diff --git a/adminer/drivers/mssql.inc.php b/adminer/drivers/mssql.inc.php
index 8833583c..c83c2ed8 100644
--- a/adminer/drivers/mssql.inc.php
+++ b/adminer/drivers/mssql.inc.php
@@ -7,7 +7,7 @@
 
 namespace Adminer;
 
-$drivers["mssql"] = "MS SQL";
+add_driver("mssql", "MS SQL");
 
 if (isset($_GET["mssql"])) {
 	define('Adminer\DRIVER', "mssql");
diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index c6545d9e..726814f0 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -1,7 +1,7 @@
 <?php
 namespace Adminer;
 
-$drivers = array("server" => "MySQL / MariaDB") + $drivers;
+SqlDriver::$drivers = array("server" => "MySQL / MariaDB") + SqlDriver::$drivers;
 
 if (!defined('Adminer\DRIVER')) {
 	define('Adminer\DRIVER', "server"); // server - backwards compatibility
@@ -366,7 +366,6 @@ if (!defined('Adminer\DRIVER')) {
 	* @return string|Db string for error
 	*/
 	function connect(array $credentials) {
-		global $drivers;
 		$connection = new Db;
 		$error = $connection->attach($credentials[0], $credentials[1], $credentials[2]);
 		if ($error) {
@@ -378,7 +377,7 @@ if (!defined('Adminer\DRIVER')) {
 		$connection->set_charset(charset($connection));
 		$connection->query("SET sql_quote_show_create = 1, autocommit = 1");
 		$connection->flavor = (preg_match('~MariaDB~', $connection->server_info) ? 'maria' : 'mysql');
-		$drivers[DRIVER] = ($connection->flavor == 'maria' ? "MariaDB" : "MySQL");
+		add_driver(DRIVER, ($connection->flavor == 'maria' ? "MariaDB" : "MySQL"));
 		return $connection;
 	}
 
diff --git a/adminer/drivers/oracle.inc.php b/adminer/drivers/oracle.inc.php
index 35841bfc..ccc413d9 100644
--- a/adminer/drivers/oracle.inc.php
+++ b/adminer/drivers/oracle.inc.php
@@ -1,7 +1,7 @@
 <?php
 namespace Adminer;
 
-$drivers["oracle"] = "Oracle (beta)";
+add_driver("oracle", "Oracle (beta)");
 
 if (isset($_GET["oracle"])) {
 	define('Adminer\DRIVER', "oracle");
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 03583da9..5c4e7f82 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -1,7 +1,7 @@
 <?php
 namespace Adminer;
 
-$drivers["pgsql"] = "PostgreSQL";
+add_driver("pgsql", "PostgreSQL");
 
 if (isset($_GET["pgsql"])) {
 	define('Adminer\DRIVER', "pgsql");
@@ -301,7 +301,6 @@ if (isset($_GET["pgsql"])) {
 	}
 
 	function connect($credentials) {
-		global $drivers;
 		$connection = new Db;
 		$error = $connection->attach($credentials[0], $credentials[1], $credentials[2]);
 		if ($error) {
@@ -314,7 +313,7 @@ if (isset($_GET["pgsql"])) {
 		$connection->flavor = (preg_match('~CockroachDB~', $version) ? 'cockroach' : '');
 		$connection->server_info = preg_replace('~^\D*([\d.]+[-\w]*).*~', '\1', $version);
 		if ($connection->flavor == 'cockroach') { // we don't use "PostgreSQL / CockroachDB" by default because it's too long
-			$drivers[DRIVER] = "CockroachDB";
+			add_driver(DRIVER, "CockroachDB");
 		}
 		return $connection;
 	}
diff --git a/adminer/drivers/sqlite.inc.php b/adminer/drivers/sqlite.inc.php
index 67bbfb20..e4f7324b 100644
--- a/adminer/drivers/sqlite.inc.php
+++ b/adminer/drivers/sqlite.inc.php
@@ -1,7 +1,7 @@
 <?php
 namespace Adminer;
 
