PHP 8: Native support for union types

Author: janbarasek

.github/workflows/main.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Install PHP
       uses: shivammathur/setup-php@master
       with:
-        php-version: 7.4
+        php-version: 8.0
 
     - name: Install composer deps
       run: |
@@ -26,7 +26,7 @@ jobs:
     - name: Check coding standards
       run: |
         php temp/code-checker/code-checker --short-arrays --strict-types --fix --no-progress
-        php temp/coding-standard/ecs check src --config temp/coding-standard/coding-standard-php71.yml
+        php temp/coding-standard/ecs check src --config temp/coding-standard/coding-standard-php80.yml
 
     - name: Check PHPStan rules
       run: composer phpstan

composer.json

@@ -9,7 +9,7 @@
 		}
 	],
 	"require": {
-		"php": ">=7.4.0"
+		"php": ">=8.0.0"
 	},
 	"require-dev": {
 		"phpstan/phpstan": "^0.12.52",
@@ -24,7 +24,7 @@
 	},
 	"config": {
 		"platform": {
-			"php": "7.4.0"
+			"php": "8.0.0"
 		}
 	},
 	"scripts": {

src/SelectboxItem.php

@@ -7,20 +7,14 @@
 
 final class SelectboxItem
 {
-	/** @var int|string */
-	private $id;
+	private int|string $id;
 
 	private string $name;
 
-	/** @var int|string|null */
-	private $parentId;
+	private int|string|null $parentId;
 
 
-	/**
-	 * @param int|string $id
-	 * @param int|string|null $parentId
-	 */
-	public function __construct($id, string $name, $parentId = null)
+	public function __construct(int|string $id, string $name, int|string|null $parentId = null)
 	{
 		$this->id = $id;
 		$this->name = $name;
@@ -36,7 +30,7 @@ public function toArray(): array
 		return [
 			'id' => $this->id,
 			'name' => $this->name,
-			'parent_id' => $this->parentId,
+			'parent' => $this->parentId,
 		];
 	}
 }

src/SelectboxTree.php

@@ -92,10 +92,9 @@ public function setNameFormatter(NameFormatter $nameFormatter): void
 	 * Build category tree to simple selectbox array.
 	 *
 	 * @param string[][]|null[][]|null $categories
-	 * @param int|string|null $parent
 	 * @return mixed[][]
 	 */
-	private function serializeCategoriesToSelectbox(?array $categories, int $level = 0, $parent = null): array
+	private function serializeCategoriesToSelectbox(?array $categories, int $level = 0, int|string|null $parent = null): array
 	{
 		static $usedIds = [];