PHP 7.4 support

Author: janbarasek

composer.json

@@ -9,7 +9,7 @@
 		}
 	],
 	"require": {
-		"php": ">=8.0.0"
+		"php": "^7.4 || ^8.0"
 	},
 	"require-dev": {
 		"phpstan/phpstan": "^0.12.52",
@@ -24,7 +24,7 @@
 	},
 	"config": {
 		"platform": {
-			"php": "8.0.0"
+			"php": "7.4.0"
 		}
 	},
 	"scripts": {

src/SelectboxItem.php

@@ -7,14 +7,20 @@
 
 final class SelectboxItem
 {
-	private int|string $id;
+	/** @var int|string */
+	private $id;
 
 	private string $name;
 
-	private int|string|null $parentId;
+	/** @var int|string|null */
+	private $parentId;
 
 
-	public function __construct(int|string $id, string $name, int|string|null $parentId = null)
+	/**
+	 * @param int|string $id
+	 * @param int|string|null $parentId
+	 */
+	public function __construct($id, string $name, $parentId = null)
 	{
 		$this->id = $id;
 		$this->name = $name;

src/SelectboxTree.php

@@ -92,9 +92,10 @@ 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, int|string|null $parent = null): array
+	private function serializeCategoriesToSelectbox(?array $categories, int $level = 0, $parent = null): array
 	{
 		static $usedIds = [];