使用 PDO 选择登录用户的 ID
我刚开始使用 PDO,想知道如何从我的 phpMyAdmin 数据库中选择登录用户的 ID.
I am new to using PDO and was wondering how I would select the logged in user's id from my phpMyAdmin database.
我的初始化文件是...
My initialization file is...
session_start();
$_SESSION['user_id'] = 1;
$db = new PDO('mysql:host=localhost;dbname=project', 'root', '');
这是我的用户表布局:
推荐答案
我假设您想获取用户信息,其中 id
与 user_id
相同
I'm assuming you want to get the users info where their id
is the same as user_id
你可能会这样做;
$query = $db->prepare('SELECT * FROM table WHERE id=:id');
//using bindParam helps prevent SQL Injection
$query->bindParam(':id', $_SESSION['user_id']);
$query->execute();
//$results is now an associative array with the result
$result = $query->fetch(PDO::FETCH_ASSOC);
我不确定 user_id
是如何设置的,所以我只是使用了 bindParam 以防万一.
I wasn't sure how user_id
is set so I just used bindParam just in case.
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