Improve code and examples

examples/codeigniter.yml

@@ -0,0 +1,27 @@
+name: Testing CodeIgniter
+on: [push, pull_request]
+jobs:
+  build:
+    strategy:
+      max-parallel: 6
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        php-versions: ['7.2', '7.3']
+    runs-on: ${{ matrix.operating-system }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: Setup PHP, with composer and extensions
+        uses: shivammathur/setup-php@master #https://github.com/shivammathur/setup-php
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extension-csv: mbstring, intl, curl, dom
+          coverage: xdebug #optional
+      - name: Install dependencies
+        run: composer install --no-progress --no-suggest --prefer-dist --optimize-autoloader
+      - name: Test with phpunit in windows
+        if: matrix.operating-system == 'windows-latest'
+        run: .\vendor\bin\phpunit --coverage-text
+      - name: Test with phpunit
+        if: matrix.operating-system != 'windows-latest'
+        run: vendor/bin/phpunit --coverage-text