Connection Pool Performance Analysis

Analyze PHP code for connection pool issues and database connection management problems.

Detection Patterns

1. Connection Leaks

// LEAK: Connection not closed in exception path
public function process(): void
{
    $pdo = new PDO($dsn, $user, $pass);
    $this->doWork($pdo);
    $pdo = null; // Only reached if no exception
}

// LEAK: Early return without cleanup
public function getData(): ?array