5 files changed, 18 insertions, 8 deletions
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index dd3cba25d..540605876 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -710,9 +710,12 @@ function elgg_register_event_handler($event, $object_type, $callback, $priority
  */
 function elgg_unregister_event_handler($event, $object_type, $callback) {
 	global $CONFIG;
-	foreach ($CONFIG->events[$event][$object_type] as $key => $event_callback) {
-		if ($event_callback == $callback) {
-			unset($CONFIG->events[$event][$object_type][$key]);
+
+	if (isset($CONFIG->events[$event]) && isset($CONFIG->events[$event][$object_type])) {
+		foreach ($CONFIG->events[$event][$object_type] as $key => $event_callback) {
+			if ($event_callback == $callback) {
+				unset($CONFIG->events[$event][$object_type][$key]);
+			}
 		}
 	}
 }
@@ -889,9 +892,12 @@ function elgg_register_plugin_hook_handler($hook, $type, $callback, $priority =
  */
 function elgg_unregister_plugin_hook_handler($hook, $entity_type, $callback) {
 	global $CONFIG;
-	foreach ($CONFIG->hooks[$hook][$entity_type] as $key => $hook_callback) {
-		if ($hook_callback == $callback) {
-			unset($CONFIG->hooks[$hook][$entity_type][$key]);
+
+	if (isset($CONFIG->hooks[$hook]) && isset($CONFIG->hooks[$hook][$entity_type])) {
+		foreach ($CONFIG->hooks[$hook][$entity_type] as $key => $hook_callback) {
+			if ($hook_callback == $callback) {
+				unset($CONFIG->hooks[$hook][$entity_type][$key]);
+			}
 		}
 	}
 }
@@ -1073,8 +1079,8 @@ function _elgg_php_error_handler($errno, $errmsg, $filename, $linenum, $vars) {
 		case E_USER_WARNING :
 		case E_RECOVERABLE_ERROR: // (e.g. type hint violation)
 			
-			// check if the error wasn't suppressed by @-functionname
-			if(error_reporting()){
+			// check if the error wasn't suppressed by the error control operator (@)
+			if (error_reporting()) {
 				error_log("PHP WARNING: $error");
 			}
 			break;
diff --git a/engine/lib/group.php b/engine/lib/group.php
index feb1f1e7f..852c08de9 100644
--- a/engine/lib/group.php
+++ b/engine/lib/group.php
@@ -33,6 +33,7 @@ function get_group_entity_as_row($guid) {
  * @param string $description Description
  *
  * @return bool
+ * @access private
  */
 function create_group_entity($guid, $name, $description) {
 	global $CONFIG;
diff --git a/engine/lib/objects.php b/engine/lib/objects.php
index f186c66cb..e5e8f67c4 100644
--- a/engine/lib/objects.php
+++ b/engine/lib/objects.php
@@ -31,6 +31,7 @@ function get_object_entity_as_row($guid) {
  * @param string $description The object's description
  *
  * @return bool
+ * @access private
  */
 function create_object_entity($guid, $title, $description) {
 	global $CONFIG;
diff --git a/engine/lib/sites.php b/engine/lib/sites.php
index 8b772668d..d9eb2d25e 100644
--- a/engine/lib/sites.php
+++ b/engine/lib/sites.php
@@ -58,6 +58,7 @@ function get_site_entity_as_row($guid) {
  * @param string $url         URL of the site
  *
  * @return bool
+ * @access private
  */
 function create_site_entity($guid, $name, $description, $url) {
 	global $CONFIG;
diff --git a/engine/lib/users.php b/engine/lib/users.php
index 527eff3cd..95ef9d176 100644
--- a/engine/lib/users.php
+++ b/engine/lib/users.php
@@ -44,6 +44,7 @@ function get_user_entity_as_row($guid) {
  * @param string $code     A code
  *
  * @return bool
+ * @access private
  */
 function create_user_entity($guid, $name, $username, $password, $salt, $email, $language, $code) {
 	global $CONFIG;