diff --git a/adminer/db.inc.php b/adminer/db.inc.php
index 563b71f5..d969733f 100644
--- a/adminer/db.inc.php
+++ b/adminer/db.inc.php
@@ -123,7 +123,7 @@ if ($adminer->homepage()) {
 			}
 
 			echo "<tr><td><th>" . lang('%d in total', count($tables_list));
-			echo "<td>" . h(JUSH == "sql" ? $connection->result("SELECT @@default_storage_engine") : "");
+			echo "<td>" . h(JUSH == "sql" ? get_val("SELECT @@default_storage_engine") : "");
 			echo "<td>" . h(db_collation(DB, collations()));
 			foreach (array("Data_length", "Index_length", "Data_free") as $key) {
 				echo "<td align='right' id='sum-$key'>";
@@ -232,7 +232,7 @@ if ($adminer->homepage()) {
 					echo '<td><a href="' . h(ME) . 'event=' . urlencode($row["Name"]) . '">' . lang('Alter') . '</a>';
 				}
 				echo "</table>\n";
-				$event_scheduler = $connection->result("SELECT @@event_scheduler");
+				$event_scheduler = get_val("SELECT @@event_scheduler");
 				if ($event_scheduler && $event_scheduler != "ON") {
 					echo "<p class='error'><code class='jush-sqlset'>event_scheduler</code>: " . h($event_scheduler) . "\n";
 				}
diff --git a/adminer/drivers/mssql.inc.php b/adminer/drivers/mssql.inc.php
index 6c97323a..34df787c 100644
--- a/adminer/drivers/mssql.inc.php
+++ b/adminer/drivers/mssql.inc.php
@@ -304,8 +304,7 @@ if (isset($_GET["mssql"])) {
 	}
 
 	function db_collation($db, $collations) {
-		global $connection;
-		return $connection->result("SELECT collation_name FROM sys.databases WHERE name = " . q($db));
+		return get_val("SELECT collation_name FROM sys.databases WHERE name = " . q($db));
 	}
 
 	function engines() {
@@ -313,8 +312,7 @@ if (isset($_GET["mssql"])) {
 	}
 
 	function logged_user() {
-		global $connection;
-		return $connection->result("SELECT SUSER_NAME()");
+		return get_val("SELECT SUSER_NAME()");
 	}
 
 	function tables_list() {
@@ -326,7 +324,7 @@ if (isset($_GET["mssql"])) {
 		$return = array();
 		foreach ($databases as $db) {
 			$connection->select_db($db);
-			$return[$db] = $connection->result("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES");
+			$return[$db] = get_val("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES");
 		}
 		return $return;
 	}
@@ -355,10 +353,9 @@ WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V')
 	}
 
 	function fields($table) {
-		global $connection;
 		$comments = get_key_vals("SELECT objname, cast(value as varchar(max)) FROM fn_listextendedproperty('MS_DESCRIPTION', 'schema', " . q(get_schema()) . ", 'table', " . q($table) . ", 'column', NULL)");
 		$return = array();
-		$table_id = $connection->result("SELECT object_id FROM sys.all_objects WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V') AND name = " . q($table));
+		$table_id = get_val("SELECT object_id FROM sys.all_objects WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V') AND name = " . q($table));
 		foreach (
 			get_rows("SELECT c.max_length, c.precision, c.scale, c.name, c.is_nullable, c.is_identity, c.collation_name, t.name type, CAST(d.definition as text) [default], d.name default_constraint, i.is_primary_key
 FROM sys.all_columns c
@@ -415,8 +412,7 @@ WHERE OBJECT_NAME(i.object_id) = " . q($table), $connection2) as $row
 	}
 
