Set your Publisher ID in src/config/ads.ts to display live ads.
Composer, PSR-4 Autoloading & Modern PHP 8 Features
Dependency management, match expressions, enums, and the nullsafe operator
Modern PHP 8 is a fast, typed, enterprise-grade language backed by Composer, the industry-standard package manager, and PSR standards established by the PHP-FIG community.
Modern PHP 8 Language Additions
Composer: Manages third-party packages and generates automated class autoloaders (vendor/autoload.php).
PSR-4: Specifies a standard mapping between class namespaces and directory file structures.
Match expression: A strict, expression-based upgrade to the classic switch statement that returns values directly.
Nullsafe operator (?->): Safely navigates nested object chains without cascading null checks.
<?php
// Modern PHP 8 Enum
enum PaymentStatus: string {
case PENDING = 'pending';
case COMPLETED = 'completed';
case REFUNDED = 'refunded';
case FAILED = 'failed';
}
$status = PaymentStatus::COMPLETED;
// Match expression returns a value directly
$message = match($status) {
PaymentStatus::PENDING => "Payment is awaiting bank clearance.",
PaymentStatus::COMPLETED => "Receipt sent. Thank you for your business!",
PaymentStatus::REFUNDED => "Funds have been returned to original card.",
PaymentStatus::FAILED => "Charge declined. Please update billing method.",
};
// Nullsafe operator: If getProfile() is null, code gracefully returns null
$country = $user?->getProfile()?->getAddress()?->country ?? 'Unknown';
echo "Status: " . $message . " | Region: " . $country;
?>Set your Publisher ID in src/config/ads.ts to display live ads.
Test Yourself With Exercise
Which tool is the universal standard package manager for modern PHP ecosystems?