Add bench.yml

.github/workflows/bench.yml

@@ -0,0 +1,38 @@
+name: Benchmark
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  tests:
+    name: Build
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php:
+          - '8.1'
+          - '8.2'
+          - '8.3'
+          - '8.4'
+
+    steps:
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: bcmath, gmp, intl, dom, mbstring
+          ini-values: zend.assertions=1
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Remove Psalm when on PHP 8.4
+        if: ${{ matrix.php == '8.4' }}
+        run: composer remove --dev psalm/plugin-phpunit vimeo/psalm
+
+      - uses: "ramsey/composer-install@v3"
+
+      - name: Run phpbench
+        run: vendor/bin/phpbench run