 	function view($name) {
-		global $connection;
-		return array("select" => preg_replace('~^(?:[^[]|\[[^]]*])*\s+AS\s+~isU', '', $connection->result("SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = SCHEMA_NAME() AND TABLE_NAME = " . q($name))));
+		return array("select" => preg_replace('~^(?:[^[]|\[[^]]*])*\s+AS\s+~isU', '', get_val("SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = SCHEMA_NAME() AND TABLE_NAME = " . q($name))));
 	}
 
 	function collations() {
@@ -541,8 +537,7 @@ WHERE OBJECT_NAME(i.object_id) = " . q($table), $connection2) as $row
 	}
 
 	function last_id() {
-		global $connection;
-		return $connection->result("SELECT SCOPE_IDENTITY()"); // @@IDENTITY can return trigger INSERT
+		return get_val("SELECT SCOPE_IDENTITY()"); // @@IDENTITY can return trigger INSERT
 	}
 
 	function explain($connection, $query) {
@@ -635,11 +630,10 @@ WHERE sys1.xtype = 'TR' AND sys2.name = " . q($table)) as $row
 	}
 
 	function get_schema() {
-		global $connection;
 		if ($_GET["ns"] != "") {
 			return $_GET["ns"];
 		}
-		return $connection->result("SELECT SCHEMA_NAME()");
+		return get_val("SELECT SCHEMA_NAME()");
 	}
 
 	function set_schema($schema) {
diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index 64142e1d..4a1e71e9 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -484,9 +484,8 @@ if (!defined('Adminer\DRIVER')) {
 	* @return string
 	*/
 	function db_collation($db, $collations) {
-		global $connection;
 		$return = null;
-		$create = $connection->result("SHOW CREATE DATABASE " . idf_escape($db), 1);
+		$create = get_val("SHOW CREATE DATABASE " . idf_escape($db), 1);
 		if (preg_match('~ COLLATE ([^ ]+)~', $create, $match)) {
 			$return = $match[1];
 		} elseif (preg_match('~ CHARACTER SET ([^ ]+)~', $create, $match)) {
@@ -513,8 +512,7 @@ if (!defined('Adminer\DRIVER')) {
 	* @return string
 	*/
 	function logged_user() {
-		global $connection;
-		return $connection->result("SELECT USER()");
+		return get_val("SELECT USER()");
 	}
 
 	/** Get tables list
@@ -646,10 +644,10 @@ if (!defined('Adminer\DRIVER')) {
 	* @return array [$name => ["db" => , "ns" => , "table" => , "source" => [], "target" => [], "on_delete" => , "on_update" => ]]
 	*/
 	function foreign_keys($table) {
-		global $connection, $driver;
+		global $driver;
 		static $pattern = '(?:`(?:[^`]|``)+`|"(?:[^"]|"")+")';
 		$return = array();
-		$create_table = $connection->result("SHOW CREATE TABLE " . table($table), 1);
+		$create_table = get_val("SHOW CREATE TABLE " . table($table), 1);
 		if ($create_table) {
 			preg_match_all("~CONSTRAINT ($pattern) FOREIGN KEY ?\\(((?:$pattern,? ?)+)\\) REFERENCES ($pattern)(?:\\.($pattern))? \\(((?:$pattern,? ?)+)\\)(?: ON DELETE ($driver->onActions))?(?: ON UPDATE ($driver->onActions))?~", $create_table, $matches, PREG_SET_ORDER);
 			foreach ($matches as $match) {
@@ -673,8 +671,7 @@ if (!defined('Adminer\DRIVER')) {
 	* @return array ["select" => ]
 	*/
 	function view($name) {
-		global $connection;
-		return array("select" => preg_replace('~^(?:[^`]|`[^`]*`)*\s+AS\s+~isU', '', $connection->result("SHOW CREATE VIEW " . table($name), 1)));
+		return array("select" => preg_replace('~^(?:[^`]|`[^`]*`)*\s+AS\s+~isU', '', get_val("SHOW CREATE VIEW " . table($name), 1)));
 	}
 
