In the context of setting up a library system for a kindergarten, what best practices should be followed in terms of PHP version compatibility and database management?

Issue: When setting up a library system for a kindergarten, it is important to ensure compatibility with the latest PHP version and implement proper database management practices to ensure data integrity and security. PHP Code Snippet: 

// Ensure compatibility with the latest PHP version
// Use PHP 7.4 or higher for improved performance and security

// Database management practices
// Use PDO (PHP Data Objects) for secure database connections

try {
    $pdo = new PDO('mysql:host=localhost;dbname=library_db', 'username', 'password');
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}

Keywords

PHP version compatibility database management kindergarten library system database optimization PHP functions

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