diff --git a/examples/openid.php b/examples/openid.php
index 8d84566a49..c5383f82fb 100644
--- a/examples/openid.php
+++ b/examples/openid.php
@@ -31,7 +31,7 @@ $AUTH_MAP = [
     ],
 ];
 
-// phpcs:disable PSR1.Files.SideEffects
+// phpcs:disable PSR1.Files.SideEffects,Squiz.Functions.GlobalFunction
 
 /**
  * Simple function to show HTML page with given content.
diff --git a/examples/signon-script.php b/examples/signon-script.php
index aa4e778a0f..34e419c17c 100644
--- a/examples/signon-script.php
+++ b/examples/signon-script.php
@@ -9,6 +9,8 @@
 
 declare(strict_types=1);
 
+// phpcs:disable Squiz.Functions.GlobalFunction
+
 /**
  * This function returns username and password.
  *
diff --git a/libraries/classes/Config/FormDisplay.php b/libraries/classes/Config/FormDisplay.php
index 205629f52f..c72aa23208 100644
--- a/libraries/classes/Config/FormDisplay.php
+++ b/libraries/classes/Config/FormDisplay.php
@@ -615,6 +615,7 @@ class FormDisplay
 
             // keep boolean value as boolean
             if (! is_bool($value)) {
+                // phpcs:ignore Generic.PHP.ForbiddenFunctions
                 settype($value, gettype($vk));
             }
 
@@ -699,12 +700,14 @@ class FormDisplay
                 switch ($type) {
                     case 'double':
                         $_POST[$key] = Util::requestString($_POST[$key]);
+                        // phpcs:ignore Generic.PHP.ForbiddenFunctions
                         settype($_POST[$key], 'float');
                         break;
                     case 'boolean':
                     case 'integer':
                         if ($_POST[$key] !== '') {
                             $_POST[$key] = Util::requestString($_POST[$key]);
+                            // phpcs:ignore Generic.PHP.ForbiddenFunctions
                             settype($_POST[$key], $type);
                         }
                         break;
diff --git a/libraries/classes/Plugins.php b/libraries/classes/Plugins.php
index 00bb68b3a2..6a33c267a5 100644
--- a/libraries/classes/Plugins.php
+++ b/libraries/classes/Plugins.php
@@ -95,6 +95,8 @@ class Plugins
      */
     public static function getPlugins($plugin_type, $plugins_dir, $plugin_param)
     {
+        global $skip_import;
+
         $GLOBALS['plugin_param'] = $plugin_param;
 
         $handle = @opendir($plugins_dir);
@@ -125,12 +127,12 @@ class Plugins
                 continue;
             }
 
-            /** @var bool */
-            $GLOBALS['skip_import'] = false;
+            /** @var bool $skip_import */
+            $skip_import = false;
 
             include_once $plugins_dir . $file;
 
-            if ($GLOBALS['skip_import']) {
+            if ($skip_import) {
                 continue;
             }
 
diff --git a/libraries/classes/Plugins/Transformations/Abs/InlineTransformationsPlugin.php b/libraries/classes/Plugins/Transformations/Abs/InlineTransformationsPlugin.php
index dd605fa081..25f034385e 100644
--- a/libraries/classes/Plugins/Transformations/Abs/InlineTransformationsPlugin.php
+++ b/libraries/classes/Plugins/Transformations/Abs/InlineTransformationsPlugin.php
@@ -11,6 +11,7 @@ use PhpMyAdmin\Plugins\TransformationsPlugin;
 use PhpMyAdmin\Url;
 use stdClass;
 use function array_merge;
+use function defined;
 use function htmlspecialchars;
 
 /**
diff --git a/libraries/classes/Query/Cache.php b/libraries/classes/Query/Cache.php
index b50c719d32..7d946b02b0 100644
--- a/libraries/classes/Query/Cache.php
+++ b/libraries/classes/Query/Cache.php
@@ -1,16 +1,19 @@
 <?php
+
 declare(strict_types=1);
 
 namespace PhpMyAdmin\Query;
 
 use PhpMyAdmin\Util;
+use function array_shift;
+use function count;
+use function is_array;
 
 /**
  * Handles caching results
  */
 class Cache
 {
-
     /** @var array Table data cache */
     private $tableCache = [];
 
diff --git a/libraries/classes/Query/Generator.php b/libraries/classes/Query/Generator.php
index f4c40f72a2..da30de57c0 100644
--- a/libraries/classes/Query/Generator.php
+++ b/libraries/classes/Query/Generator.php
@@ -1,9 +1,12 @@
 <?php
+
 declare(strict_types=1);
 
 namespace PhpMyAdmin\Query;
 
 use PhpMyAdmin\Util;
+use function implode;
+use function is_array;
 