 	/** Get sorted grouped list of collations
@@ -967,12 +964,12 @@ if (!defined('Adminer\DRIVER')) {
 	* @return array ["fields" => ["field" => , "type" => , "length" => , "unsigned" => , "inout" => , "collation" => ], "returns" => , "definition" => , "language" => ]
 	*/
 	function routine($name, $type) {
-		global $connection, $driver;
+		global $driver;
 		$aliases = array("bool", "boolean", "integer", "double precision", "real", "dec", "numeric", "fixed", "national char", "national varchar");
 		$space = "(?:\\s|/\\*[\s\S]*?\\*/|(?:#|-- )[^\n]*\n?|--\r?\n)";
 		$type_pattern = "((" . implode("|", array_merge(array_keys($driver->types()), $aliases)) . ")\\b(?:\\s*\\(((?:[^'\")]|$driver->enumLength)++)\\))?\\s*(zerofill\\s*)?(unsigned(?:\\s+zerofill)?)?)(?:\\s*(?:CHARSET|CHARACTER\\s+SET)\\s*['\"]?([^'\"\\s,]+)['\"]?)?";
 		$pattern = "$space*(" . ($type == "FUNCTION" ? "" : $driver->inout) . ")?\\s*(?:`((?:[^`]|``)*)`\\s*|\\b(\\S+)\\s+)$type_pattern";
-		$create = $connection->result("SHOW CREATE $type " . idf_escape($name), 2);
+		$create = get_val("SHOW CREATE $type " . idf_escape($name), 2);
 		preg_match("~\\(((?:$pattern\\s*,?)*)\\)\\s*" . ($type == "FUNCTION" ? "RETURNS\\s+$type_pattern\\s+" : "") . "(.*)~is", $create, $match);
 		$fields = array();
 		preg_match_all("~$pattern\\s*,?~is", $match[1], $matches, PREG_SET_ORDER);
@@ -990,7 +987,7 @@ if (!defined('Adminer\DRIVER')) {
 		}
 		return array(
 			"fields" => $fields,
-			"comment" => $connection->result("SELECT ROUTINE_COMMENT FROM information_schema.ROUTINES WHERE ROUTINE_SCHEMA = DATABASE() AND ROUTINE_NAME = " . q($name)),
+			"comment" => get_val("SELECT ROUTINE_COMMENT FROM information_schema.ROUTINES WHERE ROUTINE_SCHEMA = DATABASE() AND ROUTINE_NAME = " . q($name)),
 		) + ($type != "FUNCTION" ? array("definition" => $match[11]) : array(
 			"returns" => array("type" => $match[12], "length" => $match[13], "unsigned" => $match[15], "collation" => $match[16]),
 			"definition" => $match[17],
@@ -1025,8 +1022,7 @@ if (!defined('Adminer\DRIVER')) {
 	* @return string
 	*/
 	function last_id() {
-		global $connection;
-		return $connection->result("SELECT LAST_INSERT_ID()"); // mysql_insert_id() truncates bigint
+		return get_val("SELECT LAST_INSERT_ID()"); // mysql_insert_id() truncates bigint
 	}
 
 	/** Explain select
@@ -1089,8 +1085,7 @@ if (!defined('Adminer\DRIVER')) {
 	* @return string
 	*/
 	function create_sql($table, $auto_increment, $style) {
-		global $connection;
-		$return = $connection->result("SHOW CREATE TABLE " . table($table), 1);
+		$return = get_val("SHOW CREATE TABLE " . table($table), 1);
 		if (!$auto_increment) {
 			$return = preg_replace('~ AUTO_INCREMENT=\d+~', '', $return); //! skip comments
 		}
@@ -1208,7 +1203,6 @@ if (!defined('Adminer\DRIVER')) {
 	* @return int
 	*/
 	function max_connections() {
-		global $connection;
-		return $connection->result("SELECT @@max_connections");
+		return get_val("SELECT @@max_connections");
 	}
 }
diff --git a/adminer/drivers/oracle.inc.php b/adminer/drivers/oracle.inc.php
index 86f52e51..d050d33f 100644
--- a/adminer/drivers/oracle.inc.php
+++ b/adminer/drivers/oracle.inc.php
@@ -241,8 +241,7 @@ ORDER BY 1"
 	}
 