-$drivers["sqlite"] = "SQLite";
+add_driver("sqlite", "SQLite");
 
 if (isset($_GET["sqlite"])) {
 	define('Adminer\DRIVER', "sqlite");
diff --git a/adminer/dump.inc.php b/adminer/dump.inc.php
index dc9eae27..6d472e64 100644
--- a/adminer/dump.inc.php
+++ b/adminer/dump.inc.php
@@ -16,7 +16,7 @@ if ($_POST && !$error) {
 	$is_sql = preg_match('~sql~', $_POST["format"]);
 
 	if ($is_sql) {
-		echo "-- Adminer " . VERSION . " " . $drivers[DRIVER] . " " . str_replace("\n", " ", $connection->server_info) . " dump\n\n";
+		echo "-- Adminer " . VERSION . " " . get_driver(DRIVER) . " " . str_replace("\n", " ", $connection->server_info) . " dump\n\n";
 		if (JUSH == "sql") {
 			echo "SET NAMES utf8;
 SET time_zone = '+00:00';
diff --git a/adminer/include/adminer.inc.php b/adminer/include/adminer.inc.php
index 77083bda..b85c0978 100644
--- a/adminer/include/adminer.inc.php
+++ b/adminer/include/adminer.inc.php
@@ -118,10 +118,10 @@ class Adminer {
 
 	/** Print login form */
 	function loginForm(): void {
-		global $drivers, $adminer;
+		global $adminer;
 		echo "<table class='layout'>\n";
 		// this is matched by compile.php
-		echo $adminer->loginFormField('driver', '<tr><th>' . lang('System') . '<td>', html_select("auth[driver]", $drivers, DRIVER, "loginDriver(this);"));
+		echo $adminer->loginFormField('driver', '<tr><th>' . lang('System') . '<td>', html_select("auth[driver]", SqlDriver::$drivers, DRIVER, "loginDriver(this);"));
 		echo $adminer->loginFormField('server', '<tr><th>' . lang('Server') . '<td>', '<input name="auth[server]" value="' . h(SERVER) . '" title="hostname[:port]" placeholder="localhost" autocapitalize="off">');
 		// this is matched by compile.php
 		echo $adminer->loginFormField('username', '<tr><th>' . lang('Username') . '<td>', '<input name="auth[username]" id="username" autofocus value="' . h($_GET["username"]) . '" autocomplete="username" autocapitalize="off">' . script("qs('#username').form['auth[driver]'].onchange();"));
@@ -946,7 +946,7 @@ class Adminer {
 	* @param string $missing can be "auth" if there is no database connection, "db" if there is no database selected, "ns" with invalid schema
 	*/
 	function navigation(string $missing): void {
-		global $drivers, $connection, $adminer;
+		global $connection, $adminer;
 		echo "<h1>" . $adminer->name() . " <span class='version'>" . VERSION;
 		$new_version = $_COOKIE["adminer_version"];
 		echo " <a href='https://www.adminer.org/#download'" . target_blank() . " id='version'>" . (version_compare(VERSION, $new_version) < 0 ? h($new_version) : "") . "</a>";
@@ -957,7 +957,7 @@ class Adminer {
 			$output = "";
 			foreach ((array) $_SESSION["pwds"] as $vendor => $servers) {
 				foreach ($servers as $server => $usernames) {
-					$name = h(get_setting("vendor-$vendor-$server") ?: $drivers[$vendor]);
+					$name = h(get_setting("vendor-$vendor-$server") ?: get_driver($vendor));
 					foreach ($usernames as $username => $password) {
 						if ($password !== null) {
 							$dbs = $_SESSION["db"][$vendor][$server][$username];
diff --git a/adminer/include/auth.inc.php b/adminer/include/auth.inc.php
index 3db0f94c..7f9c56ca 100644
--- a/adminer/include/auth.inc.php
+++ b/adminer/include/auth.inc.php
@@ -182,7 +182,7 @@ if (isset($_GET["username"]) && is_string(get_password())) {
 	if (is_object($connection)) {
 		$driver = new Driver($connection);
 		if ($connection->flavor) {
-			save_settings(array("vendor-" . DRIVER . "-" . SERVER => $drivers[DRIVER]));
+			save_settings(array("vendor-" . DRIVER . "-" . SERVER => get_driver(DRIVER)));
 		}
 	}
 }
diff --git a/adminer/include/bootstrap.inc.php b/adminer/include/bootstrap.inc.php
index eee7e8fd..3ab140c0 100644
--- a/adminer/include/bootstrap.inc.php
+++ b/adminer/include/bootstrap.inc.php
@@ -39,7 +39,7 @@ if ($_GET["script"] == "version") {
 	exit;
 }
 
