diff --git a/.github/workflows/backward-compatibility.yml b/.github/workflows/backward-compatibility.yml
index c0bdcb9480..b1bdee7855 100644
--- a/.github/workflows/backward-compatibility.yml
+++ b/.github/workflows/backward-compatibility.yml
@@ -6,10 +6,10 @@ on:
   pull_request:
   push:
     branches:
-      - "master"
+      - "**"
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   backward-compatibility:
diff --git a/.github/workflows/compiler-tests.yml b/.github/workflows/compiler-tests.yml
index 65e1c2e58d..3333d665fe 100644
--- a/.github/workflows/compiler-tests.yml
+++ b/.github/workflows/compiler-tests.yml
@@ -6,10 +6,10 @@ on:
   pull_request:
   push:
     branches:
-      - "master"
+      - "**"
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   compiler-tests:
@@ -48,20 +48,20 @@ jobs:
   integration-tests:
     if: github.event_name == 'pull_request'
     needs: compiler-tests
-    uses: phpstan/phpstan/.github/workflows/integration-tests.yml@master
+    uses: phpstan/phpstan/.github/workflows/integration-tests.yml@1.5.x
     with:
-      ref: master
+      ref: 1.5.x
 
   extension-tests:
     if: github.event_name == 'pull_request'
     needs: compiler-tests
-    uses: phpstan/phpstan/.github/workflows/extension-tests.yml@master
+    uses: phpstan/phpstan/.github/workflows/extension-tests.yml@1.5.x
     with:
-      ref: master
+      ref: 1.5.x
 
   other-tests:
     if: github.event_name == 'pull_request'
     needs: compiler-tests
-    uses: phpstan/phpstan/.github/workflows/other-tests.yml@master
+    uses: phpstan/phpstan/.github/workflows/other-tests.yml@1.5.x
     with:
-      ref: master
+      ref: 1.5.x
diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 136ef4969e..2c7ff7add9 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -8,12 +8,12 @@ on:
       - 'compiler/**'
   push:
     branches:
-      - "master"
+      - "**"
     paths-ignore:
       - 'compiler/**'
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   result-cache-e2e-tests:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 6c7afe5f5a..0d64be5317 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,10 +6,10 @@ on:
   pull_request:
   push:
     branches:
-      - "master"
+      - "**"
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   lint:
diff --git a/.github/workflows/phar.yml b/.github/workflows/phar.yml
index 678701860a..3952d78e56 100644
--- a/.github/workflows/phar.yml
+++ b/.github/workflows/phar.yml
@@ -5,9 +5,9 @@ name: "Compile PHAR"
 on:
   push:
     branches:
-      - "master"
+      - "1.5.x"
     tags:
-      - '1.*'
+      - '1.5.*'
 
 concurrency: phar
 
@@ -53,6 +53,7 @@ jobs:
           repository: phpstan/phpstan
           path: phpstan-dist
           token: ${{ secrets.PAT }}
+          ref: 1.5.x
 
       - name: "cp PHAR"
         run: cp tmp/phpstan.phar phpstan-dist/phpstan.phar
@@ -79,13 +80,13 @@ jobs:
           git config user.email "ondrej@mirtes.cz" && \
           git config user.name "Ondrej Mirtes"
 
-      - name: "Commit PHAR - master"
+      - name: "Commit PHAR - development"
         working-directory: phpstan-dist
         if: "!startsWith(github.ref, 'refs/tags/')"
         run: |
           git add phpstan.phar phpstan.phar.asc && \
           git commit -S -m "Updated PHPStan to commit ${{ github.event.after }}" -m "${{ steps.git-log.outputs.log }}" && \
-          git push --quiet origin master
+          git push --quiet origin 1.5.x
 
       - name: "Commit PHAR - tag"
         working-directory: phpstan-dist
@@ -93,6 +94,6 @@ jobs:
         run: |
           git add phpstan.phar phpstan.phar.asc && \
           git commit -S -m "PHPStan ${GITHUB_REF#refs/tags/}" -m "${{ steps.git-log.outputs.log }}" && \
-          git push --quiet origin master && \
+          git push --quiet origin 1.5.x && \
           git tag -s ${GITHUB_REF#refs/tags/} -m "${GITHUB_REF#refs/tags/}" && \
           git push --quiet origin ${GITHUB_REF#refs/tags/}
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 543254e867..7a2e880070 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -8,12 +8,12 @@ on:
       - 'compiler/**'
   push:
     branches:
-      - "master"
+      - "**"
     paths-ignore:
       - 'compiler/**'
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   static-analysis:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f9f0e8b07f..cfdbc37dfe 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,12 +8,12 @@ on:
       - 'compiler/**'
   push:
     branches:
-      - "master"
+      - "**"
     paths-ignore:
       - 'compiler/**'
 
