Added bug fixes for older versions of PHP

.github/workflows/tests.yml

@@ -0,0 +1,68 @@
+name: Tests
+
+on:
+  push:
+    branches: [ master, Workarounds ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  current:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-version:
+          - "8.1"
+          - "8.2"
+          - "8.3"
+          - "8.4"
+
+    steps:
+    - uses: "actions/checkout@v3"
+    - uses: "shivammathur/setup-php@v2"
+      with:
+        php-version: ${{ matrix.php-version }}
+
+    - name: Validate composer.json
+      run: composer validate --strict
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v3
+      with:
+        path: vendor
+        key: php-${{ matrix.php-version }}
+
+    - name: Install Composer dependencies
+      run: composer install --prefer-dist --no-progress
+
+    - name: Run test suite
+      run: composer run-script test
+
+  outdated-8-1-2:
+    runs-on: ubuntu-latest
+    container: setupphp/node@sha256:9271c0a914deb70c1717ec113410c9d43e48123d0ed398bb696f00f4f0ef15ba
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.1"
+
+    steps:
+    - uses: "actions/checkout@v3"
+    - uses: "shivammathur/setup-php@v2"
+      with:
+        php-version: ${{ matrix.php-version }}
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v3
+      with:
+        path: vendor
+        key: php-outdated
+
+    - name: Install Composer dependencies
+      run: composer install --prefer-dist --no-progress
+
+    - name: Run test suite
+      run: composer run-script test

.gitignore

@@ -1,2 +1,3 @@
-/.phpunit.cache
+/.*
+/composer.lock
 /vendor

composer.json

@@ -6,7 +6,7 @@
 	"keywords": ["dom", "xsl", "xslt"],
 	"license": "MIT",
 	"require": {
-		"php":     ">=8.1",
+		"php":     "^8.1",
 		"ext-dom": "*"
 	},
 	"require-dev": {