Where can one find documentation or resources on using placeholders in PHP prepared statements?

When using prepared statements in PHP, placeholders are used to safely insert variables into SQL queries. To learn more about using placeholders in PHP prepared statements, you can refer to the official PHP documentation on prepared statements or check out tutorials on websites like W3Schools or PHP.net. 

// Example of using placeholders in a PHP prepared statement
$pdo = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$username = 'john_doe';
$stmt->bindParam(':username', $username);
$stmt->execute();
$results = $stmt->fetchAll();

Keywords

PHP prepared statements placeholders documentation resources

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