 env:
-  COMPOSER_ROOT_VERSION: "1.4.x-dev"
+  COMPOSER_ROOT_VERSION: "1.5.x-dev"
 
 jobs:
   tests:
diff --git a/build-cs/composer.lock b/build-cs/composer.lock
index b787a5858a..475b81fba0 100644
--- a/build-cs/composer.lock
+++ b/build-cs/composer.lock
@@ -200,32 +200,32 @@
         },
         {
             "name": "slevomat/coding-standard",
-            "version": "7.0.18",
+            "version": "7.0.19",
             "source": {
                 "type": "git",
                 "url": "https://github.com/slevomat/coding-standard.git",
-                "reference": "b81ac84f41a4797dc25c8ede1b0718e2a74be0fc"
+                "reference": "bef66a43815bbf9b5f49775e9ded3f7c6ba0cc37"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/slevomat/coding-standard/zipball/b81ac84f41a4797dc25c8ede1b0718e2a74be0fc",
-                "reference": "b81ac84f41a4797dc25c8ede1b0718e2a74be0fc",
+                "url": "https://api.github.com/repos/slevomat/coding-standard/zipball/bef66a43815bbf9b5f49775e9ded3f7c6ba0cc37",
+                "reference": "bef66a43815bbf9b5f49775e9ded3f7c6ba0cc37",
                 "shasum": ""
             },
             "require": {
                 "dealerdirect/phpcodesniffer-composer-installer": "^0.6.2 || ^0.7",
                 "php": "^7.1 || ^8.0",
                 "phpstan/phpdoc-parser": "^1.0.0",
-                "squizlabs/php_codesniffer": "^3.6.1"
+                "squizlabs/php_codesniffer": "^3.6.2"
             },
             "require-dev": {
-                "phing/phing": "2.17.0",
-                "php-parallel-lint/php-parallel-lint": "1.3.1",
-                "phpstan/phpstan": "1.2.0",
+                "phing/phing": "2.17.2",
+                "php-parallel-lint/php-parallel-lint": "1.3.2",
+                "phpstan/phpstan": "1.4.6",
                 "phpstan/phpstan-deprecation-rules": "1.0.0",
                 "phpstan/phpstan-phpunit": "1.0.0",
                 "phpstan/phpstan-strict-rules": "1.1.0",
-                "phpunit/phpunit": "7.5.20|8.5.21|9.5.10"
+                "phpunit/phpunit": "7.5.20|8.5.21|9.5.16"
             },
             "type": "phpcodesniffer-standard",
             "extra": {
@@ -245,7 +245,7 @@
             "description": "Slevomat Coding Standard for PHP_CodeSniffer complements Consistence Coding Standard by providing sniffs with additional checks.",
             "support": {
                 "issues": "https://github.com/slevomat/coding-standard/issues",
-                "source": "https://github.com/slevomat/coding-standard/tree/7.0.18"
+                "source": "https://github.com/slevomat/coding-standard/tree/7.0.19"
             },
             "funding": [
                 {
@@ -257,7 +257,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-12-07T17:19:06+00:00"
+            "time": "2022-03-01T18:01:41+00:00"
         },
         {
             "name": "squizlabs/php_codesniffer",
diff --git a/compiler/composer.lock b/compiler/composer.lock
index 399d42395f..30074d1e1e 100644
--- a/compiler/composer.lock
+++ b/compiler/composer.lock
@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "nette/neon",
-            "version": "v3.3.2",
+            "version": "v3.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/neon.git",
-                "reference": "54b287d8c2cdbe577b02e28ca1713e275b05ece2"
+                "reference": "22e384da162fab42961d48eb06c06d3ad0c11b95"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/neon/zipball/54b287d8c2cdbe577b02e28ca1713e275b05ece2",
-                "reference": "54b287d8c2cdbe577b02e28ca1713e275b05ece2",
+                "url": "https://api.github.com/repos/nette/neon/zipball/22e384da162fab42961d48eb06c06d3ad0c11b95",
+                "reference": "22e384da162fab42961d48eb06c06d3ad0c11b95",
                 "shasum": ""
             },
             "require": {
@@ -70,9 +70,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nette/neon/issues",
-                "source": "https://github.com/nette/neon/tree/v3.3.2"
+                "source": "https://github.com/nette/neon/tree/v3.3.3"
             },
-            "time": "2021-11-25T15:57:41+00:00"
+            "time": "2022-03-10T02:04:26+00:00"
         },
         {
             "name": "psr/container",
@@ -129,16 +129,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v6.0.3",
+            "version": "v6.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "22e8efd019c3270c4f79376234a3f8752cd25490"
+                "reference": "3bebf4108b9e07492a2a4057d207aa5a77d146b1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/22e8efd019c3270c4f79376234a3f8752cd25490",
-                "reference": "22e8efd019c3270c4f79376234a3f8752cd25490",
+                "url": "https://api.github.com/repos/symfony/console/zipball/3bebf4108b9e07492a2a4057d207aa5a77d146b1",
+                "reference": "3bebf4108b9e07492a2a4057d207aa5a77d146b1",
                 "shasum": ""
             },
             "require": {
@@ -204,7 +204,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v6.0.3"
+                "source": "https://github.com/symfony/console/tree/v6.0.5"
             },
             "funding": [
                 {
@@ -220,20 +220,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-26T17:23:29+00:00"
+            "time": "2022-02-25T10:48:52+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v6.0.3",
+            "version": "v6.0.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "6ae49c4fda17322171a2b8dc5f70bc6edbc498e1"
+                "reference": "52b888523545b0b4049ab9ce48766802484d7046"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/6ae49c4fda17322171a2b8dc5f70bc6edbc498e1",
-                "reference": "6ae49c4fda17322171a2b8dc5f70bc6edbc498e1",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/52b888523545b0b4049ab9ce48766802484d7046",
+                "reference": "52b888523545b0b4049ab9ce48766802484d7046",
                 "shasum": ""
             },
             "require": {
@@ -267,7 +267,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v6.0.3"
+                "source": "https://github.com/symfony/filesystem/tree/v6.0.6"
             },
             "funding": [
                 {
@@ -283,7 +283,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-02T09:55:41+00:00"
+            "time": "2022-03-02T12:58:14+00:00"