 	function db_collation($db, $collations) {
-		global $connection;
-		return $connection->result("SELECT value FROM nls_database_parameters WHERE parameter = 'NLS_CHARACTERSET'"); //! respect $db
+		return get_val("SELECT value FROM nls_database_parameters WHERE parameter = 'NLS_CHARACTERSET'"); //! respect $db
 	}
 
 	function engines() {
@@ -250,8 +249,7 @@ ORDER BY 1"
 	}
 
 	function logged_user() {
-		global $connection;
-		return $connection->result("SELECT USER FROM DUAL");
+		return get_val("SELECT USER FROM DUAL");
 	}
 
 	function get_current_db() {
@@ -284,10 +282,9 @@ ORDER BY 1"
 	}
 
 	function count_tables($databases) {
-		global $connection;
 		$return = array();
 		foreach ($databases as $db) {
-			$return[$db] = $connection->result("SELECT COUNT(*) FROM all_tables WHERE tablespace_name = " . q($db));
+			$return[$db] = get_val("SELECT COUNT(*) FROM all_tables WHERE tablespace_name = " . q($db));
 		}
 		return $return;
 	}
@@ -505,8 +502,7 @@ AND c_src.TABLE_NAME = " . q($table);
 	}
 
 	function get_schema() {
-		global $connection;
-		return $connection->result("SELECT sys_context('USERENV', 'SESSION_USER') FROM dual");
+		return get_val("SELECT sys_context('USERENV', 'SESSION_USER') FROM dual");
 	}
 
 	function set_schema($scheme, $connection2 = null) {
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 919d56d5..57875bdc 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -345,8 +345,7 @@ ORDER BY datname");
 	}
 
 	function db_collation($db, $collations) {
-		global $connection;
-		return $connection->result("SELECT datcollate FROM pg_database WHERE datname = " . q($db));
+		return get_val("SELECT datcollate FROM pg_database WHERE datname = " . q($db));
 	}
 
 	function engines() {
@@ -354,8 +353,7 @@ ORDER BY datname");
 	}
 
 	function logged_user() {
-		global $connection;
-		return $connection->result("SELECT user");
+		return get_val("SELECT user");
 	}
 
 	function tables_list() {
@@ -384,10 +382,9 @@ ORDER BY 1";
 	}
 
 	function table_status($name = "") {
-		global $connection;
 		static $has_size;
 		if ($has_size === null) {
-			$has_size = $connection->result("SELECT 'pg_table_size'::regproc");
+			$has_size = get_val("SELECT 'pg_table_size'::regproc");
 		}
 		$return = array();
 		foreach (
@@ -515,8 +512,7 @@ ORDER BY conkey, conname") as $row
 	}
 
 	function view($name) {
-		global $connection;
-		return array("select" => trim($connection->result("SELECT pg_get_viewdef(" . $connection->result("SELECT oid FROM pg_class WHERE relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = current_schema()) AND relname = " . q($name)) . ")")));
+		return array("select" => trim(get_val("SELECT pg_get_viewdef(" . get_val("SELECT oid FROM pg_class WHERE relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = current_schema()) AND relname = " . q($name)) . ")")));
 	}
 
