hello friends.i need guide on how to insert google absence in php website.can anyone help me with a pictorial guide please?

If its the adsense for content, you can simply echo the script, but if its for mobile, there are two ways, You can make use of the PHP include function or directly embed the php ads for mobile script into the file part. Some of such post are on my blog which is in my signature below. You cab let us know where you want to place it so I can give you a breakdown guideline here.

on joomla?

Joomla has alot of modules for adds extensions these include.

googla adds,

adbrite,

text link adds

Basically any adds under the sun, even their isnt a specific add module for you adds provider you can download a php module and insert the code yourself. Check out the extensions link on joomla site and you can find what you are looking for. I would try to make a blog post for you on how to use it on Joomla.