         },
         {
             "name": "symfony/finder",
@@ -348,7 +348,7 @@
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
@@ -380,12 +380,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -410,7 +410,7 @@
                 "portable"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -430,7 +430,7 @@
         },
         {
             "name": "symfony/polyfill-intl-grapheme",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-grapheme.git",
@@ -459,12 +459,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Grapheme\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Grapheme\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -491,7 +491,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-intl-grapheme/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-intl-grapheme/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -511,7 +511,7 @@
         },
         {
             "name": "symfony/polyfill-intl-normalizer",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
@@ -540,12 +540,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -575,7 +575,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-intl-normalizer/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-intl-normalizer/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -595,7 +595,7 @@
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
@@ -627,12 +627,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Mbstring\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -658,7 +658,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -678,16 +678,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v6.0.3",
+            "version": "v6.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "298ed357274c1868c20a0061df256a1250a6c4af"
+                "reference": "1ccceccc6497e96f4f646218f04b97ae7d9fa7a1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/298ed357274c1868c20a0061df256a1250a6c4af",
-                "reference": "298ed357274c1868c20a0061df256a1250a6c4af",
+                "url": "https://api.github.com/repos/symfony/process/zipball/1ccceccc6497e96f4f646218f04b97ae7d9fa7a1",
+                "reference": "1ccceccc6497e96f4f646218f04b97ae7d9fa7a1",
                 "shasum": ""
             },
             "require": {
@@ -719,7 +719,7 @@
             "description": "Executes commands in sub-processes",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/process/tree/v6.0.3"
+                "source": "https://github.com/symfony/process/tree/v6.0.5"
             },
             "funding": [
                 {
@@ -735,7 +735,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-26T17:23:29+00:00"
+            "time": "2022-01-30T18:19:12+00:00"
         },
         {
             "name": "symfony/service-contracts",
@@ -851,12 +851,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\String\\": ""
-                },
                 "files": [
                     "Resources/functions.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Component\\String\\": ""
+                },
                 "exclude-from-classmap": [
                     "/Tests/"
                 ]
@@ -908,29 +908,30 @@
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
-            "version": "1.4.0",
+            "version": "1.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b"
+                "reference": "10dcfce151b967d20fde1b34ae6640712c3891bc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/d56bf6102915de5702778fe20f2de3b2fe570b5b",
-                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/10dcfce151b967d20fde1b34ae6640712c3891bc",
+                "reference": "10dcfce151b967d20fde1b34ae6640712c3891bc",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^8.0",
+                "doctrine/coding-standard": "^9",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpbench/phpbench": "^0.13 || 1.0.0-alpha2",
-                "phpstan/phpstan": "^0.12",
-                "phpstan/phpstan-phpunit": "^0.12",
-                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
+                "phpbench/phpbench": "^0.16 || ^1",
+                "phpstan/phpstan": "^1.4",
+                "phpstan/phpstan-phpunit": "^1",
+                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
+                "vimeo/psalm": "^4.22"
             },
             "type": "library",
             "autoload": {
@@ -957,7 +958,7 @@
             ],
             "support": {
                 "issues": "https://github.com/doctrine/instantiator/issues",
-                "source": "https://github.com/doctrine/instantiator/tree/1.4.0"
+                "source": "https://github.com/doctrine/instantiator/tree/1.4.1"
             },
             "funding": [
                 {
@@ -973,38 +974,42 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-11-10T18:47:58+00:00"
+            "time": "2022-03-03T08:28:38+00:00"
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.10.2",
+            "version": "1.11.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220"
+                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/776f831124e9c62e1a2c601ecc52e776d8bb7220",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/14daed4296fae74d9e3201d2c4925d1acb7aa614",
+                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0"
             },
+            "conflict": {
+                "doctrine/collections": "<1.6.8",
+                "doctrine/common": "<2.13.3 || >=3,<3.2.2"
+            },
             "require-dev": {
-                "doctrine/collections": "^1.0",
-                "doctrine/common": "^2.6",
-                "phpunit/phpunit": "^7.1"
+                "doctrine/collections": "^1.6.8",
+                "doctrine/common": "^2.13.3 || ^3.2.2",
+                "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "DeepCopy\\": "src/DeepCopy/"
-                },
                 "files": [
                     "src/DeepCopy/deep_copy.php"
-                ]
+                ],
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -1020,7 +1025,7 @@
             ],
             "support": {
                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.10.2"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.0"
             },
             "funding": [
                 {
