diff --git a/adminer/drivers/mssql.inc.php b/adminer/drivers/mssql.inc.php
index 298528713..fc991e07c 100644
--- a/adminer/drivers/mssql.inc.php
+++ b/adminer/drivers/mssql.inc.php
@@ -51,7 +51,7 @@ function attach(string $server, string $username, string $password): string {
 			}
 
 			function quote(string $string): string {
-				$unicode = strlen($string) != strlen(utf8_decode($string));
+				$unicode = preg_match('~[\x80-\xFF]~', $string);
 				return ($unicode ? "N" : "") . "'" . str_replace("'", "''", $string) . "'";
 			}
 
diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index 53e0fdb52..797ede919 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -17,7 +17,7 @@ function __construct() {
 			}
 
 			function attach(string $server, string $username, string $password): string {
-				mysqli_report(MYSQLI_REPORT_OFF); // stays between requests, not required since PHP 5.3.4
+				mysqli_report(MYSQLI_REPORT_OFF);
 				list($host, $port) = host_port($server);
 				$ssl = adminer()->connectSsl();
 				if ($ssl) {
@@ -36,7 +36,7 @@ function attach(string $server, string $username, string $password): string {
 				return ($return ? '' : $this->error);
 			}
 
-			function set_charset($charset) {
+			function set_charset($charset): bool {
 				if (parent::set_charset($charset)) {
 					return true;
 				}
@@ -45,8 +45,8 @@ function set_charset($charset) {
 				return $this->query("SET NAMES $charset");
 			}
 
-			function next_result() {
-				return self::more_results() && parent::next_result(); // triggers E_STRICT on PHP < 7.4 otherwise
+			function next_result(): bool {
+				return self::more_results() && parent::next_result();
 			}
 
 			function quote(string $string): string {
@@ -54,106 +54,6 @@ function quote(string $string): string {
 			}
 		}
 
-	} elseif (extension_loaded("mysql") && !((ini_bool("sql.safe_mode") || ini_bool("mysql.allow_local_infile")) && extension_loaded("pdo_mysql"))) {
-		class Db extends SqlDb {
-			/** @var resource */ private $link;
-
-			function attach(string $server, string $username, string $password): string {
-				if (ini_bool("mysql.allow_local_infile")) {
-					return lang('Disable %s or enable %s or %s extensions.', "'mysql.allow_local_infile'", "MySQLi", "PDO_MySQL");
-				}
-				$this->link = @mysql_connect(
-					($server != "" ? $server : ini_get("mysql.default_host")),
-					($server . $username != "" ? $username : ini_get("mysql.default_user")),
-					($server . $username . $password != "" ? $password : ini_get("mysql.default_password")),
-					true,
-					131072 // CLIENT_MULTI_RESULTS for CALL
-				);
-				if (!$this->link) {
-					return mysql_error();
-				}
-				$this->server_info = mysql_get_server_info($this->link);
-				return '';
-			}
-
-			/** Set the client character set */
-			function set_charset(string $charset): bool {
-				if (function_exists('mysql_set_charset')) {
-					if (mysql_set_charset($charset, $this->link)) {
-						return true;
-					}
-					// the client library may not support utf8mb4
-					mysql_set_charset('utf8', $this->link);
-				}
-				return $this->query("SET NAMES $charset");
-			}
-
-			function quote(string $string): string {
-				return "'" . mysql_real_escape_string($string, $this->link) . "'";
-			}
-
-			function select_db(string $database) {
-				return mysql_select_db($database, $this->link);
-			}
-
-			function query(string $query, bool $unbuffered = false) {
-				$result = @($unbuffered ? mysql_unbuffered_query($query, $this->link) : mysql_query($query, $this->link)); // @ - mute mysql.trace_mode
-				$this->error = "";
-				if (!$result) {
-					$this->errno = mysql_errno($this->link);
-					$this->error = mysql_error($this->link);
-					return false;
-				}
-				if ($result === true) {
-					$this->affected_rows = mysql_affected_rows($this->link);
-					$this->info = mysql_info($this->link);
-					return true;
-				}
-				return new Result($result);
-			}
-		}
-
-		class Result {
-			public $num_rows; // number of rows in the result
-			/** @var resource */ private $result;
-			private int $offset = 0;
-
-			/** @param resource $result */
-			function __construct($result) {
-				$this->result = $result;
-				$this->num_rows = mysql_num_rows($result);
-			}
-
-			/** Fetch next row as associative array
-			* @return array<?string>|false
-			*/
-			function fetch_assoc() {
-				return mysql_fetch_assoc($this->result);
-			}
-
-			/** Fetch next row as numbered array
-			* @return list<?string>|false
-			*/
-			function fetch_row() {
-				return mysql_fetch_row($this->result);
-			}
-
-			/** Fetch next field
-			* @return \stdClass properties: name, type (0 number, 15 varchar, 254 char), charsetnr (63 binary); optionally: table, orgtable, orgname
-			*/
-			function fetch_field(): \stdClass {
-				$return = mysql_fetch_field($this->result, $this->offset++); // offset required under certain conditions
-				$return->orgtable = $return->table;
-				$return->charsetnr = ($return->blob ? 63 : 0);
-				return $return;
-			}
-
-			/** Free result set */
-			function __destruct() {
-				mysql_free_result($this->result);
-			}
-		}
-
 	} elseif (extension_loaded("pdo_mysql")) {
 		class Db extends PdoDb {
 			public $extension = "PDO_MySQL";
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index e5fcaeec8..68b71a4f5 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -88,12 +88,8 @@ function query(string $query, bool $unbuffered = false) {
 			}
 
 			function warnings() {
-				if (PHP_VERSION_ID >= 70100) {
-					$return = implode("\n", pg_last_notice($this->link, 2)); // 2 - PGSQL_NOTICE_ALL
-					pg_last_notice($this->link, 3); // 3 - PGSQL_NOTICE_CLEAR
-				} else {
-					$return = pg_last_notice($this->link);
-				}
+				$return = implode("\n", pg_last_notice($this->link, PGSQL_NOTICE_ALL));
+				pg_last_notice($this->link, PGSQL_NOTICE_CLEAR);
 				return nl_br(h($return));
 			}
 
diff --git a/adminer/include/bootstrap.inc.php b/adminer/include/bootstrap.inc.php
index c9a599906..c05632547 100644
--- a/adminer/include/bootstrap.inc.php
+++ b/adminer/include/bootstrap.inc.php
@@ -50,15 +50,7 @@
 	session_start();
 }
 
