August 24, 2010 
Enabling custom backgrounds is probably one of the easiest things you can do to improve a WordPress theme that you’re building or customizing. It takes one small addition to your theme’s functions.php file:
add_custom_background();
Save that and you’ll get Backgrounds added to the Dashboard >> Appearance menu, as shown here.
This will allow you or others using the theme to easily upload a background image and/or set a background color through the WordPress dashboard:
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Can someone explain the installation better to me, I found the file in my cpanel to add the add_custom_background(); but it just shows as a text file, how do I make it a working .php?
thanks in advance
Wilfred
Sorry I posted this twice, forgot to check off replies to my email firstCan someone explain the installation better to me, I found the file in my cpanel to add the add_custom_background(); but it just shows as a text file, how do I make it a working .php?
thanks in advance
Wilfred
You add it to your functions.php file or create one if your theme doesn’t have it yet.
WoW! that was easy, I am really impressed. I mean I already knew how to add a custom header via functions.php but the background story was even easier!
I think it is very easy and ipmportant.Thank u very much.
just curios how well this works with multi-site enabled blog networks, I mean where is the background file stored if hte user selects to upload his own background? Does each user get his own folder somewhere and what are the limitation on uploads?
I am still lost, can someone give me step by step directions how to add this? I can put it in the folder but it is only text, how do I make it a .php ?
I am not familiar with cpanel and how it handles things, the easiest way would be to use a ftp client and download your theme’s functions.php, edit it then re-upload it.