From 5ca060814bffa623e285d793becf4394dc87e6c5 Mon Sep 17 00:00:00 2001
From: Markus Staab <maggus.staab@googlemail.com>
Date: Sat, 13 Jun 2026 09:24:10 +0200
Subject: [PATCH 1/3] Setup PHPStan

---
 .github/CONTRIBUTING.md          |  29 ++-
 .github/workflows/integrate.yaml |  43 +++++
 Makefile                         |  10 +-
 composer.json                    |   8 +-
 composer.lock                    | 170 +++++++++++++++++-
 phpstan-baseline.neon            | 295 +++++++++++++++++++++++++++++++
 phpstan.neon.dist                |  13 ++
 7 files changed, 564 insertions(+), 4 deletions(-)
 create mode 100644 phpstan-baseline.neon
 create mode 100644 phpstan.neon.dist

diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index c00267ff51..28456451f9 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -74,6 +74,19 @@ about what you're working on, you can contact us via the
   ```
 
   to automatically fix coding standard issues.
+- Run
+
+  ```shell
+  make static-analysis
+  ```
+
+  to run a static analysis or, if applicable, run
+
+  ```shell
+  make static-analysis-baseline
+  ```
+
+  to regenerate the baseline.
 - Review the change once more just before submitting it.
 
 ## What happens after submitting contribution?
@@ -134,6 +147,20 @@ Having said that, here are the organizational rules:
    make coding-standards
    ```
 
-6. Use reasonable commit messages.
+6. Run
+
+  ```shell
+  make static-analysis
+  ```
+
+to run a static analysis or, if applicable, run
+
+  ```shell
+  make static-analysis-baseline
+  ```
+
+to regenerate the baseline.
+
+7. Use reasonable commit messages.
 
 Thank you for contributing to https://www.php.net!
diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index 021babda87..be23042795 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -107,6 +107,49 @@ jobs:
       - name: "Validate XML files"
         run: "for a in $(find . -name '*.xml'); do xmllint --quiet --noout $a; done"
 
+  static-analysis:
+    name: "Static Analysis"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.2"
+
+        dependencies:
+          - "locked"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          extensions: "none, curl, dom, json, mbstring, tokenizer, xml, xmlwriter, iconv"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Set up problem matchers for PHP"
+        run: "echo \"::add-matcher::${{ runner.tool_cache }}/php.json\""
+
+      - name: "Determine composer cache directory"
+        run: "echo \"COMPOSER_CACHE_DIR=$(composer config cache-dir)\" >> $GITHUB_ENV"
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v3"
+        with:
+          path: "${{ env.COMPOSER_CACHE_DIR }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-"
+
+      - name: "Install dependencies with composer"
+        run: "composer install --ansi --no-interaction --no-progress"
+
+      - name: "Run static analysis"
+        run: "vendor/bin/phpstan"
+
   tests:
     name: "Tests"
 
diff --git a/Makefile b/Makefile
index 12de398fe1..724f253731 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ HTTP_HOST:=localhost:8080
 CORES?=$(shell (nproc  || sysctl -n hw.ncpu) 2> /dev/null)
 
 .PHONY: it
-it: coding-standards tests ## Runs all the targets
+it: coding-standards static-analysis tests ## Runs all the targets
 
 .PHONY: code-coverage
 code-coverage: vendor ## Collects code coverage from running unit tests with phpunit/phpunit
@@ -18,6 +18,14 @@ coding-standards: vendor ## Fixes code style issues with friendsofphp/php-cs-fix
 help: ## Displays this list of targets with descriptions
 	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-30s\033[0m %s\n", $$1, $$2}'
 
+.PHONY: static-analysis
+static-analysis: vendor ## Runs a static code analysis
+	vendor/bin/phpstan
+
+.PHONY: static-analysis-baseline
+static-analysis-baseline: vendor ## Generates a baseline for static analysis
+	vendor/bin/phpstan --generate-baseline
+
 .PHONY: tests
 tests: vendor ## Runs unit and end-to-end tests with phpunit/phpunit
 	vendor/bin/phpunit --configuration=tests/phpunit.xml --testsuite=unit
diff --git a/composer.json b/composer.json
index 3dab8c84cc..1c9de76f5c 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,9 @@
     "require-dev": {
         "ext-curl": "*",
         "friendsofphp/php-cs-fixer": "^3.95.4",
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan": "^2.2",
+        "phpstan/phpstan-phpunit": "^2.0",
         "phpunit/phpunit": "^11.5.50"
     },
     "autoload": {
@@ -29,6 +32,9 @@
         "platform": {
             "php": "8.2.0"
         },
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }
diff --git a/composer.lock b/composer.lock
index 89ea0775ae..aab04bc5ad 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "280fe9d13360b92d08e3f0620566e9e1",
+    "content-hash": "1555eebf763d2b29f05d186dc8d3146c",
     "packages": [],
     "packages-dev": [
         {
@@ -811,6 +811,174 @@
             },
             "time": "2022-02-21T01:04:05+00:00"
         },
+        {
+            "name": "phpstan/extension-installer",
+            "version": "1.4.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/extension-installer.git",
+                "reference": "85e90b3942d06b2326fba0403ec24fe912372936"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/extension-installer/zipball/85e90b3942d06b2326fba0403ec24fe912372936",
+                "reference": "85e90b3942d06b2326fba0403ec24fe912372936",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^2.0",
+                "php": "^7.2 || ^8.0",
+                "phpstan/phpstan": "^1.9.0 || ^2.0"
+            },
+            "require-dev": {
+                "composer/composer": "^2.0",
+                "php-parallel-lint/php-parallel-lint": "^1.2.0",
+                "phpstan/phpstan-strict-rules": "^0.11 || ^0.12 || ^1.0"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "PHPStan\\ExtensionInstaller\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\ExtensionInstaller\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Composer plugin for automatic installation of PHPStan extensions",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "issues": "https://github.com/phpstan/extension-installer/issues",
+                "source": "https://github.com/phpstan/extension-installer/tree/1.4.3"
+            },
+            "time": "2024-09-04T20:21:43+00:00"
+        },
+        {
+            "name": "phpstan/phpstan",
+            "version": "2.2.2",
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/e5cc34d491a90e79c216d824f60fe21fd4d93bd6",
+                "reference": "e5cc34d491a90e79c216d824f60fe21fd4d93bd6",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ondřej Mirtes"