 	function collations() {
@@ -764,8 +760,7 @@ ORDER BY SPECIFIC_NAME');
 	}
 
 	function found_rows($table_status, $where) {
-		global $connection;
-		if (preg_match("~ rows=([0-9]+)~", $connection->result("EXPLAIN SELECT * FROM " . idf_escape($table_status["Name"]) . ($where ? " WHERE " . implode(" AND ", $where) : "")), $regs)) {
+		if (preg_match("~ rows=([0-9]+)~", get_val("EXPLAIN SELECT * FROM " . idf_escape($table_status["Name"]) . ($where ? " WHERE " . implode(" AND ", $where) : "")), $regs)) {
 			return $regs[1];
 		}
 		return false;
@@ -792,8 +787,7 @@ AND typelem = 0"
 	}
 
 	function get_schema() {
-		global $connection;
-		return $connection->result("SELECT current_schema()");
+		return get_val("SELECT current_schema()");
 	}
 
 	function set_schema($schema, $connection2 = null) {
@@ -947,7 +941,6 @@ AND typelem = 0"
 	}
 
 	function max_connections() {
-		global $connection;
-		return $connection->result("SHOW max_connections");
+		return get_val("SHOW max_connections");
 	}
 }
diff --git a/adminer/drivers/sqlite.inc.php b/adminer/drivers/sqlite.inc.php
index ee75d48d..8b727011 100644
--- a/adminer/drivers/sqlite.inc.php
+++ b/adminer/drivers/sqlite.inc.php
@@ -207,16 +207,14 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function limit1($table, $query, $where, $separator = "\n") {
-		global $connection;
-		return (preg_match('~^INTO~', $query) || $connection->result("SELECT sqlite_compileoption_used('ENABLE_UPDATE_DELETE_LIMIT')")
+		return (preg_match('~^INTO~', $query) || get_val("SELECT sqlite_compileoption_used('ENABLE_UPDATE_DELETE_LIMIT')")
 			? limit($query, $where, 1, 0, $separator)
 			: " $query WHERE rowid = (SELECT rowid FROM " . table($table) . $where . $separator . "LIMIT 1)" //! use primary key in tables with WITHOUT rowid
 		);
 	}
 
 	function db_collation($db, $collations) {
-		global $connection;
-		return $connection->result("PRAGMA encoding"); // there is no database list so $db == DB
+		return get_val("PRAGMA encoding"); // there is no database list so $db == DB
 	}
 
 	function engines() {
@@ -236,10 +234,9 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function table_status($name = "") {
-		global $connection;
 		$return = array();
 		foreach (get_rows("SELECT name AS Name, type AS Engine, 'rowid' AS Oid, '' AS Auto_increment FROM sqlite_master WHERE type IN ('table', 'view') " . ($name != "" ? "AND name = " . q($name) : "ORDER BY name")) as $row) {
-			$row["Rows"] = $connection->result("SELECT COUNT(*) FROM " . idf_escape($row["Name"]));
+			$row["Rows"] = get_val("SELECT COUNT(*) FROM " . idf_escape($row["Name"]));
 			$return[$row["Name"]] = $row;
 		}
 		foreach (get_rows("SELECT * FROM sqlite_sequence", null, "") as $row) {
@@ -253,12 +250,10 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function fk_support($table_status) {
-		global $connection;
-		return !$connection->result("SELECT sqlite_compileoption_used('OMIT_FOREIGN_KEY')");
+		return !get_val("SELECT sqlite_compileoption_used('OMIT_FOREIGN_KEY')");
 	}
 
