From 62ebd8ff12086b6f7aaaba846264e43169ab5c8c Mon Sep 17 00:00:00 2001
From: cash <cash.costello@gmail.com>
Date: Sat, 30 Mar 2013 12:50:30 -0400
Subject: Fixes #4378 prevent loading same library name twice

---
 engine/lib/elgglib.php | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'engine/lib/elgglib.php')

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index a49b620ac..fb652a141 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -93,10 +93,17 @@ function elgg_register_library($name, $location) {
  * @return void
  * @throws InvalidParameterException
  * @since 1.8.0
+ * @todo return boolean in 1.9 to indicate whether the library has been loaded
  */
 function elgg_load_library($name) {
 	global $CONFIG;
 
+	static $loaded_libraries = array();
+
+	if (in_array($name, $loaded_libraries)) {
+		return;
+	}
+
 	if (!isset($CONFIG->libraries)) {
 		$CONFIG->libraries = array();
 	}
@@ -113,6 +120,8 @@ function elgg_load_library($name) {
 		);
 		throw new InvalidParameterException($error);
 	}
+
+	$loaded_libraries[] = $name;
 }
 
 /**
-- 
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