Optimize get_instance() calls/assignments

4 files changed, 21 insertions, 23 deletions

diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
index f13e4479f..48c803d7e 100644
--- a/system/libraries/Cache/drivers/Cache_redis.php
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -208,7 +208,7 @@ class CI_Cache_redis extends CI_Driver
 			{
 				$success = $this->_redis->connect($config['host'], $config['port'], $config['timeout']);
 			}
-			
+
 			if ( ! $success)
 			{
 				log_message('debug', 'Cache: Redis connection refused. Check the config.');
@@ -225,7 +225,7 @@ class CI_Cache_redis extends CI_Driver
 		{
 			$this->_redis->auth($config['password']);
 		}
-		
+
 		return TRUE;
 	}
 
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 67a65501e..525880f62 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -263,6 +263,13 @@ class CI_Upload {
 	 */
 	protected $_file_name_override	= '';
 
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	protected $CI;
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -279,6 +286,7 @@ class CI_Upload {
 		}
 
 		$this->mimes =& get_mimes();
+		$this->CI =& get_instance();
 
 		log_message('debug', 'Upload Class Initialized');
 	}
@@ -479,8 +487,7 @@ class CI_Upload {
 		}
 
 		// Sanitize the file name for security
-		$CI =& get_instance();
-		$this->file_name = $CI->security->sanitize_filename($this->file_name);
+		$this->file_name = $this->CI->security->sanitize_filename($this->file_name);
 
 		// Truncate the file name if it's too long
 		if ($this->max_filename > 0)
@@ -1081,7 +1088,7 @@ class CI_Upload {
 			return FALSE;
 		}
 
-		return get_instance()->security->xss_clean($data, TRUE);
+		return $this->CI->security->xss_clean($data, TRUE);
 	}
 
 	// --------------------------------------------------------------------
@@ -1094,17 +1101,13 @@ class CI_Upload {
 	 */
 	public function set_error($msg)
 	{
-		$CI =& get_instance();
-		$CI->lang->load('upload');
+		$this->CI->lang->load('upload');
 
-		if ( ! is_array($msg))
-		{
-			$msg = array($msg);
-		}
+		is_array($msg) OR $msg = array($msg);
 
 		foreach ($msg as $val)
 		{
-			$msg = ($CI->lang->line($val) === FALSE) ? $val : $CI->lang->line($val);
+			$msg = ($this->CI->lang->line($val) === FALSE) ? $val : $this->CI->lang->line($val);
 			$this->error_msg[] = $msg;
 			log_message('error', $msg);
 		}
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
index d263d789d..50ff423f2 100644
--- a/system/libraries/Xmlrpcs.php
+++ b/system/libraries/Xmlrpcs.php
@@ -384,17 +384,13 @@ class CI_Xmlrpcs extends CI_Xmlrpc {
 			{
 				return call_user_func(array($this, $method_parts[1]), $m);
 			}
+			elseif ($this->object === FALSE)
+			{
+				return get_instance()->$method_parts[1]($m);
+			}
 			else
 			{
-				if ($this->object === FALSE)
-				{
-					$CI =& get_instance();
-					return $CI->$method_parts[1]($m);
-				}
-				else
-				{
-					return $this->object->$method_parts[1]($m);
-				}
+				return $this->object->$method_parts[1]($m);
 			}
 		}
 		else
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 229b1ecbc..250ee02cd 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -425,8 +425,7 @@ class CI_Zip {
 			$filename .= '.zip';
 		}
 
-		$CI =& get_instance();
-		$CI->load->helper('download');
+		get_instance()->load->helper('download');
 		$get_zip = $this->get_zip();
 		$zip_content =& $get_zip;