 	function fields($table) {
-		global $connection;
 		$return = array();
 		$primary = "";
 		foreach (get_rows("PRAGMA table_" . (min_version(3.31) ? "x" : "") . "info(" . table($table) . ")") as $row) {
@@ -283,7 +278,7 @@ if (isset($_GET["sqlite"])) {
 				$primary = $name;
 			}
 		}
-		$sql = $connection->result("SELECT sql FROM sqlite_master WHERE type = 'table' AND name = " . q($table));
+		$sql = get_val("SELECT sql FROM sqlite_master WHERE type = 'table' AND name = " . q($table));
 		$idf = '(("[^"]*+")+|[a-z0-9_]+)';
 		preg_match_all('~' . $idf . '\s+text\s+COLLATE\s+(\'[^\']+\'|\S+)~i', $sql, $matches, PREG_SET_ORDER);
 		foreach ($matches as $match) {
@@ -362,8 +357,7 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function view($name) {
-		global $connection;
-		return array("select" => preg_replace('~^(?:[^`"[]+|`[^`]*`|"[^"]*")* AS\s+~iU', '', $connection->result("SELECT sql FROM sqlite_master WHERE type = 'view' AND name = " . q($name)))); //! identifiers may be inside []
+		return array("select" => preg_replace('~^(?:[^`"[]+|`[^`]*`|"[^"]*")* AS\s+~iU', '', get_val("SELECT sql FROM sqlite_master WHERE type = 'view' AND name = " . q($name)))); //! identifiers may be inside []
 	}
 
 	function collations() {
@@ -492,7 +486,7 @@ if (isset($_GET["sqlite"])) {
 	* @return bool
 	*/
 	function recreate_table($table, $name, $fields, $originals, $foreign, $auto_increment = 0, $indexes = array(), $drop_check = "", $add_check = "") {
-		global $connection, $driver;
+		global $driver;
 		if ($table != "") {
 			if (!$fields) {
 				foreach (fields($table) as $key => $field) {
@@ -578,7 +572,7 @@ if (isset($_GET["sqlite"])) {
 				$trigger = trigger($trigger_name);
 				$triggers[] = "CREATE TRIGGER " . idf_escape($trigger_name) . " " . implode(" ", $timing_event) . " ON " . table($name) . "\n$trigger[Statement]";
 			}
-			$auto_increment = $auto_increment ? 0 : $connection->result("SELECT seq FROM sqlite_sequence WHERE name = " . q($table)); // if $auto_increment is set then it will be updated later
+			$auto_increment = $auto_increment ? 0 : get_val("SELECT seq FROM sqlite_sequence WHERE name = " . q($table)); // if $auto_increment is set then it will be updated later
 			if (
 				!queries("DROP TABLE " . table($table)) // drop before creating indexes and triggers to allow using old names
 				|| ($table == $name && !queries("ALTER TABLE " . table($temp_name) . " RENAME TO " . table($name)))
@@ -642,7 +636,6 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function trigger($name) {
-		global $connection;
 		if ($name == "") {
 			return array("Statement" => "BEGIN\n\t;\nEND");
 		}
@@ -650,7 +643,7 @@ if (isset($_GET["sqlite"])) {
 		$trigger_options = trigger_options();
 		preg_match(
 			"~^CREATE\\s+TRIGGER\\s*$idf\\s*(" . implode("|", $trigger_options["Timing"]) . ")\\s+([a-z]+)(?:\\s+OF\\s+($idf))?\\s+ON\\s*$idf\\s*(?:FOR\\s+EACH\\s+ROW\\s)?(.*)~is",
-			$connection->result("SELECT sql FROM sqlite_master WHERE type = 'trigger' AND name = " . q($name)),
+			get_val("SELECT sql FROM sqlite_master WHERE type = 'trigger' AND name = " . q($name)),
 			$match
 		);
 		$of = $match[3];
@@ -686,8 +679,7 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function last_id() {
-		global $connection;
-		return $connection->result("SELECT LAST_INSERT_ROWID()");
+		return get_val("SELECT LAST_INSERT_ROWID()");
 	}
 
 	function explain($connection, $query) {
@@ -702,8 +694,7 @@ if (isset($_GET["sqlite"])) {
 	}
 
