What are the best practices for using Prepared Statements in PHP to prevent SQL Injections?

Prepared Statements in PHP are a recommended way to prevent SQL Injections by separating SQL query logic from user input. By using placeholders in the query and binding parameters separately, Prepared Statements ensure that user input is treated as data rather than executable SQL code. 

// Establish a database connection
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Prepare a SQL statement with a placeholder for the user input
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");

// Bind the user input to the placeholder
$stmt->bindParam(':username', $_POST['username']);

// Execute the statement
$stmt->execute();

// Fetch the results
$results = $stmt->fetchAll();

Keywords

Prepared Statements SQL Injections PHP Security Escaping

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