 /**
  * Handles generating SQL queries
diff --git a/libraries/classes/Relation.php b/libraries/classes/Relation.php
index 6124828a4e..b9d7a09ecb 100644
--- a/libraries/classes/Relation.php
+++ b/libraries/classes/Relation.php
@@ -24,6 +24,7 @@ use function htmlspecialchars;
 use function implode;
 use function in_array;
 use function is_array;
+use function is_bool;
 use function is_string;
 use function ksort;
 use function mb_check_encoding;
@@ -611,6 +612,7 @@ class Relation
             }
         }
         $this->dbi->freeResult($tableRes);
+
         return $cfgRelation;
     }
 
diff --git a/libraries/classes/Response.php b/libraries/classes/Response.php
index 0078158bbf..c20952b3ee 100644
--- a/libraries/classes/Response.php
+++ b/libraries/classes/Response.php
@@ -538,6 +538,7 @@ class Response
      */
     public function header($text)
     {
+        // phpcs:ignore SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
         header($text);
     }
 
diff --git a/libraries/classes/Twig/I18n/NodeTrans.php b/libraries/classes/Twig/I18n/NodeTrans.php
index 8a187ef3a3..dd88ef358b 100644
--- a/libraries/classes/Twig/I18n/NodeTrans.php
+++ b/libraries/classes/Twig/I18n/NodeTrans.php
@@ -31,10 +31,10 @@ class NodeTrans extends TransNode
      */
     public function __construct(
         Node $body,
-        Node $plural = null,
-        AbstractExpression $count = null,
-        Node $context = null,
-        Node $notes = null,
+        ?Node $plural = null,
+        ?AbstractExpression $count = null,
+        ?Node $context = null,
+        ?Node $notes = null,
         $lineno,
         $tag = null
     ) {
@@ -66,11 +66,11 @@ class NodeTrans extends TransNode
     {
         $compiler->addDebugInfo($this);
 
-        list($msg, $vars) = $this->compileString($this->getNode('body'));
+        [$msg, $vars] = $this->compileString($this->getNode('body'));
 
         $msg1 = null;
         if ($this->hasNode('plural')) {
-            list($msg1, $vars1) = $this->compileString($this->getNode('plural'));
+            [$msg1, $vars1] = $this->compileString($this->getNode('plural'));
 
             $vars = array_merge($vars, $vars1);
         }
diff --git a/libraries/classes/Twig/MessageExtension.php b/libraries/classes/Twig/MessageExtension.php
index b8720b6cff..b642732b54 100644
--- a/libraries/classes/Twig/MessageExtension.php
+++ b/libraries/classes/Twig/MessageExtension.php
@@ -23,21 +23,21 @@ class MessageExtension extends AbstractExtension
         return [
             new TwigFilter(
                 'notice',
-                function (string $string) {
+                static function (string $string) {
                     return Message::notice($string)->getDisplay();
                 },
                 ['is_safe' => ['html']]
             ),
             new TwigFilter(
                 'error',
-                function (string $string) {
+                static function (string $string) {
                     return Message::error($string)->getDisplay();
                 },
                 ['is_safe' => ['html']]
             ),
             new TwigFilter(
                 'raw_success',
-                function (string $string) {
+                static function (string $string) {
                     return Message::rawSuccess($string)->getDisplay();
                 },
                 ['is_safe' => ['html']]
diff --git a/libraries/classes/Twig/RelationExtension.php b/libraries/classes/Twig/RelationExtension.php
index fa244744bc..8183bb1804 100644
--- a/libraries/classes/Twig/RelationExtension.php
+++ b/libraries/classes/Twig/RelationExtension.php
@@ -21,6 +21,7 @@ class RelationExtension extends AbstractExtension
     public function getFunctions()
     {
         $relation = new Relation($GLOBALS['dbi']);
+
         return [
             new TwigFunction(
                 'foreign_dropdown',
diff --git a/libraries/classes/Twig/TransformationsExtension.php b/libraries/classes/Twig/TransformationsExtension.php
index 7bfc51b629..7af3589292 100644
--- a/libraries/classes/Twig/TransformationsExtension.php
+++ b/libraries/classes/Twig/TransformationsExtension.php
@@ -21,6 +21,7 @@ class TransformationsExtension extends AbstractExtension
     public function getFunctions()
     {
         $transformations = new Transformations();
+
         return [
             new TwigFunction(
                 'get_description',
diff --git a/libraries/classes/Util.php b/libraries/classes/Util.php
index 58d8d56b24..946111625f 100644
--- a/libraries/classes/Util.php
+++ b/libraries/classes/Util.php
@@ -1016,6 +1016,7 @@ class Util
             $conditionValue = '= \''
                 . $GLOBALS['dbi']->escapeString($row) . '\'';
         }
+
         return [$conditionValue, $condition];
     }
 
@@ -1114,7 +1115,7 @@ class Util
             $condition = ' ' . $con_key . ' ';
 
