GitHub Actions workflow created and running

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['8.1', '8.2', '8.3']
+        php: ['7.4', '8.0', '8.1', '8.2', '8.3']
 
     name: PHP ${{ matrix.php }} Tests
 
@@ -36,14 +36,14 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Validate composer.json
         run: composer validate --strict
 
       - name: Install dependencies
-        run: composer install --prefer-dist --no-progress --no-suggest
+        run: composer install --prefer-dist --no-progress --no-interaction
 
       - name: Run unit tests
         run: composer test:unit

README.md

@@ -1,8 +1,8 @@
 # FamilySearch PHP Lite SDK
 
 [![Packagist](https://img.shields.io/packagist/v/familysearch/fs-php-lite.svg)](https://packagist.org/packages/familysearch/fs-php-lite)
-![Tests](https://github.com/PermanentOrg/fs-php-lite/workflows/Tests/badge.svg?branch=master)
-[![PHP Version](https://img.shields.io/badge/php-8.1%20%7C%208.2%20%7C%208.3-blue.svg)](https://github.com/PermanentOrg/fs-php-lite)
+![Tests](https://github.com/FamilySearch/fs-php-lite/workflows/Tests/badge.svg?branch=master)
+[![PHP Version](https://img.shields.io/badge/php-7.4%20%7C%208.0%20%7C%208.1%20%7C%208.2%20%7C%208.3-blue.svg)](https://github.com/FamilySearch/fs-php-lite)
 
 Lite PHP SDK for the [FamilySearch API](https://familysearch.org/developers/).
 
@@ -180,7 +180,7 @@ See [TESTING.md](TESTING.md) for detailed testing documentation.
 
 ## Requirements
 
-- PHP 8.1 or higher
+- PHP 7.4 or higher
 - ext-curl
 - ext-json
 
@@ -197,7 +197,7 @@ See [TESTING.md](TESTING.md) for detailed testing documentation.
 ### CI/CD
 
 Tests run automatically via GitHub Actions on:
-- PHP 8.1, 8.2, and 8.3
+- PHP 7.4, 8.0, 8.1, 8.2, and 8.3
 - Every push and pull request
 - Code coverage reports generated for PHP 8.3
 

TESTING.md

@@ -12,7 +12,7 @@ The SDK uses a multi-layered testing approach:
 
 ## Prerequisites
 
-- PHP 8.1, 8.2, or 8.3
+- PHP 7.4, 8.0, 8.1, 8.2, or 8.3
 - Composer
 - Xdebug (for code coverage)
 
@@ -151,7 +151,7 @@ open coverage/index.html
 Tests run automatically on every push and pull request via GitHub Actions.
 
 The CI pipeline:
-- Tests against PHP 8.1, 8.2, and 8.3
+- Tests against PHP 7.4, 8.0, 8.1, 8.2, and 8.3
 - Runs both unit and integration tests
 - Generates code coverage reports (PHP 8.3 only)
 - Uploads coverage to Codecov
@@ -310,19 +310,88 @@ composer test:integration
 
 ## PHP Version Testing
 
-To test against specific PHP versions locally using Docker:
+### Test All Supported PHP Versions Locally
+
+To verify compatibility across all supported PHP versions, use Docker with the script below.
+
+#### Quick Test (Single Version)
 
 ```bash
+# PHP 7.4
+docker run --rm -v $(pwd):/app -w /app php:7.4-cli sh -c "apt-get update -qq && apt-get install -y -qq git zip unzip > /dev/null && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && composer install -q && composer test"
+
+# PHP 8.0
+docker run --rm -v $(pwd):/app -w /app php:8.0-cli sh -c "apt-get update -qq && apt-get install -y -qq git zip unzip > /dev/null && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && composer install -q && composer test"
+
 # PHP 8.1
-docker run --rm -v $(pwd):/app -w /app php:8.1-cli composer test
+docker run --rm -v $(pwd):/app -w /app php:8.1-cli sh -c "apt-get update -qq && apt-get install -y -qq git zip unzip > /dev/null && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && composer install -q && composer test"
 
 # PHP 8.2
-docker run --rm -v $(pwd):/app -w /app php:8.2-cli composer test
+docker run --rm -v $(pwd):/app -w /app php:8.2-cli sh -c "apt-get update -qq && apt-get install -y -qq git zip unzip > /dev/null && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && composer install -q && composer test"
 
 # PHP 8.3
-docker run --rm -v $(pwd):/app -w /app php:8.3-cli composer test
+docker run --rm -v $(pwd):/app -w /app php:8.3-cli sh -c "apt-get update -qq && apt-get install -y -qq git zip unzip > /dev/null && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && composer install -q && composer test"
 ```
 
+#### Test All Versions at Once
+
+Copy-paste this complete script to test all PHP versions in sequence:
+
+```bash
+#!/bin/bash
+# Test all supported PHP versions
+
+set -e
+
+VERSIONS=("7.4" "8.0" "8.1" "8.2" "8.3")
+
+echo "Testing fs-php-lite across PHP versions..."
+echo "============================================"
+
+for VERSION in "${VERSIONS[@]}"; do
+    echo ""
+    echo "Testing PHP $VERSION..."
+    echo "------------------------"
+
+    docker run --rm \
+        -v $(pwd):/app \
+        -w /app \
+        php:${VERSION}-cli \
+        sh -c "
+            apt-get update -qq && \
+            apt-get install -y -qq git zip unzip > /dev/null && \
+            curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer > /dev/null && \
+            echo 'Installing dependencies...' && \
+            composer install -q && \
+            echo 'Running tests...' && \
+            composer test
+        "
+
+    if [ $? -eq 0 ]; then
+        echo "✓ PHP $VERSION: PASSED"
+    else
+        echo "✗ PHP $VERSION: FAILED"
+        exit 1
+    fi
+done
+
+echo ""
+echo "============================================"
+echo "All PHP versions tested successfully!"
+```
+
+Save as `test-all-versions.sh`, make executable with `chmod +x test-all-versions.sh`, and run:
+
+```bash
+./test-all-versions.sh
+```
+
+### Expected Behavior
+
+- **PHP 7.4**: Installs PHPUnit 9.x and php-vcr 1.7.x
+- **PHP 8.0**: Installs PHPUnit 9.x or 10.x and php-vcr 1.7.x or 1.8.x
+- **PHP 8.1+**: Installs PHPUnit 10.x and php-vcr 1.8.x
+
 ## Contributing
 
 When submitting pull requests:

composer.json

@@ -11,14 +11,14 @@
     ],
     "license": "Apache-2.0",
     "require": {
-        "php": ">=8.1",
+        "php": ">=7.4",
         "ext-curl": "*",
         "ext-json": "*"
     },
     "require-dev": {
         "gedcomx/gedcomx-php": "^3.1.2",
-        "php-vcr/php-vcr": "^1.6",
-        "phpunit/phpunit": "^10.5",
+        "php-vcr/php-vcr": "^1.7",
+        "phpunit/phpunit": "^9.5 || ^10.5",
         "php-vcr/phpunit-testlistener-vcr": "^3.0"
     },
     "autoload": {