ClassUtil method

Author: doganoo

.gitignore

@@ -3,3 +3,5 @@
 /vendor/
 
 main.php
+
+export.txt

src/Util/ClassUtil.php

@@ -25,6 +25,8 @@
 
 namespace doganoo\PHPUtil\Util;
 
+use doganoo\PHPAlgorithms\Datastructure\Lists\ArrayLists\ArrayList;
+
 /**
  * Class ClassUtil
  *
@@ -128,4 +130,24 @@ public static function getAllProperties($object, bool $asString = true) {
         }
     }
 
+    /**
+     * @param $object
+     * @param bool $asObject
+     * @return ArrayList|null
+     * @throws \ReflectionException
+     */
+    public static function getAllParentClasses($object, bool $asObject = true): ?ArrayList {
+        if (!\is_object($object)) return null;
+        $reflectionClass = new \ReflectionClass($object);
+        $parentClasses = new ArrayList();
+
+        $parentClass = $reflectionClass->getParentClass();
+        while (false !== $parentClass) {
+            if ($asObject) $parentClasses->add($parentClass);
+            else $parentClasses->add($parentClass->getName());
+            $parentClass = $parentClass->getParentClass();
+        }
+        return $parentClasses;
+    }
+
 }

test/Util/ClassUtilTest.php

@@ -0,0 +1,57 @@
+<?php
+
+use doganoo\PHPAlgorithms\Datastructure\Lists\ArrayLists\ArrayList;
+use doganoo\PHPUtil\Util\ClassUtil;
+use PHPUnit\Framework\TestCase;
+
+class ClassUtilTest extends TestCase {
+
+    /**
+     * @throws ReflectionException
+     */
+    public function testGetParentClasses() {
+        $parentClasses = ClassUtil::getAllParentClasses("", true);
+        $this->assertNull($parentClasses);
+
+        $parentClasses = ClassUtil::getAllParentClasses(new X(), true);
+        $this->assertInstanceOf(ArrayList::class, $parentClasses);
+
+        $parentClasses = ClassUtil::getAllParentClasses(new Y(), false);
+
+        foreach ($parentClasses as $class) {
+            $this->assertTrue($class === X::class);
+        }
+
+        $parentClasses = ClassUtil::getAllParentClasses(new Z(), false);
+
+        foreach ($parentClasses as $class) {
+            $this->assertTrue($class === X::class || $class === Y::class);
+        }
+
+        $parentClasses = ClassUtil::getAllParentClasses(new Y(), true);
+
+        /** @var ReflectionClass $class */
+        foreach ($parentClasses as $class) {
+            $this->assertTrue($class->getName() === X::class);
+        }
+
+        $parentClasses = ClassUtil::getAllParentClasses(new Z(), true);
+
+        /** @var ReflectionClass $class */
+        foreach ($parentClasses as $class) {
+            $this->assertTrue($class->getName() === X::class || $class->getName() === Y::class);
+        }
+    }
+}
+
+class X {
+
+}
+
+class Y extends X {
+
+}
+
+class Z extends Y {
+
+}