 	function create_sql($table, $auto_increment, $style) {
-		global $connection;
-		$return = $connection->result("SELECT sql FROM sqlite_master WHERE type IN ('table', 'view') AND name = " . q($table));
+		$return = get_val("SELECT sql FROM sqlite_master WHERE type IN ('table', 'view') AND name = " . q($table));
 		foreach (indexes($table) as $name => $index) {
 			if ($name == '') {
 				continue;
diff --git a/adminer/dump.inc.php b/adminer/dump.inc.php
index 032dab26..28e1f34f 100644
--- a/adminer/dump.inc.php
+++ b/adminer/dump.inc.php
@@ -42,7 +42,7 @@ SET foreign_key_checks = 0;
 	foreach ((array) $databases as $db) {
 		$adminer->dumpDatabase($db);
 		if ($connection->select_db($db)) {
-			if ($is_sql && preg_match('~CREATE~', $style) && ($create = $connection->result("SHOW CREATE DATABASE " . idf_escape($db), 1))) {
+			if ($is_sql && preg_match('~CREATE~', $style) && ($create = get_val("SHOW CREATE DATABASE " . idf_escape($db), 1))) {
 				set_utf8mb4($create);
 				if ($style == "DROP+CREATE") {
 					echo "DROP DATABASE IF EXISTS " . idf_escape($db) . ";\n";
@@ -79,7 +79,7 @@ SET foreign_key_checks = 0;
 
 				if ($_POST["events"]) {
 					foreach (get_rows("SHOW EVENTS", null, "-- ") as $row) {
-						$create = remove_definer($connection->result("SHOW CREATE EVENT " . idf_escape($row["Name"]), 3));
+						$create = remove_definer(get_val("SHOW CREATE EVENT " . idf_escape($row["Name"]), 3));
 						set_utf8mb4($create);
 						$out .= ($style != 'DROP+CREATE' ? "DROP EVENT IF EXISTS " . idf_escape($row["Name"]) . ";;\n" : "") . "$create;;\n\n";
 					}
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index ad1c7e82..e1bd69a0 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -337,6 +337,16 @@ function q($string) {
 	return $connection->quote($string);
 }
 
+/** Get single value from database
+* @param string
+* @param int
+* @return string or false if error
+*/
+function get_val($query, $field = 0) {
+	global $connection;
+	return $connection->result($query, $field);
+}
+
 /** Get list of values from database
 * @param string
 * @param mixed
diff --git a/adminer/select.inc.php b/adminer/select.inc.php
index 9fe71ec0..23658290 100644
--- a/adminer/select.inc.php
+++ b/adminer/select.inc.php
@@ -262,7 +262,7 @@ if (!$columns && support("table")) {
 
 	$page = $_GET["page"];
 	if ($page == "last") {
-		$found_rows = $connection->result(count_rows($TABLE, $where, $is_group, $group));
+		$found_rows = get_val(count_rows($TABLE, $where, $is_group, $group));
 		$page = floor(max(0, $found_rows - 1) / $limit);
 	}
 
@@ -309,7 +309,7 @@ if (!$columns && support("table")) {
 
 		// use count($rows) without LIMIT, COUNT(*) without grouping, FOUND_ROWS otherwise (slowest)
 		if ($_GET["page"] != "last" && $limit != "" && $group && $is_group && JUSH == "sql") {
-			$found_rows = $connection->result(" SELECT FOUND_ROWS()"); // space to allow mysql.trace_mode
+			$found_rows = get_val(" SELECT FOUND_ROWS()"); // space to allow mysql.trace_mode
 		}
 
 		if (!$rows) {
diff --git a/adminer/user.inc.php b/adminer/user.inc.php
index 1fb31ffb..5243ea3b 100644
--- a/adminer/user.inc.php
+++ b/adminer/user.inc.php
@@ -56,7 +56,7 @@ if ($_POST && !$error) {
 		$pass = $_POST["pass"];
 		if ($pass != '' && !$_POST["hashed"] && !min_version(8)) {
 			// compute hash in a separate query so that plain text password is not saved to history
-			$pass = $connection->result("SELECT PASSWORD(" . q($pass) . ")");
+			$pass = get_val("SELECT PASSWORD(" . q($pass) . ")");
 			$error = !$pass;
 		}
 