@@ -1028,7 +1033,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-11-13T09:40:50+00:00"
+            "time": "2022-03-03T13:19:32+00:00"
         },
         {
             "name": "nikic/php-parser",
@@ -1148,16 +1153,16 @@
         },
         {
             "name": "phar-io/version",
-            "version": "3.1.0",
+            "version": "3.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/version.git",
-                "reference": "bae7c545bef187884426f042434e561ab1ddb182"
+                "reference": "4f7fd7836c6f332bb2933569e566a0d6c4cbed74"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/version/zipball/bae7c545bef187884426f042434e561ab1ddb182",
-                "reference": "bae7c545bef187884426f042434e561ab1ddb182",
+                "url": "https://api.github.com/repos/phar-io/version/zipball/4f7fd7836c6f332bb2933569e566a0d6c4cbed74",
+                "reference": "4f7fd7836c6f332bb2933569e566a0d6c4cbed74",
                 "shasum": ""
             },
             "require": {
@@ -1193,9 +1198,9 @@
             "description": "Library for handling version information and constraints",
             "support": {
                 "issues": "https://github.com/phar-io/version/issues",
-                "source": "https://github.com/phar-io/version/tree/3.1.0"
+                "source": "https://github.com/phar-io/version/tree/3.2.1"
             },
-            "time": "2021-02-23T14:00:09+00:00"
+            "time": "2022-02-21T01:04:05+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -1545,16 +1550,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.10",
+            "version": "9.2.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687"
+                "reference": "2e9da11878c4202f97915c1cb4bb1ca318a63f5f"
             },
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                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/d5850aaf931743067f4bfc1ae4cbd06468400687",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/2e9da11878c4202f97915c1cb4bb1ca318a63f5f",
+                "reference": "2e9da11878c4202f97915c1cb4bb1ca318a63f5f",
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             "require": {
@@ -1610,7 +1615,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.10"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.15"
             },
             "funding": [
                 {
@@ -1618,7 +1623,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-12-05T09:12:13+00:00"
+            "time": "2022-03-07T09:28:20+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -1863,16 +1868,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.13",
+            "version": "9.5.18",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743"
+                "reference": "1b5856028273bfd855e60a887278857d872ec67a"
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-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/1b5856028273bfd855e60a887278857d872ec67a",
+                "reference": "1b5856028273bfd855e60a887278857d872ec67a",
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@@ -1888,7 +1893,7 @@
                 "phar-io/version": "^3.0.2",
                 "php": ">=7.3",
                 "phpspec/prophecy": "^1.12.1",
-                "phpunit/php-code-coverage": "^9.2.7",
+                "phpunit/php-code-coverage": "^9.2.13",
                 "phpunit/php-file-iterator": "^3.0.5",
                 "phpunit/php-invoker": "^3.1.1",
                 "phpunit/php-text-template": "^2.0.3",
@@ -1923,11 +1928,11 @@
                 }
             },
             "autoload": {
-                "classmap": [
-                    "src/"
-                ],
                 "files": [
                     "src/Framework/Assert/Functions.php"
+                ],
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -1950,7 +1955,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.13"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.18"
             },
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                 {
@@ -1962,7 +1967,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-01-24T07:33:35+00:00"
+            "time": "2022-03-08T06:52:28+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -2470,16 +2475,16 @@
         },
         {
             "name": "sebastian/global-state",
-            "version": "5.0.3",
+            "version": "5.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "23bd5951f7ff26f12d4e3242864df3e08dec4e49"
+                "reference": "0ca8db5a5fc9c8646244e629625ac486fa286bf2"
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-                "reference": "23bd5951f7ff26f12d4e3242864df3e08dec4e49",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/0ca8db5a5fc9c8646244e629625ac486fa286bf2",
+                "reference": "0ca8db5a5fc9c8646244e629625ac486fa286bf2",
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@@ -2522,7 +2527,7 @@
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                 "issues": "https://github.com/sebastianbergmann/global-state/issues",
-                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.3"
+                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.5"
             },
             "funding": [
                 {
@@ -2530,7 +2535,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-06-11T13:31:12+00:00"
+            "time": "2022-02-14T08:28:10+00:00"
         },
         {
             "name": "sebastian/lines-of-code",
diff --git a/composer.json b/composer.json
index f9943dc0ee..45c70f5f28 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
 		"hoa/exception": "^1.0",
 		"hoa/regex": "1.17.01.13",
 		"jean85/pretty-package-versions": "^1.0.3",
-		"jetbrains/phpstorm-stubs": "dev-master#248e61f4d4a8bee1348facc98fecbd4bc41984f1",
+		"jetbrains/phpstorm-stubs": "dev-master#25c2ba4791d7c08e62aae0793336694ea4fd424a",
 		"nette/bootstrap": "^3.0",
 		"nette/di": "^3.0.11",
 		"nette/finder": "^2.5",
@@ -24,7 +24,7 @@
 		"nikic/php-parser": "^4.13.2",
 		"ondram/ci-detector": "^3.4.0",
 		"ondrejmirtes/better-reflection": "5.0.7.2",
-		"phpstan/php-8-stubs": "0.1.48",
+		"phpstan/php-8-stubs": "0.1.49",
 		"phpstan/phpdoc-parser": "^1.2.0",
 		"react/child-process": "^0.6.4",
 		"react/event-loop": "^1.2",
@@ -73,9 +73,6 @@
 		}
 	},
 	"extra": {
