Emit installed version, not detected.

.github/workflows/test.yml

@@ -36,7 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - run: |
-          echo '{"require": {"php": ">=7.4"}}' > composer.json
+          echo '{"require": {"php": "=7.4"}}' > composer.json
       - uses: ./.
       - run: |
           # Verify that PHP is available

action.yml

@@ -17,7 +17,7 @@ inputs:
 outputs:
   php_version:
     description: "The PHP version detected from composer.json"
-    value: ${{ steps.read-php-version.outputs.php_version }}
+    value: ${{ steps.emit-php-detected.outputs.php_version }}
 
 runs:
   using: "composite"
@@ -78,7 +78,6 @@ runs:
           echo "Composer Cache Key: ${{ steps.composer-cache-find.outputs.key }}"
           echo "Composer Cache Restore Key: ${{ steps.composer-cache-find.outputs.restore-key }}"
         fi
-        {
-          # Emit installed php version by major release
-          echo "PHP_VERSION=$PHP_VERSION"
-        } >> $GITHUB_ENV
+        # Emit installed php version by major release
+        echo "PHP_VERSION=$PHP_VERSION" >> $GITHUB_ENV
+        echo "php_version=$PHP_VERSION" >> $GITHUB_OUTPUT