@@ -124,7 +124,7 @@ if ($_POST) {
 	$row = $_POST;
 	$grants = $new_grants;
 } else {
-	$row = $_GET + array("host" => $connection->result("SELECT SUBSTRING_INDEX(CURRENT_USER, '@', -1)")); // create user on the same domain by default
+	$row = $_GET + array("host" => get_val("SELECT SUBSTRING_INDEX(CURRENT_USER, '@', -1)")); // create user on the same domain by default
 	$row["pass"] = $old_pass;
 	if ($old_pass != "") {
 		$row["hashed"] = true;
diff --git a/editor/include/adminer.inc.php b/editor/include/adminer.inc.php
index 752aa747..83353b87 100644
--- a/editor/include/adminer.inc.php
+++ b/editor/include/adminer.inc.php
@@ -34,7 +34,7 @@ class Adminer {
 		if ($connection) {
 			$databases = $this->databases(false);
 			return (!$databases
-				? $connection->result("SELECT SUBSTRING_INDEX(CURRENT_USER, '@', 1)") // username without the database list
+				? get_val("SELECT SUBSTRING_INDEX(CURRENT_USER, '@', 1)") // username without the database list
 				: $databases[(information_schema($databases[0]) ? 1 : 0)] // first available database
 			);
 		}
@@ -652,7 +652,6 @@ qsl('div').onclick = whisperClick;", "")
 	}
 
 	function _foreignKeyOptions($table, $column, $value = null) {
-		global $connection;
 		if (list($target, $id, $name) = $this->_foreignColumn(column_foreign_keys($table), $column)) {
 			$return = &$this->_values[$target];
 			if ($return === null) {
@@ -660,7 +659,7 @@ qsl('div').onclick = whisperClick;", "")
 				$return = ($table_status["Rows"] > 1000 ? "" : array("" => "") + get_key_vals("SELECT $id, $name FROM " . table($target) . " ORDER BY 2"));
 			}
 			if (!$return && $value !== null) {
-				return $connection->result("SELECT $name FROM " . table($target) . " WHERE $id = " . q($value));
+				return get_val("SELECT $name FROM " . table($target) . " WHERE $id = " . q($value));
 			}
 			return $return;
 		}
diff --git a/plugins/dump-date.php b/plugins/dump-date.php
index 56a2bc56..3983109c 100644
--- a/plugins/dump-date.php
+++ b/plugins/dump-date.php
@@ -9,7 +9,6 @@
 class AdminerDumpDate {
 
 	function dumpFilename($identifier) {
-		$connection = Adminer\connection();
-		return Adminer\friendly_url(($identifier != "" ? $identifier : (Adminer\SERVER != "" ? Adminer\SERVER : "localhost")) . "-" . $connection->result("SELECT NOW()"));
+		return Adminer\friendly_url(($identifier != "" ? $identifier : (Adminer\SERVER != "" ? Adminer\SERVER : "localhost")) . "-" . Adminer\get_val("SELECT NOW()"));
 	}
 }
diff --git a/plugins/login-table.php b/plugins/login-table.php
index 64cd6c10..051b2cff 100644
--- a/plugins/login-table.php
+++ b/plugins/login-table.php
@@ -27,7 +27,6 @@ class AdminerLoginTable {
 	}
 
 	function login($login, $password) {
-		$connection = Adminer\connection();
-		return (bool) $connection->result("SELECT COUNT(*) FROM " . Adminer\idf_escape($this->database) . ".login WHERE login = " . Adminer\q($login) . " AND password_sha1 = " . Adminer\q(sha1($password)));
+		return (bool) Adminer\get_val("SELECT COUNT(*) FROM " . Adminer\idf_escape($this->database) . ".login WHERE login = " . Adminer\q($login) . " AND password_sha1 = " . Adminer\q(sha1($password)));
 	}
 }