What are some best practices for linking IDs in a PHP news system?

When linking IDs in a PHP news system, it is important to sanitize user input to prevent SQL injection attacks and ensure data integrity. One best practice is to use prepared statements with parameterized queries to securely link IDs in the database. This helps to prevent malicious code injection and ensures that only valid IDs are used for linking purposes. 

// Sample code for linking IDs in a PHP news system using prepared statements

// Assuming $news_id and $category_id are the IDs to be linked

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

// Prepare a SQL statement using prepared statements
$stmt = $pdo->prepare("INSERT INTO news_categories (news_id, category_id) VALUES (:news_id, :category_id)");

// Bind parameters
$stmt->bindParam(':news_id', $news_id, PDO::PARAM_INT);
$stmt->bindParam(':category_id', $category_id, PDO::PARAM_INT);

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

Keywords

SQL injection PDO prepared statements foreign keys normalization

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