Fix Request variable retrieval

- getSearch functions to properly retrieve HTTP vars.
- getVar() function calls replaced with getGet() or getPost()
- replaced TRUE/FALSE constants with true/false keywords

app/Controllers/Secure_Controller.php

@@ -83,7 +83,7 @@ class Secure_Controller extends BaseController
 	{
 		$result = true;
 
-		foreach($this->request->getVar(null, FILTER_SANITIZE_FULL_SPECIAL_CHARS) as $value)
+		foreach($this->request->getGet(null, FILTER_SANITIZE_FULL_SPECIAL_CHARS) as $value)
 		{
 			$result &= (int)parse_decimals($value);
 		}