-// disable magic quotes to be able to use database escaping function
-if (function_exists("get_magic_quotes_gpc") && get_magic_quotes_gpc()) {
-	$_GET = remove_slashes($_GET, $filter);
-	$_POST = remove_slashes($_POST, $filter);
-	$_COOKIE = remove_slashes($_COOKIE, $filter);
-}
-if (function_exists("get_magic_quotes_runtime") && get_magic_quotes_runtime()) {
-	set_magic_quotes_runtime(false);
-}
+
 @set_time_limit(0); // @ - can be disabled
 @ini_set("precision", '15'); // @ - can be disabled, 15 - internal PHP precision
 
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 816921d24..864075e06 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -562,7 +562,7 @@ function upload_error(int $error): string {
 /** Create repeat pattern for preg */
 function repeat_pattern(string $pattern, int $length): string {
 	// fix for Compilation failed: number too big in {} quantifier
-	return str_repeat("$pattern{0,65535}", $length / 65535) . "$pattern{0," . ($length % 65535) . "}"; // can create {0,0} which is OK
+	return str_repeat($pattern . "{0,65535}", $length / 65535) . $pattern . "{0," . ($length % 65535) . "}"; // can create {0,0} which is OK
 }
 
 /** Check whether the string is in UTF-8 */
diff --git a/adminer/select.inc.php b/adminer/select.inc.php
index 6255c4c09..a344b4403 100644
--- a/adminer/select.inc.php
+++ b/adminer/select.inc.php
@@ -371,7 +371,7 @@
 			if ($_GET["modify"]) {
 				foreach ($rows as $row) {
 					foreach ($row as $key => $val) {
-						$lengths[$key] = max($lengths[$key], min(40, strlen(utf8_decode($val))));
+						$lengths[$key] = max($lengths[$key], min(40, (int) mb_strlen((string) $val)));
 					}
 				}
 			}
diff --git a/composer.json b/composer.json
index 7c70f84fc..92815d86c 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "GPL-2.0-only"
     ],
     "require": {
-        "php": ">=7.4"
+        "php": ">=8.0"
     },
     "scripts": {
         "check": [
diff --git a/phpstan.neon b/phpstan.neon
index 1b2253aea..4e3ecc440 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -9,8 +9,6 @@ parameters:
 		- "~Function Adminer\\\\queries\\(\\) never returns Adminer\\\\Result~" # mysqli_result
 
 		# not real problems
-		- identifier: include.fileNotFound # includes in include/ relative from index.php
-		- "~^Function (set_magic_quotes_runtime|mysql_)~" # PHP < 7 functions
 		- "~an unknown class OCI-?Lob~" # this looks like PHPStan bug
 		- "~^Variable \\$error might not be defined~" # declared in bootstrap.inc.php
 		- "~^Constant LANG not found~" # defined in lang.inc.php
@@ -22,7 +20,6 @@ parameters:
 		- "~expects bool~" # truthy values
 		- "~fread expects int<1, max>, 100000~" # 1e6
 		- "~'strlen' given~" # used as a bool callback
-		- "~between int<70100~" # PHP_VERSION_ID check
 
 		-
 			message: "~ type specified~" # duplicate functions and methods
@@ -32,21 +29,17 @@ parameters:
 
 		# it probably doesn't like $ar[$key] instead of isset($ar[$key]) and thinks that $ar[$key] is always set
 		- identifier: identical.alwaysFalse
-		- identifier: notEqual.alwaysFalse
-		- identifier: notIdentical.alwaysTrue
 		- identifier: booleanNot.alwaysTrue
 		- identifier: booleanNot.alwaysFalse
 		- identifier: booleanAnd.alwaysFalse
 		- identifier: booleanAnd.leftAlwaysTrue
 		- identifier: booleanAnd.rightAlwaysTrue
-		- identifier: booleanAnd.rightAlwaysFalse
 		- identifier: booleanOr.rightAlwaysTrue
 		- identifier: ternary.alwaysTrue
 		- identifier: if.alwaysTrue
 		- identifier: isset.offset
 		- identifier: deadCode.unreachable
 		- "~Function Adminer\\\\get_driver\\(\\) never returns null~"
-		- "~on array\\{}~"
 
 	paths:
 		- adminer/drivers/mysql.inc.php # other drivers inherit the annotations so we take them from here
@@ -59,9 +52,7 @@ parameters:
 		- adminer/elastic.php
 		- adminer/sqlite.php
 
-	phpVersion:
-		min: 70100
-		max: 80499
+	phpVersion: 80100
 
 	typeAliases:
 		TableStatus: "array{Name:string, Engine?:?string, Comment?:string, Oid?:numeric-string, Rows?:?numeric-string, Collation?:string, Auto_increment?:?numeric-string, Data_length?:numeric-string, Index_length?:numeric-string, Data_free?:numeric-string, Create_options?:string, partition?:numeric-string, nspname?:string}"