I am new to jquery and php and was wondering is there an example for the php file used in 'editurl=somecode.php' ?

I think what the php file should do is to read the GET or POST data from javascript then write it to mysql, but I dont' know what POST variable names I should use in php so that I can send a query? For example, when I am adding a row, edit a row, or delete a row?

Any help will be greately apprecaited!