PHP 无法使用 PDO 将数据插入数据库

Question

我想将用户提供的数据插入到数据库中，当我使用简单的 mysqli 时，它工作得很好，但是当我使用 PDO 时，数据被插入到数据库中。

<?php

$server = 'localhost';
$username = 'root';
$pass = '';
$database = 'db';
try {
    $conn = new PDO("mysql:host=$server;dbname=$database", $username, $pass);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
} catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}
$name = '';
$password = '';
$email = '';
$uid = '';

$sql = "INSERT INTO users(name,email,password,userid) VALUES(?,?,?, ?)";
if (isset($_POST['username'])) {
    $name = $_POST['username'];
    $password = $_POST['password'];
    $email = $_POST['email'];
    $uid = $_POST['uid'];
    $newpass = hash("sha256", $password);
    if ($name != '' && $password != '' && $email != '') {
        $insertUser = $conn->prepare($sql);
        $insertUser->execute($name, $email, $password, $uid);
    }
}

$conn = null;

Answer 1

只需使用参数数组：

    $sql = "INSERT INTO users(name,email,password,userid) VALUES(?, ?, ?, ?)";
    if(isset($_POST['username']))
    {
        $name = $_POST['username'];
        $password = $_POST['password'];
        $email = $_POST['email'];
        $uid = $_POST['uid'];
        $newpass = hash("sha256", $password);
        if($name!='' && $password!='' && $email!='')
        {
            $insertUser = $conn->prepare($sql);
            // use ARRAY instead plain variables
            $insertUser->execute([$name, $email, $password,  $uid]);
        }
    }

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PHP 无法使用 PDO 将数据插入数据库

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