forms validation