Follow and validate against PSR-12

This prevents unnecessary merge conflicts in future.
Also code follows a simple formatting rule set and is easier to read.

.github/workflows/ci.yaml

@@ -29,6 +29,29 @@ jobs:
       - name: PHP lint
         run: "find *.php src tests -name '*.php' -print0 | xargs -0 -n 1 -P 4 php -l"
 
+  check-cgl:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Get Composer Cache Directory
+        id: composer-cache
+        run: |
+            echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --no-suggest
+
+      - name: Check CGL
+        run: ./vendor/bin/phpcs
+
   tests:
     runs-on: ubuntu-latest
     steps:

composer.json

@@ -27,6 +27,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.3",
-        "phpspec/prophecy-phpunit": "^2.0"
+        "phpspec/prophecy-phpunit": "^2.0",
+        "squizlabs/php_codesniffer": "^3.5"
     }
 }

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b9cf8f698cb3698b7ded4c56e55e8421",
+    "content-hash": "20a8d4087070dc229b18c15160e7bf79",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -2481,6 +2481,57 @@
             ],
             "time": "2020-06-26T12:18:43+00:00"
         },
+        {
+            "name": "squizlabs/php_codesniffer",
+            "version": "3.5.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
+                "reference": "e97627871a7eab2f70e59166072a6b767d5834e0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/e97627871a7eab2f70e59166072a6b767d5834e0",
+                "reference": "e97627871a7eab2f70e59166072a6b767d5834e0",
+                "shasum": ""
+            },
+            "require": {
+                "ext-simplexml": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.0 || ^5.0 || ^6.0 || ^7.0"
+            },
+            "bin": [
+                "bin/phpcs",
+                "bin/phpcbf"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.x-dev"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Greg Sherwood",
+                    "role": "lead"
+                }
+            ],
+            "description": "PHP_CodeSniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.",
+            "homepage": "https://github.com/squizlabs/PHP_CodeSniffer",
+            "keywords": [
+                "phpcs",
+                "standards"
+            ],
+            "time": "2020-08-10T04:50:15+00:00"
+        },
         {
             "name": "symfony/polyfill-ctype",
             "version": "v1.18.1",

phpcs.xml.dist

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<ruleset name="project">
+    <description>This project coding standard</description>
+
+    <file>src/</file>
+    <file>tests/</file>
+
+    <arg name="encoding" value="utf-8" />
+    <arg name="extensions" value="php" />
+
+    <rule ref="PSR12">
+        <exclude name="Generic.Files.LineLength.TooLong" />
+    </rule>
+</ruleset>

src/Configuration/Settings.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Configuration;
@@ -68,7 +69,7 @@ class Settings
         $this->apiKey = $apiKey;
         $this->verifierID = $verifierID;
         $this->user_secret = $user_secret;
-        $this->APIUrl = is_null($domain) ? 'https://www.skilldisplay.eu' : 'https://' . $domain;
+        $this->APIUrl = (is_null($domain)) ? 'https://www.skilldisplay.eu' : 'https://' . $domain;
-        $this->mySkillDisplayUrl = is_null($domain) ? 'https://my.skilldisplay.eu' : 'https://my.' . $domain;
+        $this->mySkillDisplayUrl = (is_null($domain)) ? 'https://my.skilldisplay.eu' : 'https://my.' . $domain;
     }
 }

src/Example/APIKeyRequired/AutoGrantSelfVerification.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Example\APIKeyRequired;

src/Example/FullSettingsRequired/AutoGrantBusinessVerification.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Example\APIKeyRequired;

src/Example/Includes/ExampleSettings.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 use SkillDisplay\PHPToolKit\Configuration\Settings;

src/Example/NoSettingsRequired/RenderCustomVerificationLinks.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Example\NoSettingsRequired;

src/Example/NoSettingsRequired/RenderVerificationButtons.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Example\NoSettingsRequired;

src/Verification/Issuer.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Verification;
@@ -31,8 +32,7 @@ class Issuer
         string $useremail,
         string $vtype,
         bool $isSkillSet = false
-    ): array
+    ): array {
-    {
         if ($isSkillSet) {
             $requestData['SkillSetId'] = $ID;
         } else {

src/Verification/Link.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Verification;

tests/Unit/Configuration/SettingsTest.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Tests\Unit\Configuration;

tests/Unit/Verification/LinkTest.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace SkillDisplay\PHPToolKit\Tests\Unit\Verification;