Image upload store with File name

[big-dog]

I think this is the bit of code that is doing the file upload portion of a form/php process. I need the file to be stored with the original file name. Right now it is stored with a name I can’t retrieve from DB with out looking at the folder after it is uploaded. My scenario is I’m displaying information from the DB on a webpage by echoing it. I would like to display the image as well, but how.
So first I want to tackle the storing of image with real file name.

// File upload handling
if($_FILES['venues_field_15']['name']!=''){
$venues_field_15_filename = "file_15_".date("sihdmY").substr($_FILES['venues_field_15']['name'],strlen($_FILES['venues_field_15']['name'])-4);
if(!move_uploaded_file($_FILES['venues_field_15']['tmp_name'], "./files/".$venues_field_15_filename)){
die("File " .  $_FILES['venues_field_15']['name'] . " was not uploaded.");

[dagon]

solution here: move_uploaded_file and here: Handling file uploads

[big-dog]

I looked at that stuff but I dont think I need to change all of my code I just dont really know how the current code is working I used a on-line form gen to create the form and the process page. From what I see on web I think I need to change a couple of things here

$venues_field_15_filename = "file_15_".date("sihdmY").substr($_FILES['venues_field_15']['name'],strlen($_FILES['venues_field_15']['name'])-4);

file_15_".date("sihdmY").substr not sure about .substr, but looks like files are stored like this file_15_01150220052009.png the real name is arena.png

[dagon]

move_uploaded_file specifies the file name and path it writes, $_FILES array contains the original (posted) file name.

[big-dog]

sorry but I dont really understand.
I dot know what part to delete or modify and if modify 😕