-		"branch-alias": {
-			"dev-master": "1.4-dev"
-		},
 		"patcher": {
 			"search": "patches"
 		}
diff --git a/composer.lock b/composer.lock
index 3497da7b42..1f89e62581 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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         "This file is @generated automatically"
     ],
-    "content-hash": "ede0704e050d946882afd2613bdbb349",
+    "content-hash": "317daa3b733dc326442f1c6bd70a8333",
     "packages": [
         {
             "name": "clue/block-react",
@@ -1432,12 +1432,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/JetBrains/phpstorm-stubs.git",
-                "reference": "248e61f4d4a8bee1348facc98fecbd4bc41984f1"
+                "reference": "25c2ba4791d7c08e62aae0793336694ea4fd424a"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/JetBrains/phpstorm-stubs/zipball/248e61f4d4a8bee1348facc98fecbd4bc41984f1",
-                "reference": "248e61f4d4a8bee1348facc98fecbd4bc41984f1",
+                "url": "https://api.github.com/repos/JetBrains/phpstorm-stubs/zipball/25c2ba4791d7c08e62aae0793336694ea4fd424a",
+                "reference": "25c2ba4791d7c08e62aae0793336694ea4fd424a",
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             "require-dev": {
@@ -1473,7 +1473,7 @@
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                 "source": "https://github.com/JetBrains/phpstorm-stubs/tree/master"
             },
-            "time": "2022-03-07T17:51:23+00:00"
+            "time": "2022-03-15T14:13:43+00:00"
         },
         {
             "name": "nette/bootstrap",
@@ -2248,16 +2248,16 @@
         },
         {
             "name": "phpstan/php-8-stubs",
-            "version": "0.1.48",
+            "version": "0.1.49",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/php-8-stubs.git",
-                "reference": "6fc5082cf5a2d629c54543c4067d3fe6e68c6f8e"
+                "reference": "095a11fc8ba747bd200fc91701ef1c824818bf49"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/php-8-stubs/zipball/6fc5082cf5a2d629c54543c4067d3fe6e68c6f8e",
-                "reference": "6fc5082cf5a2d629c54543c4067d3fe6e68c6f8e",
+                "url": "https://api.github.com/repos/phpstan/php-8-stubs/zipball/095a11fc8ba747bd200fc91701ef1c824818bf49",
+                "reference": "095a11fc8ba747bd200fc91701ef1c824818bf49",
                 "shasum": ""
             },
             "type": "library",
@@ -2274,9 +2274,9 @@
             "description": "PHP stubs extracted from php-src",
             "support": {
                 "issues": "https://github.com/phpstan/php-8-stubs/issues",
-                "source": "https://github.com/phpstan/php-8-stubs/tree/0.1.48"
+                "source": "https://github.com/phpstan/php-8-stubs/tree/0.1.49"
             },
-            "time": "2022-03-10T00:11:46+00:00"
+            "time": "2022-03-11T00:14:16+00:00"
         },
         {
             "name": "phpstan/phpdoc-parser",
@@ -2907,12 +2907,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "React\\Promise\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -2962,12 +2962,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\Stream\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "React\\Promise\\Stream\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3045,12 +3045,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\Timer\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "React\\Promise\\Timer\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3301,12 +3301,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "RingCentral\\Psr7\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "RingCentral\\Psr7\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3594,12 +3594,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3673,12 +3673,12 @@
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             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Grapheme\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Grapheme\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3754,12 +3754,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -3841,12 +3841,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Mbstring\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3918,12 +3918,12 @@
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             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php72\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3994,12 +3994,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php73\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php73\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -4073,12 +4073,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php74\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php74\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -4153,12 +4153,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php80\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php80\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -4386,12 +4386,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\String\\": ""
-                },
                 "files": [
                     "Resources/functions.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Component\\String\\": ""
+                },
                 "exclude-from-classmap": [
                     "/Tests/"
                 ]
@@ -4670,12 +4670,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "DeepCopy\\": "src/DeepCopy/"
-                },
                 "files": [
                     "src/DeepCopy/deep_copy.php"
-                ]
+                ],
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -5799,11 +5799,11 @@
                 }
             },
             "autoload": {
-                "classmap": [
-                    "src/"
-                ],
                 "files": [
                     "src/Framework/Assert/Functions.php"
+                ],
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
diff --git a/conf/config.level5.neon b/conf/config.level5.neon
index c890be88ec..c6d7885f59 100644
--- a/conf/config.level5.neon
+++ b/conf/config.level5.neon
@@ -8,6 +8,7 @@ parameters:
 rules:
 	- PHPStan\Rules\DateTimeInstantiationRule
 	- PHPStan\Rules\Functions\ImplodeFunctionRule
+	- PHPStan\Rules\Functions\ArrayFilterEmptyRule
 
