Add php example, including a unit test

Author: kienstra

README.md

@@ -7,7 +7,7 @@ This repository demonstrates an advanced use case of setup workflow feature on C
 ## Files
 
 * `.circleci/config.yml` implements both 1) the setup workflow, and 2) common resources (i.e., jobs and commands) for main workflows/jobs.
-* `php/.circleci/config.yml`, `js/.circleci/config.yml`, and `e2e/.circleci/config.yml` implement independent modular configs for modules php/, js/, and e2e/, respectively.
+* `php/.circleci/config.yml`, `js/.circleci/config.yml`, and `e2e/.circleci/config.yml` implement independent modular configs for modules `php/`, `js/`, and `e2e/`, respectively.
 
 ## How does it work?
 

php/.gitignore

@@ -0,0 +1,2 @@
+vendor
+.phpunit.result.cache

php/.phpcs.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<ruleset name="Coding Standard for Example PHP">
+
+    <rule ref="PSR12" />
+
+    <arg value="p"/>
+    <arg value="s"/>
+    <arg name="extensions" value="php"/>
+
+    <!-- Include only the directories containing PHP files. -->
+    <file>src/</file>
+    <file>test/</file>
+</ruleset>

php/.phpunit.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         convertDeprecationsToExceptions="true"
+         colors="true"
+         verbose="true"
+         cacheDirectory=".phpunit.cache"
+         failOnRisky="true"
+         failOnWarning="true">
+    <testsuites>
+        <testsuite name="test">
+            <directory>test</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <ini name="precision" value="14"/>
+        <ini name="serialize_precision" value="14"/>
+
+        <const name="PHPUNIT_TESTSUITE" value="true"/>
+    </php>
+</phpunit>

php/composer.json

@@ -0,0 +1,26 @@
+{
+    "name": "asw/example-php",
+    "description": "Example PHP directory",
+    "type": "library",
+    "license": "GPL-2.0-or-later",
+    "autoload": {
+        "psr-4": {
+            "Asw\\ExamplePhp\\": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Ryan Kienstra",
+            "email": "[email protected]"
+        }
+    ],
+    "require-dev": {
+        "phpunit/phpunit": "^9.5",
+        "sirbrillig/phpcs-variable-analysis": "^2.11"
+    },
+    "scripts": {
+        "lint": "phpcs",
+        "lint-fix": "phpcbf",
+        "test": "phpunit"
+    }
+}