-global $adminer, $connection, $driver, $drivers, $translations; // allows including Adminer inside a function
+global $adminer, $connection, $driver, $translations; // allows including Adminer inside a function
 
 if (!$_SERVER["REQUEST_URI"]) { // IIS 5 compatibility
 	$_SERVER["REQUEST_URI"] = $_SERVER["ORIG_PATH_INFO"];
diff --git a/adminer/include/connect.inc.php b/adminer/include/connect.inc.php
index 7fd52fe0..cf1cd61a 100644
--- a/adminer/include/connect.inc.php
+++ b/adminer/include/connect.inc.php
@@ -42,7 +42,7 @@ if (
 				echo "<a href='" . h(ME) . "$key='>$val</a>\n";
 			}
 		}
-		echo "<p>" . lang('%s version: %s through PHP extension %s', $drivers[DRIVER], "<b>" . h($connection->server_info) . "</b>", "<b>$connection->extension</b>") . "\n";
+		echo "<p>" . lang('%s version: %s through PHP extension %s', get_driver(DRIVER), "<b>" . h($connection->server_info) . "</b>", "<b>$connection->extension</b>") . "\n";
 		echo "<p>" . lang('Logged as: %s', "<b>" . h(logged_user()) . "</b>") . "\n";
 		if (isset($adminer->plugins) && is_array($adminer->plugins)) {
 			echo "<p>" . lang('Loaded plugins') . ":\n<ul>\n";
diff --git a/adminer/include/design.inc.php b/adminer/include/design.inc.php
index 8df77265..ad28e373 100644
--- a/adminer/include/design.inc.php
+++ b/adminer/include/design.inc.php
@@ -7,7 +7,7 @@ namespace Adminer;
 * @param string $title2 used after colon in title and heading, should be HTML escaped
 */
 function page_header(string $title, string $error = "", $breadcrumb = array(), string $title2 = ""): void {
-	global $adminer, $drivers;
+	global $adminer;
 	page_headers();
 	if (is_ajax() && $error) {
 		page_messages($error);
@@ -88,7 +88,7 @@ const thousandsSeparator = '" . js_escape(lang(',')) . "';")
 	echo "<div id='content'>\n";
 	if ($breadcrumb !== null) {
 		$link = substr(preg_replace('~\b(username|db|ns)=[^&]*&~', '', ME), 0, -1);
-		echo '<p id="breadcrumb"><a href="' . h($link ?: ".") . '">' . $drivers[DRIVER] . '</a> » ';
+		echo '<p id="breadcrumb"><a href="' . h($link ?: ".") . '">' . get_driver(DRIVER) . '</a> » ';
 		$link = substr(preg_replace('~\b(db|ns)=[^&]*&~', '', ME), 0, -1);
 		$server = $adminer->serverName(SERVER);
 		$server = ($server != "" ? $server : lang('Server'));
diff --git a/adminer/include/driver.inc.php b/adminer/include/driver.inc.php
index 723cf705..d98c6794 100644
--- a/adminer/include/driver.inc.php
+++ b/adminer/include/driver.inc.php
@@ -1,21 +1,18 @@
 <?php
 namespace Adminer;
 