 services:
 	-
diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
index 7bdd515031..ffe61015bc 100644
--- a/src/Analyser/MutatingScope.php
+++ b/src/Analyser/MutatingScope.php
@@ -2660,7 +2660,14 @@ private function resolveType(Expr $node): Type
 					continue;
 				}
 
-				return $dynamicFunctionReturnTypeExtension->getTypeFromFunctionCall($functionReflection, $node, $this);
+				$resolvedType = $dynamicFunctionReturnTypeExtension->getTypeFromFunctionCall(
+					$functionReflection,
+					$node,
+					$this,
+				);
+				if ($resolvedType !== null) {
+					return $resolvedType;
+				}
 			}
 
 			return ParametersAcceptorSelector::selectFromArgs(
@@ -5659,7 +5666,16 @@ private function exactInstantiation(New_ $node, string $className): ?Type
 				continue;
 			}
 
-			$resolvedTypes[] = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall($constructorMethod, $methodCall, $this);
+			$resolvedType = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall(
+				$constructorMethod,
+				$methodCall,
+				$this,
+			);
+			if ($resolvedType === null) {
+				continue;
+			}
+
+			$resolvedTypes[] = $resolvedType;
 		}
 
 		if (count($resolvedTypes) > 0) {
@@ -5835,7 +5851,12 @@ private function methodCallReturnType(Type $typeWithMethod, string $methodName,
 						continue;
 					}
 
-					$resolvedTypes[] = $dynamicMethodReturnTypeExtension->getTypeFromMethodCall($methodReflection, $methodCall, $this);
+					$resolvedType = $dynamicMethodReturnTypeExtension->getTypeFromMethodCall($methodReflection, $methodCall, $this);
+					if ($resolvedType === null) {
+						continue;
+					}
+
+					$resolvedTypes[] = $resolvedType;
 				}
 			} else {
 				foreach ($this->dynamicReturnTypeExtensionRegistry->getDynamicStaticMethodReturnTypeExtensionsForClass($className) as $dynamicStaticMethodReturnTypeExtension) {
@@ -5843,7 +5864,16 @@ private function methodCallReturnType(Type $typeWithMethod, string $methodName,
 						continue;
 					}
 
-					$resolvedTypes[] = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall($methodReflection, $methodCall, $this);
+					$resolvedType = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall(
+						$methodReflection,
+						$methodCall,
+						$this,
+					);
+					if ($resolvedType === null) {
+						continue;
+					}
+
+					$resolvedTypes[] = $resolvedType;
 				}
 			}
 		}
diff --git a/src/Command/AnalyseApplication.php b/src/Command/AnalyseApplication.php
index 8e175c7725..73aab3de3e 100644
--- a/src/Command/AnalyseApplication.php
+++ b/src/Command/AnalyseApplication.php
@@ -7,11 +7,13 @@
 use PHPStan\Analyser\ResultCache\ResultCacheManagerFactory;
 use PHPStan\Internal\BytesHelper;
 use PHPStan\PhpDoc\StubValidator;
+use PHPStan\ShouldNotHappenException;
 use Symfony\Component\Console\Input\InputInterface;
 use function array_merge;
 use function count;
 use function is_string;
 use function memory_get_peak_usage;
+use function microtime;
 use function sprintf;
 
