Added elgg_instanceof().

git-svn-id: http://code.elgg.org/elgg/trunk@5353 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 22 insertions, 0 deletions

diff --git a/engine/lib/entities.php b/engine/lib/entities.php
index af5b140d9..17bc0aa1e 100644
--- a/engine/lib/entities.php
+++ b/engine/lib/entities.php
@@ -3631,6 +3631,28 @@ function recursive_delete_permissions_check($hook, $entity_type, $returnvalue, $
 }
 
 /**
+ * Checks if $entity is an ElggEntity and optionally for type and subtype.
+ *
+ * @param $entity
+ * @param $type
+ * @param $subtype
+ * @return Bool
+ */
+function elgg_instanceof($entity, $type = NULL, $subtype = NULL) {
+	$return = ($entity instanceof ElggEntity);
+
+	if ($type) {
+		$return = $return && ($entity->getType() == $type);
+	}
+
+	if ($subtype) {
+		$return = $return && ($entity->getSubtype() == $subtype);
+	}
+
+	return $return;
+}
+
+/**
  * Garbage collect stub and fragments from any broken delete/create calls
  *
  * @param unknown_type $hook