-$drivers = array();
-
-/** Add a driver */
+/** Add or overwrite a driver */
 function add_driver(string $id, string $name): void {
-	global $drivers;
-	$drivers[$id] = $name;
+	SqlDriver::$drivers[$id] = $name;
 }
 
 /** Get driver name */
 function get_driver(string $id): string {
-	global $drivers;
-	return $drivers[$id];
+	return SqlDriver::$drivers[$id];
 }
 
 abstract class SqlDriver {
+	/** @var string[] */ static array $drivers = array();
 	/** @var list<string> */ static array $extensions = array(); // possible extensions
 	static string $jush; // JUSH identifier
 
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index bfe548f2..0fa8ef73 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -391,8 +391,7 @@ function set_session(string $key, $val) {
 
 /** Get authenticated URL */
 function auth_url(string $vendor, ?string $server, string $username, string $db = null): string {
-	global $drivers;
-	$uri = remove_from_uri(implode("|", array_keys($drivers))
+	$uri = remove_from_uri(implode("|", array_keys(SqlDriver::$drivers))
 		. "|username|ext|"
 		. ($db !== null ? "db|" : "")
 		. ($vendor == 'mssql' || $vendor == 'pgsql' ? "" : "ns|") // we don't have access to support() here
diff --git a/compile.php b/compile.php
index c8d27602..56894d4b 100755
--- a/compile.php
+++ b/compile.php
@@ -320,8 +320,8 @@ if ($vendor) {
 			$file = preg_replace("((\t*)" . preg_quote('if (support("' . $feature . '")') . ".*?\n\\1\\}( else)?)s", '', $file);
 		}
 	}
-	if ($project != "editor" && count($drivers) == 1) {
-		$file = str_replace('html_select("auth[driver]", $drivers, DRIVER, "loginDriver(this);")', 'input_hidden("auth[driver]", "' . ($vendor == "mysql" ? "server" : $vendor) . '") . "' . reset($drivers) . '"', $file, $count);
+	if ($project != "editor" && count(Adminer\SqlDriver::$drivers) == 1) {
+		$file = str_replace('html_select("auth[driver]", SqlDriver::$drivers, DRIVER, "loginDriver(this);")', 'input_hidden("auth[driver]", "' . ($vendor == "mysql" ? "server" : $vendor) . '") . "' . reset(Adminer\SqlDriver::$drivers) . '"', $file, $count);
 		if (!$count) {
 			echo "auth[driver] form field not found\n";
 		}
diff --git a/editor/index.php b/editor/index.php
index 4cd8c343..05aed6ba 100644
--- a/editor/index.php
+++ b/editor/index.php
@@ -10,7 +10,7 @@
 namespace Adminer;
 
 include "../adminer/include/bootstrap.inc.php";
-$drivers[DRIVER] = lang('Login');
+add_driver(DRIVER, lang('Login'));
 
 if (isset($_GET["select"]) && ($_POST["edit"] || $_POST["clone"]) && !$_POST["save"]) {
 	$_GET["edit"] = $_GET["select"];
diff --git a/phpstan.neon b/phpstan.neon
index d0fa8d8e..5b3051a4 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -12,7 +12,7 @@ parameters:
 		- identifier: includeOnce.fileNotFound # ./adminer-plugins.php
 		- "~^Function (set_magic_quotes_runtime|mysql_)~" # PHP < 7 functions
 		- "~an unknown class OCI-?Lob~" # this looks like PHPStan bug
-		- "~^Variable \\$(adminer|connection|driver|drivers|error|translations) might not be defined~" # declared in bootstrap.inc.php
+		- "~^Variable \\$(adminer|connection|driver|error|translations) might not be defined~" # declared in bootstrap.inc.php
 		- "~^Constant LANG not found~" # defined in lang.inc.php
 		- "~expects int, float given~" # this will work
 		- "~expects bool~" # truthy values