Update example app to work with PHP 8 #57

	name: PHP CI
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	ci:
	name: PHP CI - test
	runs-on: ubuntu-latest

	strategy:
	matrix:
	php: [7.4, 8.0, 8.1, 8.2]

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Setup PHP
	uses: shivammathur/setup-php@8e2ac35f639d3e794c1da1f28999385ab6fdf0fc
	with:
	php-version: ${{ matrix.php }}
	coverage: xdebug

	- name: Composer install
	run: composer install

	- name: PHP Linting
	run: ./vendor/bin/phpcs --standard=.duo_linting.xml -n src/* tests

	- name: PHP tests
	run: ./vendor/bin/phpunit --process-isolation tests

	- name: Composer install example
	working-directory: example
	run: composer install

	- name: Inject dummy example config
	working-directory: example
	run: printf "[duo]\nclient_id=DIAAAAAAAAAAAAAAAAAA\nclient_secret=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\napi_hostname=example.duosecurity.com\nredirect_uri=http://localhost:8080\nfailmode=closed\n" > ./duo.conf

	- name: Ensure example runs
	working-directory: example
	run: php index.php

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