 class AnalyseApplication
@@ -148,15 +150,21 @@ private function runAnalyser(
 				$errorOutput->getStyle()->progressAdvance($step);
 			};
 		} else {
-			$preFileCallback = static function (string $file) use ($stdOutput): void {
+			$startTime = null;
+			$preFileCallback = static function (string $file) use ($stdOutput, &$startTime): void {
 				$stdOutput->writeLineFormatted($file);
+				$startTime = microtime(true);
 			};
 			$postFileCallback = null;
 			if ($stdOutput->isDebug()) {
 				$previousMemory = memory_get_peak_usage(true);
-				$postFileCallback = static function () use ($stdOutput, &$previousMemory): void {
+				$postFileCallback = static function () use ($stdOutput, &$previousMemory, &$startTime): void {
+					if ($startTime === null) {
+						throw new ShouldNotHappenException();
+					}
 					$currentTotalMemory = memory_get_peak_usage(true);
-					$stdOutput->writeLineFormatted(sprintf('--- consumed %s, total %s', BytesHelper::bytes($currentTotalMemory - $previousMemory), BytesHelper::bytes($currentTotalMemory)));
+					$elapsedTime = microtime(true) - $startTime;
+					$stdOutput->writeLineFormatted(sprintf('--- consumed %s, total %s, took %.2f s', BytesHelper::bytes($currentTotalMemory - $previousMemory), BytesHelper::bytes($currentTotalMemory), $elapsedTime));
 					$previousMemory = $currentTotalMemory;
 				};
 			}
diff --git a/src/Rules/Functions/ArrayFilterEmptyRule.php b/src/Rules/Functions/ArrayFilterEmptyRule.php
new file mode 100644
index 0000000000..798324e5b3
--- /dev/null
+++ b/src/Rules/Functions/ArrayFilterEmptyRule.php
@@ -0,0 +1,63 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Rules\Functions;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+class ArrayFilterEmptyRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (strtolower($this->reflectionProvider->resolveFunctionName($node->name, $scope)) !== 'array_filter') {
+			return [];
+		}
+
+		$args = $node->getArgs();
+		if (count($args) !== 1) {
+			return [];
+		}
+
+		$arrayType = $scope->getType($args[0]->value);
+		$falsyType = StaticTypeFactory::falsey();
+
+		if ($falsyType->isSuperTypeOf($arrayType->getIterableValueType())->no()) {
+			$message = 'Parameter #1 $array (%s) to function array_filter cannot contain empty values, call has no effect.';
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$message,
+					$arrayType->describe(VerbosityLevel::value()),
+				))->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Type/DynamicFunctionReturnTypeExtension.php b/src/Type/DynamicFunctionReturnTypeExtension.php
index ac4750ce53..92941735a3 100644
--- a/src/Type/DynamicFunctionReturnTypeExtension.php
+++ b/src/Type/DynamicFunctionReturnTypeExtension.php
@@ -12,6 +12,6 @@ interface DynamicFunctionReturnTypeExtension
 
 	public function isFunctionSupported(FunctionReflection $functionReflection): bool;
 
-	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type;
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type;
 
 }
diff --git a/src/Type/DynamicMethodReturnTypeExtension.php b/src/Type/DynamicMethodReturnTypeExtension.php
index 58635acca7..35f5b505ca 100644
--- a/src/Type/DynamicMethodReturnTypeExtension.php
+++ b/src/Type/DynamicMethodReturnTypeExtension.php
@@ -14,6 +14,6 @@ public function getClass(): string;
 
 	public function isMethodSupported(MethodReflection $methodReflection): bool;
 
-	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type;
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type;
 
 }
diff --git a/src/Type/DynamicStaticMethodReturnTypeExtension.php b/src/Type/DynamicStaticMethodReturnTypeExtension.php
index e2de530f9f..94560039a6 100644
--- a/src/Type/DynamicStaticMethodReturnTypeExtension.php
+++ b/src/Type/DynamicStaticMethodReturnTypeExtension.php
@@ -14,6 +14,6 @@ public function getClass(): string;
 
 	public function isStaticMethodSupported(MethodReflection $methodReflection): bool;
 
-	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): Type;
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type;
 
