Set PHP 7.4 as minimal version

Author: jdecool

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [ '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.4', '8.0', '8.1', '8.2' ]
         prefer: [ 'lowest', 'stable' ]
 
     name: Test on PHP ${{ matrix.php }} with ${{ matrix.prefer }} composer prefer option
@@ -52,7 +52,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 7.1
+          php-version: 7.4
 
       - name: Install dependencies
         run: composer update --prefer-stable --prefer-dist --no-progress

composer.json

@@ -5,7 +5,7 @@
     "keywords": ["enum", "phpstan"],
     "license": "MIT",
     "require": {
-        "php": "^7.1|^8.0",
+        "php": "^7.4|^8.0",
         "myclabs/php-enum": "^1.2",
         "phpstan/phpstan": "^1.0"
     },