Building Fast, Scalable REST APIs with PHP 8 and PDO

Modern PHP Architecture for APIs

PHP 8+ brings attributes, constructor property promotion, match expressions, and typed properties that make structuring clean REST APIs a joy without framework bloat.

Why Raw PHP + PDO Delivers Exceptional Throughput

By leveraging native PDO with strict error mode and parameterized prepared statements, we achieve optimal query throughput, microsecond response times, and rock-solid SQL injection security.

final class Database {
    private static ?PDO $pdo = null;
    public static function getConnection(): PDO {
        if (self::$pdo === null) {
            self::$pdo = new PDO(DBDSN, DBUSER, DB_PASS, [
                PDO::ATTRERRMODE => PDO::ERRMODEEXCEPTION,
                PDO::ATTRDEFAULTFETCHMODE => PDO::FETCHASSOC
            ]);
        }
        return self::$pdo;
    }
}

Handling JSON API Payloads

Always set the proper Content-Type: application/json header and enforce strict input validation schemas before database execution.