+                },
+                {
+                    "name": "Markus Staab"
+                },
+                {
+                    "name": "Vincent Langlet"
+                }
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                }
+            ],
+            "time": "2026-06-05T09:00:01+00:00"
+        },
+        {
+            "name": "phpstan/phpstan-phpunit",
+            "version": "2.0.16",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan-phpunit.git",
+                "reference": "6ab598e1bc106e6827fd346ae4a12b4a5d634c32"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan-phpunit/zipball/6ab598e1bc106e6827fd346ae4a12b4a5d634c32",
+                "reference": "6ab598e1bc106e6827fd346ae4a12b4a5d634c32",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4 || ^8.0",
+                "phpstan/phpstan": "^2.1.32"
+            },
+            "conflict": {
+                "phpunit/phpunit": "<7.0"
+            },
+            "require-dev": {
+                "nikic/php-parser": "^5",
+                "php-parallel-lint/php-parallel-lint": "^1.2",
+                "phpstan/phpstan-deprecation-rules": "^2.0",
+                "phpstan/phpstan-strict-rules": "^2.0",
+                "phpunit/phpunit": "^9.6"
+            },
+            "type": "phpstan-extension",
+            "extra": {
+                "phpstan": {
+                    "includes": [
+                        "extension.neon",
+                        "rules.neon"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPUnit extensions and rules for PHPStan",
+            "keywords": [
+                "static analysis"
+            ],
+            "support": {
+                "issues": "https://github.com/phpstan/phpstan-phpunit/issues",
+                "source": "https://github.com/phpstan/phpstan-phpunit/tree/2.0.16"
+            },
+            "time": "2026-02-14T09:05:21+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "11.0.12",
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
new file mode 100644
index 0000000000..e9ed039c3a
--- /dev/null
+++ b/phpstan-baseline.neon
@@ -0,0 +1,295 @@
+parameters:
+	ignoreErrors:
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-debian-cli-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-debian-web-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/linux-docker-cli-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/linux-docker-web-community.php
+
+		-
+			message: '#^Variable \$multiversion might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-cli-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-cli-community.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-cli-community.php
+
+		-
+			message: '#^Variable \$multiversion might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-web-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-web-community.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-fedora-web-community.php
+
+		-
+			message: '#^Variable \$multiversion might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-cli-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-cli-community.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-cli-community.php
+
+		-
+			message: '#^Variable \$multiversion might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-web-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-web-community.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-redhat-web-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-ubuntu-cli-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/linux-ubuntu-web-community.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-docker-cli.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-docker-web.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-homebrew-php.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-homebrew.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-macports.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/osx-macports.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/windows-chocolatey.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/windows-docker-cli.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/download-instructions/windows-docker-web.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/windows-downloads.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/windows-native.php
+
+		-
+			message: '#^Variable \$versionNoDot might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/download-instructions/windows-scoop-versions.php
+
+		-
+			message: '#^Variable \$version might not be defined\.$#'
+			identifier: variable.undefined
+			count: 4
+			path: include/download-instructions/windows-winget.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/get-download.inc
+
+		-
+			message: '#^Variable \$CSS might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 9
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$classes might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$config might not be defined\.$#'
+			identifier: variable.undefined
+			count: 3
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$curr might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$lang might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$shorturl might not be defined\.$#'
+			identifier: variable.undefined
+			count: 3
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$title might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/header.inc
+
+		-
+			message: '#^Variable \$userPreferences might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/langchooser.inc
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/layout.inc
+
+		-
+			message: '#^Variable \$TOC might not be defined\.$#'
+			identifier: variable.undefined
+			count: 6
+			path: include/layout.inc
+
+		-
+			message: '#^Variable \$link might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/layout.inc
+
+		-
+			message: '#^Variable \$title might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: include/layout.inc
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: include/mozopensearch.inc
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 5
+			path: include/mozsearch.inc
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: manual/index.php
+
+		-
+			message: '#^Variable \$N might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: manual/vote-note.php
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000000..e81fcf4243
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,13 @@
+includes:
+	- phpstan-baseline.neon
+
+parameters:
+	level: 3
+	paths:
+		- src
+		- tests
+		- manual
+		- include
+	fileExtensions:
+		- php
+		- inc

From b71e53fa6df16836c061939d221beeff4c81194b Mon Sep 17 00:00:00 2001
From: Markus Staab <maggus.staab@googlemail.com>
Date: Sat, 13 Jun 2026 09:43:35 +0200
Subject: [PATCH 2/3] scan also in bin

---
 phpstan.neon.dist | 1 +
 1 file changed, 1 insertion(+)

diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index e81fcf4243..68790050a9 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -4,6 +4,7 @@ includes:
 parameters:
 	level: 3
 	paths:
+		- bin
 		- src
 		- tests
 		- manual

From de1dab675bd41edefa3dfc36aaf1032133d7ac8f Mon Sep 17 00:00:00 2001
From: Markus Staab <maggus.staab@googlemail.com>
Date: Sat, 13 Jun 2026 09:52:42 +0200
Subject: [PATCH 3/3] scan everything but vendor/

---
 phpstan-baseline.neon | 354 ++++++++++++++++++++++++++++++++++++++++++
 phpstan.neon.dist     |  10 +-
 2 files changed, 359 insertions(+), 5 deletions(-)

diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index e9ed039c3a..ec3f0c6357 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -1,5 +1,227 @@
 parameters:
 	ignoreErrors:
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/1998.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/1999.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2000.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2001.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2002.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2003.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2004.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2005.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2006.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2007.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2008.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2009.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2010.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2011.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2012.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2013.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2014.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2015.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2016.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2017.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2018.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2019.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2020.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2021.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2022.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2023.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2024.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2025.php
+
+		-
+			message: '#^Variable \$SIDEBAR_DATA might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: archive/2026.php
+
+		-
+			message: '#^Variable \$cm might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: cal.php
+
+		-
+			message: '#^Variable \$cy might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: cal.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: conferences/index.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: docs.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: download-docs.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: downloads.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 8
+			path: error.php
+
+		-
+			message: '#^Variable \$userPreferences might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: error.php
+
 		-
 			message: '#^Variable \$version might not be defined\.$#'
 			identifier: variable.undefined
@@ -282,6 +504,30 @@ parameters:
 			count: 5
 			path: include/mozsearch.inc
 
+		-
+			message: '#^Variable \$CONF_TEASER might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: index.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 5
+			path: index.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: mailing-lists.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: manual-lookup.php
+
 		-
 			message: '#^Variable \$LANG might not be defined\.$#'
 			identifier: variable.undefined
@@ -293,3 +539,111 @@ parameters:
 			identifier: variable.undefined
 			count: 1
 			path: manual/vote-note.php
+
+		-
+			message: '#^Variable \$LAST_UPDATED might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: mirror-info.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: mirror-info.php
+
+		-
+			message: '#^Variable \$LAST_UPDATED might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: mirror.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: mirror.php
+
+		-
+			message: '#^Variable \$MIRRORS might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: my.php
+
+		-
+			message: '#^Variable \$userPreferences might not be defined\.$#'
+			identifier: variable.undefined
+			count: 11
+			path: my.php
+
+		-
+			message: '#^Variable \$QA_CHECKSUM_TYPES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: pre-release-builds.php
+
+		-
+			message: '#^Variable \$QA_RELEASES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: pre-release-builds.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: quickref.php
+
+		-
+			message: '#^Variable \$RELEASES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: releases/feed.php
+
+		-
+			message: '#^Variable \$OLDRELEASES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 3
+			path: releases/index.php
+
+		-
+			message: '#^Variable \$RELEASES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: releases/index.php
+
+		-
+			message: '#^Variable \$LANG might not be defined\.$#'
+			identifier: variable.undefined
+			count: 2
+			path: search.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 3
+			path: search.php
+
+		-
+			message: '#^Variable \$COUNTRIES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: submit-event.php
+
+		-
+			message: '#^Variable \$COUNTRIES might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: thanks.php
+
+		-
+			message: '#^Variable \$historical_mirrors might not be defined\.$#'
+			identifier: variable.undefined
+			count: 1
+			path: thanks.php
+
+		-
+			message: '#^Variable \$MYSITE might not be defined\.$#'
+			identifier: variable.undefined
+			count: 19
+			path: urlhowto.php
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 68790050a9..d924087d33 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -4,11 +4,11 @@ includes:
 parameters:
 	level: 3
 	paths:
-		- bin
-		- src
-		- tests
-		- manual
-		- include
+		- .
 	fileExtensions:
 		- php
 		- inc
+
+	excludePaths:
+		analyse:
+			- vendor/