Getting File Contents, Speed and Efficiency

[john tindell]

Does anyone know which would be more efficient to use?

ob_start();
include("path/to.php");
$data = ob_get_contents(); 

OR

$fp = fopen("path/to.php","r") 
        while(! feof($fp)){
            $data.=fgets($fp,1024);
        } 

Thanks for answering stupid questions