             [$con_val, $condition] = self::getConditionValue(
-                (! isset($row[$i]) || $row[$i] === null) ? null : $row[$i],
+                ! isset($row[$i]) || $row[$i] === null ? null : $row[$i],
                 $meta,
                 $GLOBALS['dbi']->fieldFlags($handle, $i),
                 $fields_cnt,
diff --git a/phpcs.xml.dist b/phpcs.xml.dist
index eb32f33e3a..9c850ee5bf 100644
--- a/phpcs.xml.dist
+++ b/phpcs.xml.dist
@@ -22,29 +22,7 @@
         <exclude name="SlevomatCodingStandard.Operators.DisallowEqualOperators"/>
         <exclude name="SlevomatCodingStandard.TypeHints.TypeHintDeclaration"/>
 
-        <exclude name="Squiz.Arrays.ArrayDeclaration"/>
-        <exclude name="SlevomatCodingStandard.Classes.EmptyLinesAroundClassBraces"/>
-        <exclude name="SlevomatCodingStandard.Commenting.DocCommentSpacing.IncorrectLinesCountBetweenDescriptionAndAnnotations"/>
-        <exclude name="SlevomatCodingStandard.Commenting.InlineDocCommentDeclaration.InvalidFormat"/>
-        <exclude name="SlevomatCodingStandard.ControlStructures.ControlStructureSpacing"/>
         <exclude name="SlevomatCodingStandard.ControlStructures.EarlyExit"/>
-        <exclude name="SlevomatCodingStandard.Functions.StaticClosure"/>
-        <exclude name="SlevomatCodingStandard.Namespaces.AlphabeticallySortedUses"/>
-        <exclude name="SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly.ReferenceViaFallbackGlobalName"/>
-        <exclude name="SlevomatCodingStandard.Namespaces.UnusedUses"/>
-        <exclude name="SlevomatCodingStandard.PHP.ShortList"/>
-        <exclude name="SlevomatCodingStandard.PHP.UselessParentheses"/>
-        <exclude name="SlevomatCodingStandard.TypeHints.DeclareStrictTypes"/>
-        <exclude name="SlevomatCodingStandard.TypeHints.NullableTypeForNullDefaultValue"/>
-    </rule>
-
-    <rule ref="Generic.PHP.ForbiddenFunctions">
-        <exclude-pattern>libraries/classes/Config/FormDisplay.php</exclude-pattern>
-    </rule>
-
-    <rule ref="Squiz.Functions.GlobalFunction">
-        <exclude-pattern>examples/openid.php</exclude-pattern>
-        <exclude-pattern>examples/signon-script.php</exclude-pattern>
     </rule>
 
     <rule ref="SlevomatCodingStandard.Classes.UnusedPrivateElements.UnusedMethod">
diff --git a/test/classes/TableTest.php b/test/classes/TableTest.php
index dd940ee9a6..cbbb8170e0 100644
--- a/test/classes/TableTest.php
+++ b/test/classes/TableTest.php
@@ -9,12 +9,11 @@ namespace PhpMyAdmin\Tests;
 
 use PhpMyAdmin\DatabaseInterface;
 use PhpMyAdmin\Index;
+use PhpMyAdmin\Query\Cache;
 use PhpMyAdmin\Relation;
 use PhpMyAdmin\Table;
-use PhpMyAdmin\Query\Cache;
 use PhpMyAdmin\Tests\Stubs\DbiDummy;
 use stdClass;
-use ReflectionClass;
 
 /**
  * Tests behaviour of Table class
@@ -947,9 +946,7 @@ class TableTest extends AbstractTestCase
 
         $dbi->getCache()->cacheTableContent(
             ['PMA', 'PMA_BookMark'],
-            [
-                'ENGINE' => 'MERGE',
-            ]
+            ['ENGINE' => 'MERGE']
         );
 
         $tableObj = new Table('PMA_BookMark', 'PMA');
@@ -970,9 +967,7 @@ class TableTest extends AbstractTestCase
 
         $dbi->getCache()->cacheTableContent(
             ['PMA', 'PMA_BookMark'],
-            [
-                'ENGINE' => 'MRG_MYISAM',
-            ]
+            ['ENGINE' => 'MRG_MYISAM']
         );
 
         $tableObj = new Table('PMA_BookMark', 'PMA');
diff --git a/test/classes/UtilTest.php b/test/classes/UtilTest.php
index 92da6ea88d..d206b85726 100644
--- a/test/classes/UtilTest.php
+++ b/test/classes/UtilTest.php
@@ -21,6 +21,7 @@ use function floatval;
 use function htmlspecialchars;
 use function ini_get;
 use function ini_set;
+use function str_repeat;
 use function str_replace;
 use function strlen;
 use function trim;
@@ -74,6 +75,7 @@ class UtilTest extends AbstractTestCase
 
     /**
      * Test for listPHPExtensions
+     *
      * @requires extension mysqli
      * @requires extension curl
      * @requires extension mbstring