Making php5.4 safe;

Not registering the same post type twice

composer.json

@@ -4,7 +4,7 @@
   "description": "A plugin for WordPress that makes post types easier to manage",
   "minimum-stability": "stable",
   "license": "GPL-3.0",
-  "version": "2.0.4",
+  "version": "2.0.5",
   "autoload": {
     "psr-4": {
       "Outlandish\\Wordpress\\Oowp\\": "src/"

src/PostTypeManager.php

@@ -36,10 +36,14 @@ protected function registerPostType($className)
     {
 		/** @var WordpressPost|string $className */
 
-    	if (!is_subclass_of($className, WordpressPost::class)) {
+    	if (!is_subclass_of($className, 'Outlandish\Wordpress\Oowp\PostTypes\WordpressPost')) {
     		throw new \RuntimeException($className . ' is not a subclass of WordpressPost');
 		}
     	$postType = $className::postType();
+        if (in_array($postType, $this->postTypes)) {
+            // already registered
+            return;
+        }
 		if ($postType !== 'page' && $postType !== 'post' && $postType !== 'attachment' ) {
 			$defaults = array(
 				'labels' => AdminUtils::generateLabels($className::friendlyName(), $className::friendlyNamePlural()),
@@ -69,7 +73,9 @@ protected function registerPostType($className)
 	/**
 	 * Registers the given classes as OOWP post types
 	 *
-	 * Usage:
+	 * Usage (php < 5.5):
+	 * $manager->registerPostTypes(['namespace\of\posttypes\MyPostType', 'namespace\of\posttypes\AnotherPostType'])
+	 * Usage (php >= 5.5):
 	 * $manager->registerPostTypes([MyPostType::class, AnotherPostType::class])
 	 *
 	 * @param string[] $classNames
@@ -83,8 +89,9 @@ public function registerPostTypes($classNames)
 
 		/** @var WordpressPost[]|string[] $classNames */
 
-		$classNames[] = OowpPage::class;
-		$classNames[] = OowpPost::class;
+		// add the built-in post/page classes after all of the others
+		$classNames[] = 'Outlandish\Wordpress\Oowp\PostTypes\OowpPage';
+		$classNames[] = 'Outlandish\Wordpress\Oowp\PostTypes\OowpPost';
 		$classNames = array_unique($classNames);
 
 		// register all classes

src/PostTypes/WordpressPost.php

@@ -873,7 +873,7 @@ public static function createWordpressPost($data = null) {
 			if ($postData) {
 				$className = PostTypeManager::get()->getClassName($postData->post_type);
                 if (!$className) {
-                    $className = MiscPost::class;
+                    $className = 'Outlandish\Wordpress\Oowp\PostTypes\MiscPost';
                 }
 				if ($postData instanceof $className) {
 					return $postData;