PHP 데이터베이스 연결 모니터링: 연결 사용량 및 성능 추적

sudo apt-get install php-mysqli

sudo apt-get install php-pdo

$mysqli = new mysqli("host", "user", "password", "database");

if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
}

$dsn = 'mysql:host=host;dbname=database';
$user = 'user';
$password = 'password';

try {
    $conn = new PDO($dsn, $user, $password);
} catch (\PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}

$connection_info = mysqli_get_connection_stats($mysqli);

echo "Number of open connections: " . $connection_info['connection_count'] . "\n";

$stats = $conn->query("SHOW VARIABLES LIKE 'Connections'");
echo "Number of open connections: " . $stats->rowCount() . "\n";

$start = microtime(true);
$query = "SELECT * FROM table";
$result = $mysqli->query($query);
$end = microtime(true);
echo "Query execution time: " . ($end - $start) . " seconds\n";

$start = microtime(true);
$statement = $conn->prepare($query);
$statement->execute();
$end = microtime(true);
echo "Query execution time: " . ($end - $start) . " seconds\n";

mysqli_reap_async_connections($mysqli);

// Repeat the reaping every 60 seconds
sleep(60);

$conn->close();

// Repeat the closing every 60 seconds
sleep(60);