1

我正在学习 pdo，我尝试使用 CRUD 方法。我正在尝试使用 pdo 将数据插入数据库，但它没有插入。下面是我的代码

        <?php 
    $username = $_POST['username'];
$password = password_hash($_POST['password'], PASSWORD_BCRYPT ));
try {
    $query = $connect->prepare("INSERT INTO users(username, password) VALUES(?,?)");
        $query->execute(array($username, $password));
        echo "data";
    }
    catch (PDOException $event) {
        echo $event->getMessage();
    }
    ?>

我有这个名为 index.php 的索引文件

<?php 
require_once 'db.php';
session_start();
session_regenerate_id();
?>
<!DOCTYPE html>
<html>
<head>
  <title>Sign-Up/Login Form</title>
</head>
<?php
if ($_SERVER['REQUEST_METHOD'] == '$_POST') {
    if (isset($_POST['login'])) {
        require 'login.php';
    }
    elseif (isset($_POST['register'])) {
        require 'register.php';
    }
}
?>
<body>
    <form action="index.php" method="POST">
        <input type="text" name="username">
        <input type="password" name="password">
        <input type="submit" name="register" value="Submit">
    </form>
</body>
</html>

我的 db.php 看起来像

<?php 
try {
$connect = new PDO('mysql:dbname=pdologin;host=localhost', 'root', '$$$$'); 
$connect->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (Exception $event) {
    $event->getMessage();

}
?>
4

3 回答 3

2

问题是您的代码永远不会到达您的require脚本（login.php或register.php），因为您的条件不正确。

你有：if ($_SERVER['REQUEST_METHOD'] == '$_POST')

它应该是if ($_SERVER['REQUEST_METHOD'] == 'POST')

于 2018-09-02T04:12:46.597 回答
1

在学习或做一些需要连接的小脚本时，你最终会得到类似下面的东西，从长远来看，将这些东西包装在一个函数中或使用一个小的帮助程序或框架可以使这变得有点容易。学习的好主意，但无论你写了多少年，它仍然是乏味的样板。 

<?php
//db settings that are typically in a config somewhere
$db_servername = "localhost";
$db_username = "username for your database";
$db_password = "password for your database";
$db_name = "your_db_name";        

try {
    $connect = new PDO("mysql:host=$db_servername;dbname=$db_name, $db_username, $db_password");
    // set the PDO error mode to exception
    $connect->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    //echo "Connected successfully";
 }catch(PDOException $e){
    //echo "Connection failed: " . $e->getMessage();
 }
 $sth = $connect->prepare("INSERT INTO users(username, password) VALUES(:username,:password)");

 $username = $_POST['username'];
 $password = password_hash($_POST['password'], PASSWORD_BCRYPT );

 $sth->bindValue(':username', $username, PDO::PARAM_STR);
 $sth->bindValue(':password', $password, PDO::PARAM_STR);
 $sth->execute();

例如，我的团队现在只编写数据库绑定代码，例如

<?php
//array of ids to insert
$binds['ids'] = array(1,3,4,5,6,7,9,08098);
//Database class is auto included with every script
$success = Database::query('insert into my_table (id) values(:ids)',$binds);
于 2018-09-02T03:55:17.460 回答
0

先连接

$connect = mysqli_connect("localhost","root","root","my_db");

然后在执行的时候去掉参数

$query->execute();

尝试这个

   <?php 
    $connect = mysqli_connect("localhost","root","root","my_db");
    $username = $_POST['username'];
    $password = password_hash($_POST['password'], PASSWORD_BCRYPT );
    try {
        $query = $connect->prepare("INSERT INTO users(username, password) VALUES('$username', '$password')");
        $query->execute();
    }
    catch (PDOException $e) {
        echo $e->getMessage();
    }
    ?>
于 2018-09-02T03:51:53.550 回答