[php] failed to open stream: No such file or directory in

>     Warning: include_once(/PoliticalForum/headerSite.php) [function.include-once]: failed to open stream: No such file or
> directory in C:\xampp\htdocs\PoliticalForum\mainHome.php on line 16
> 
> Warning: include_once() [function.include]: Failed opening
> '/PoliticalForum/headerSite.php' for inclusion
> (include_path='.;C:\xampp\php\PEAR') in
> C:\xampp\htdocs\PoliticalForum\mainHome.php on line 16

Why do I get that Error when I use include_once:

   include_once("/PoliticalForum/headerSite.php");

include() needs a full file path, relative to the file system's root directory.

This should work:

 include_once("C:/xampp/htdocs/PoliticalForum/headerSite.php");

Failed to open stream error occurs because the given path is wrong such as:

$uploadedFile->saveAs(Yii::app()->request->baseUrl.'/images/'.$model->user_photo);

It will give an error if the images folder will not allow you to store images, be sure your folder is readable

you can use:

define("PATH_ROOT", dirname(__FILE__));
include_once PATH_ROOT . "/PoliticalForum/headerSite.php";