PLS Advise, Highlighted Text from a Query

Dear all, 1- I have a form with an input text : keyword 2- the field address is in my MySQL as TEXT field. 3- I select * from db where address like '%keyword%' 4- I want when echo the return $row["address"] to highlight the entered keyword (that the user has entered in the search form) in the output with a different font backcolor or by just another color... to let the user see what he was searching for 5- and if it possible to echo how accurate (percentage) the return rows has fit his search... Please Advise how to do it...