完全陷入了困境-PHP的新手,并进行了简单的表单提交(创建帐户页面)以发送到mySQL数据库,因此对问题的宽恕表示歉意。
我不确定在发送数据之前如何正确验证和清除数据。但是我在插入数据库时使用的是PDO和占位符,所以我认为这一方面已经涵盖了。
<form action="createaccount.php" name="form" method="post"> <input type="text" name="createUserName" id="createUserName" placeholder="User Name"><br> <input type="password" name="passWord" id="passWord" placeholder="Password (Min 6 Characters)"><br> <input type="password" name="confirmPW" id="confirmPW" placeholder="Confirm Password"><br> <input type="text" name="fName" id="fName" placeholder="First Name"><br> <input type="text" name="sName" id="sName" placeholder="Surname"><br><br> <input type="email" name="userEmail" id="userEmail" placeholder="Email Address"><br> <input type="submit" value="Create Account"> </form>
这被发送到一个名为createaccount.php的单独的php文件,该文件运行用户名检查,如果成功运行,则将一个字段发送到我的dbHandler类中的insert函数中的函数。
<?php session_start(); include('connect.php'); $username = $_POST['createUserName']; $password = $_POST['passWord']; $password_confirm = $_POST['confirmPW']; $firstname = $_POST['fName']; $surname = $_POST['sName']; $email = $_POST['userEmail']; if ($dbh->checkUserName($username)) { $_SESSION['message'] = "Username is taken, please try again"; header('Location: createAccount.php'); exit(); } else { $dbh->createAccount($username, $password, $password_confirm, $firstname, $surname, $email); header('Location: login.php'); exit(); }; ?>
所以我的问题是。我应该使用
<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>
以我的形式动作吗?如果是这样的话。我需要在createaccount.php上运行此功能,因为我无法将其发送到另一个php文件?
我应该使用filter_var吗?和/或我应该在发送到表单的变量中使用修剪,反斜杠或其他任何内容吗?我该怎么做呢?我的理解是
$name = test_input($_POST['createUserName']); $password = test_input($_POST['passWord']); .. etc function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; }
另外,这是我的插入功能。这是安全的/正确编写的吗?
<?php function createAccount($userName, $pw, $confirmPW, $fName, $sName, $email) { $sql = "INSERT INTO `room_project`.`user` (`userName`, `pass`, `confirmPW`, `fName`, `sName`, `email`) VALUES (?, ?, ?, ?, ?, ?);"; $query = $this->connection->prepare($sql); $query->execute(Array($userName, $pw, $confirmPW, $fName, $sName, $email)); } ?>
我非常感谢任何建议!再次请您原谅这个性质:)
您应该使用PHP正则表达式来严格验证输入数据。
假设您要验证以下输入字段,
那么你会做这样的事情,
if(isset($_POST['submit']) && !empty($_POST['submit'])){ // use a boolean variable to keep track of errors $error = false; // Username validation $username = trim($_POST['username']); $username_pattern = "/^[a-zA-Z0-9]{3,15}$/"; // username should contain only letters and numbers, and length should be between 3 and 15 characters if(preg_match($username_pattern, $username)){ // success }else{ // error $error = true; } // Password validation $password = $_POST['password']; $confirm_password = $_POST['confirm_password']; if(strlen($password) >= 6 && $password===$confirm_password){ // length of the password should be greater than or equal to 6 // success }else{ // error $error = true; } // First name validation $first_name = trim($_POST['first_name']); $first_name_pattern = "/^[a-zA-Z]{2,15}$/"; if(preg_match($first_name_pattern, $first_name)){ // first name should contain only letters and length should be between 2 and 15 characters // success }else{ // error $error = true; } // Last name validation $last_name = trim($_POST['last_name']); $last_name_pattern = "/^[a-zA-Z]{2,15}$/"; if(preg_match($last_name_pattern, $last_name)){ // last name should contain only letters and length should be between 2 and 15 characters // success }else{ // error $error = true; } // Email validation $email = trim() $email_pattern = "/^([a-z0-9\._\+\-]{3,30})@([a-z0-9\-]{2,30})((\.([a-z]{2,20})){1,3})$/"; if(preg_match($email_pattern, $email)){ // validate email addresses // success }else{ // error $error = true; } if(!$error){ // all fields are validated. Now do your database operations. }else{ // display error message } }
并使用PDO准备阻止您的数据库进行任何形式的SQL注入。
从 PDO :: prepare
为将使用不同参数值多次发出的语句调用PDO :: prepare()和PDOStatement :: execute()可通过允许驱动程序协商查询计划的客户端和/或服务器端缓存来优化应用程序的性能,并元信息,并 消除了手动引用参数的需要 ,从而 有助于防止SQL注入攻击。