 }
diff --git a/tests/PHPStan/Rules/Exceptions/CatchWithUnthrownExceptionRuleTest.php b/tests/PHPStan/Rules/Exceptions/CatchWithUnthrownExceptionRuleTest.php
index 80fe132f33..ea8625fb5f 100644
--- a/tests/PHPStan/Rules/Exceptions/CatchWithUnthrownExceptionRuleTest.php
+++ b/tests/PHPStan/Rules/Exceptions/CatchWithUnthrownExceptionRuleTest.php
@@ -276,15 +276,15 @@ public function testBug6791(): void
 		$this->analyse([__DIR__ . '/data/bug-6791.php'], [
 			[
 				'Dead catch - TypeError is never thrown in the try block.',
-				17,
+				22,
 			],
 			[
 				'Dead catch - TypeError is never thrown in the try block.',
-				29,
+				34,
 			],
 			[
 				'Dead catch - TypeError is never thrown in the try block.',
-				33,
+				38,
 			],
 		]);
 	}
diff --git a/tests/PHPStan/Rules/Exceptions/data/bug-6791.php b/tests/PHPStan/Rules/Exceptions/data/bug-6791.php
index 84a2eacfcd..e02f88031a 100644
--- a/tests/PHPStan/Rules/Exceptions/data/bug-6791.php
+++ b/tests/PHPStan/Rules/Exceptions/data/bug-6791.php
@@ -11,24 +11,33 @@ class Foo {
 	public $array;
 }
 
-$foo = new Foo();
-try {
-	$foo->intArray = ["a"];
-} catch (\TypeError $e) {}
-
-try {
-	$foo->set = ["a"];
-} catch (\TypeError $e) {}
-
-try {
-	$foo->set = new \Ds\Set;
-} catch (\TypeError $e) {}
-
-try {
-	$foo->array = ["a"];
-} catch (\TypeError $e) {}
-
-try {
-	$foo->array = "non-array";
-} catch (\TypeError $e) {}
+class Bar
+{
+
+	public function doFoo()
+	{
+		$foo = new Foo();
+		try {
+			$foo->intArray = ["a"];
+		} catch (\TypeError $e) {}
+
+		try {
+			$foo->set = ["a"];
+		} catch (\TypeError $e) {}
+
+		try {
+			$foo->set = new \Ds\Set;
+		} catch (\TypeError $e) {}
+
+		try {
+			$foo->array = ["a"];
+		} catch (\TypeError $e) {}
+
+		try {
+			$foo->array = "non-array";
+		} catch (\TypeError $e) {}
+	}
+
+}
+
 
diff --git a/tests/PHPStan/Rules/Functions/ArrayFilterEmptyRuleTest.php b/tests/PHPStan/Rules/Functions/ArrayFilterEmptyRuleTest.php
new file mode 100644
index 0000000000..2c0d8c4e70
--- /dev/null
+++ b/tests/PHPStan/Rules/Functions/ArrayFilterEmptyRuleTest.php
@@ -0,0 +1,47 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Rules\Functions;
+
+use PHPStan\Rules\Rule;
+use PHPStan\Testing\RuleTestCase;
+
+/**
+ * @extends RuleTestCase<ArrayFilterEmptyRule>
+ */
+class ArrayFilterEmptyRuleTest extends RuleTestCase
+{
+
+	protected function getRule(): Rule
+	{
+		return new ArrayFilterEmptyRule($this->createReflectionProvider());
+	}
+
+	public function testFile(): void
+	{
+		$expectedErrors = [
+			[
+				'Parameter #1 $array (array{1, 3}) to function array_filter cannot contain empty values, call has no effect.',
+				10,
+			],
+			[
+				'Parameter #1 $array (array{\'test\'}) to function array_filter cannot contain empty values, call has no effect.',
+				11,
+			],
+			[
+				'Parameter #1 $array (array{true, true}) to function array_filter cannot contain empty values, call has no effect.',
+				17,
+			],
+			[
+				'Parameter #1 $array (array{stdClass}) to function array_filter cannot contain empty values, call has no effect.',
+				18,
+			],
+			[
+				'Parameter #1 $array (array<stdClass>) to function array_filter cannot contain empty values, call has no effect.',
+				20,
+			],
+		];
+
+		$this->analyse([__DIR__ . '/data/array_filter_empty.php'], $expectedErrors);
+	}
+
+}
diff --git a/tests/PHPStan/Rules/Functions/data/array_filter_empty.php b/tests/PHPStan/Rules/Functions/data/array_filter_empty.php
new file mode 100644
index 0000000000..58d187f097
--- /dev/null
+++ b/tests/PHPStan/Rules/Functions/data/array_filter_empty.php
@@ -0,0 +1,21 @@
+<?php
+
+/** @var \stdClass[] $objects */
+$objects = [];
+/** @var array<\stdClass|null> $objectsOrNull */
+$objectsOrNull = [];
+
+array_filter([0]);
+array_filter([0,1,3]);
+array_filter([1,3]);
+array_filter(['test']);
+array_filter(['', 'test']);
+array_filter([null]);
+array_filter([null, 'test']);
+array_filter([false, 'test']);
+array_filter([true, false]);
+array_filter([true, true]);
+array_filter([new \stdClass()]);
+array_filter([new \stdClass(), null]);
+array_filter($objects);
+array_filter($objectsOrNull);