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How to Retrieve a Username from a MySQL Database Using PHP Given a User ID?
How to Retrieve a Username from a MySQL Database Using PHP Given a User ID?
Dec 14, 2024 pm 03:44 PM
Retrieving an Unknown Username from an ID Using MySQL and PHP
Given a unique ID, the task is to retrieve the associated username from a database using MySQL and PHP. The username should be stored in the $_SESSION['name'] variable.
Steps to Perform the Query:
-
Create the MySQL Query:
SELECT username FROM user_data WHERE id = ?
where ? is a placeholder for the ID.
-
Prepare the Query:
$stmt = $conn->prepare("SELECT username FROM user_data WHERE> -
Bind the ID Variable:
$stmt->bind_param("s", $id);where s indicates the data type as a string.
-
Execute the Query:
$stmt->execute();
-
Get the Result:
$result = $stmt->get_result();
-
Fetch the Data:
$user = $result->fetch_assoc();
-
Store the Username in the Session Variable:
$_SESSION['name'] = $user['username'];
Example Code:
<?php
$conn = mysqli_connect('localhost', 'root', '', 'user_data');
$id = '10527391670258314752';
$sql = "SELECT username FROM user_data WHERE>The above is the detailed content of How to Retrieve a Username from a MySQL Database Using PHP Given a User ID?. For more information, please follow other related articles on the PHP Chinese website!
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