Use composer.json for cache key

Author: tvdijen

.github/workflows/php.yml

@@ -79,7 +79,7 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.COMPOSER_CACHE }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Require specific dependencies
@@ -145,7 +145,7 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.COMPOSER_CACHE }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Require specific dependencies
@@ -186,7 +186,7 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.COMPOSER_CACHE }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Validate composer.json and composer.lock
@@ -244,7 +244,7 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.COMPOSER_CACHE }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Install Composer dependencies