query("SHOW COLUMNS FROM game_resources LIKE 'show_in_header'")->fetchAll(); if (empty($columns)) { $db->exec("ALTER TABLE game_resources ADD COLUMN show_in_header TINYINT(1) DEFAULT 0"); echo "Column 'show_in_header' added successfully to 'game_resources'.\n"; } else { echo "Column 'show_in_header' already exists.\n"; } } catch (PDOException $e) { echo "Error: " . $e->getMessage() . "\n"; }