Update trim

system/helpers/url_helper.php

@@ -704,8 +704,10 @@ function redirect($uri = '', $method = 'auto', $code = NULL)
 	function cdn_js_url($uri = '')
 	{
 		$cdnJs = '//cdnjs.cloudflare.com/ajax/libs/';
-
-		return $cdnJs . trim($uri);
+        if ($uri !== null) {
+            $uri = trim($uri);
+        }
+		return $cdnJs . $uri;
 	}
 }
 
@@ -725,8 +727,10 @@ function cdn_js_url($uri = '')
 	function google_fonts_url($family = '')
 	{
 		$fonts = '//fonts.googleapis.com/css?family=';
-
-		return $fonts . trim($family);
+        if ($family !== null) {
+            $family = trim($family);
+        }
+        return $fonts .$family;
 	}
 }
 
@@ -746,7 +750,9 @@ function google_fonts_url($family = '')
 	function bootstrapcdn_url($uri = '')
 	{
 		$cdn = '//maxcdn.bootstrapcdn.com/bootstrap/';
-
-		return $cdn . trim($uri);
+        if ($uri !== null) {
+            $uri = trim($uri);
+        }
+		return $cdn .$uri;
 	}
 }

thirdParty/MX/Controller.php

@@ -46,7 +46,12 @@ class MX_Controller
 
     public function __construct()
     {
-        $class = str_replace(CI::$APP->config->item('controller_suffix'), '', get_class($this));
+        if (CI::$APP->config->item('controller_suffix') !== null) {
+            $class = str_replace(CI::$APP->config->item('controller_suffix'), '', get_class($this));
+        } else {
+            $class = get_class($this);
+        }
+
         log_message('info', $class . " MX_Controller Initialized");
 
         Modules::$registry[bear_str_to_lower($class)] = $this;

thirdParty/REST/Format.php

@@ -476,7 +476,10 @@ protected function _from_csv($data, $delimiter = ',', $enclosure = '"')
      */
     protected function _from_json($data)
     {
-        return json_decode(trim($data));
+        if ($data !== null){
+            $data = trim($data);
+        }
+        return json_decode($data);
     }
 
     /**
@@ -486,7 +489,10 @@ protected function _from_json($data)
      */
     protected function _from_serialize($data)
     {
-        return unserialize(trim($data));
+        if ($data !== null) {
+            $data = trim($data);
+        }
+        return unserialize($data);
     }
 
     /**
@@ -496,7 +502,10 @@ protected function _from_serialize($data)
      */
     protected function _from_php($data)
     {
-        return trim($data);
+        if ($data !== null) {
+            return trim($data);
+        }
+        return $data;
     }
 }