chore: run required checks on docs-only PRs

.github/workflows/php.yml

@@ -2,16 +2,6 @@ name: "CI"
 
 on:
   pull_request:
-    paths:
-      - "**.php"
-      - "bin/posthog"
-      - "composer.json"
-      - "composer.lock"
-      - "phpcs.xml"
-      - "phpunit.xml"
-      - "api/public-api.json"
-      - "scripts/**"
-      - ".github/workflows/php.yml"
   push:
     branches:
       - main
@@ -26,26 +16,43 @@ on:
       - "scripts/**"
       - ".github/workflows/php.yml"
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs:
+  detect-markdown-only:
+    uses: PostHog/.github/.github/workflows/detect-markdown-only.yml@ec25337d9fae0100622cbfea1bd5bd88284ac10b
+    permissions:
+      pull-requests: read
+
   composer-validate:
+    needs: detect-markdown-only
     runs-on: ubuntu-latest
     steps:
+      - name: Complete markdown-only PR check
+        if: needs.detect-markdown-only.outputs.markdown_only == 'true'
+        run: echo "Only Markdown files changed; no additional work is required for this check."
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
 
       - name: Set up PHP
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f # v2.37.0
         with:
           php-version: 8.4
           tools: composer
 
       - name: Validate composer files
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         run: composer validate --no-check-lock --no-check-version --strict
 
   public-api:
+    needs: detect-markdown-only
+    if: needs.detect-markdown-only.outputs.markdown_only != 'true'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -63,29 +70,40 @@ jobs:
         run: composer api:check
 
   phpunit:
+    needs: detect-markdown-only
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         php-version: [8.2, 8.3, 8.4, 8.5]
     steps:
+      - name: Complete markdown-only PR check
+        if: needs.detect-markdown-only.outputs.markdown_only == 'true'
+        run: echo "Only Markdown files changed; no additional work is required for this check."
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
 
       - name: Set up PHP ${{ matrix.php-version }}
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f # v2.37.0
         with:
           php-version: ${{ matrix.php-version }}
           tools: composer, phpunit
 
       - name: Install Dependencies
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         run: composer install --prefer-dist --no-progress
 
       - name: Run PHPUnit Tests
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         run: ./vendor/bin/phpunit --bootstrap vendor/autoload.php --configuration phpunit.xml
 
   coverage:
     runs-on: ubuntu-latest
-    needs: phpunit
+    needs:
+      - detect-markdown-only
+      - phpunit
+    if: needs.detect-markdown-only.outputs.markdown_only != 'true'
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
@@ -103,22 +121,29 @@ jobs:
         run: XDEBUG_MODE=coverage ./vendor/bin/phpunit --bootstrap vendor/autoload.php --configuration phpunit.xml --coverage-text
 
   phpcs:
+    needs: detect-markdown-only
     runs-on: ubuntu-latest
     steps:
+      - name: Complete markdown-only PR check
+        if: needs.detect-markdown-only.outputs.markdown_only == 'true'
+        run: echo "Only Markdown files changed; no additional work is required for this check."
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         with:
           fetch-depth: 0 # important!
 
       # we may use whatever way to install phpcs, just specify the path on the next step
       # however, curl seems to be the fastest
       - name: Install PHP_CodeSniffer
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         run: |
           curl -OL https://squizlabs.github.io/PHP_CodeSniffer/phpcs.phar
           curl -OL https://squizlabs.github.io/PHP_CodeSniffer/phpcbf.phar
           php phpcs.phar --version
           php phpcbf.phar --version
 
       - name: Check PHP formatting
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         run: |
           php phpcbf.phar --standard=phpcs.xml --no-colors || phpcbf_status=$?
           if [ "${phpcbf_status:-0}" -gt 1 ]; then
@@ -127,6 +152,7 @@ jobs:
           git diff --exit-code -- lib test
 
       - uses: tinovyatkin/action-php-codesniffer@0043b33b3629611c37e8bc7ee8a4e061dc9a7ea2 # v1
+        if: needs.detect-markdown-only.outputs.markdown_only != 'true'
         with:
           files: "**.php" # you may customize glob as needed
           phpcs_path: php phpcs.phar