Proposal: automatically add strict types

.github/workflows/add-strict-types.yml

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+name: Add Strict Types
+
+on:
+  pull_request:
+    branches:
+      - trunk
+
+jobs:
+  add-strict-types:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+
+      - name: Add strict types to new PHP files
+        id: add_strict_types
+        run: |
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "github-actions[bot]"
+          git fetch origin +refs/heads/trunk:refs/remotes/origin/trunk --quiet
+          NEW_PHP_FILES=$(git diff --name-only refs/remotes/origin/trunk HEAD -- '*.php' | xargs -r grep -LE 'declare\( strict_types=1 \)' || true)
+          if [ -n "$NEW_PHP_FILES" ]; then
+            for file in $NEW_PHP_FILES; do
+              if grep -q '^<?php' "$file"; then
+                sed -i '/^<?php/a declare( strict_types=1 );' "$file"
+              else
+                sed -i '1s|^|<?php declare( strict_types=1 );\n|' "$file"
+              fi
+            done
+            git add $NEW_PHP_FILES
+            git commit -m "Add strict types to new PHP files"
+            git push -u origin HEAD:refs/heads/add-strict-types-${{ github.sha }}
+            echo "::set-output name=strict_types_needed::true"
+          else
+            echo "No PHP files need strict types."
+            echo "::set-output name=strict_types_needed::false"    
+          fi
+
+      - name: Comment on PR
+        if: steps.add_strict_types.outputs.strict_types_needed == 'true'
+        uses: thollander/actions-comment-pull-request@v1
+        with:
+          message: "We've found some PHP files that don't have strict types. This commit adds them. Branch: add-strict-types-${{ github.sha }}"
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      # - name: Create PR
+      #   if: steps.add_strict_types.outputs.strict_types_needed == 'true'
+      #   uses: peter-evans/create-pull-request@v3
+      #   with:
+      #     token: ${{ secrets.GITHUB_TOKEN }}
+      #     commit-message: "Add strict types to new PHP files"
+      #     title: "[Automation]: Add strict types"
+      #     body: "We've found some PHP files that don't have strict types. This PR adds them."
+      #     branch: add-strict-types-${{ github.sha }}
+      #     branch-suffix: timestamp
+      #     labels: Automation

test.php

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+<?php
+
+ echo 'hi';