Hello, everyone. I already posted about this issue but couldn't achieve what i needed.
So here is my problem i have a file mobile.php that is an external page of a Concrete5 website this page have an <?php include('connect.php');?> that allows it to connect to the website's database.
However my problem is that in the said db there is not the actual path to images that i need to be automatically displayed on the mobile.php. I have to use the fIDs of the images to get their URL
So far i think that i should use something like

$ih = Loader::helper('image');
$img = File::getByID($fID);
$imagePath = $img->getURL();

and then echo the $imagePath into the src of the image however when i enter any code related to Concrete5 the code just stop there and displays nothing.

So my questions are where exactly should i put this code? on the same file or in an external one? In order that my file understands it should it be connected to Concrete5? I'am just using define("C5_EXECUTE", true); on the top of the page is that enough?

Thanks