Search twitter users using PHP

Hai,
I am doing application where I have to search the users from twitter using PHP. I have already done the search for searching in tweets. For example click the following link
http://search.twitter.com/search.atom?q=harish

The above link is to search the word "harish" in all tweets and display top 15 tweets.

Like this I want an API which will search the given keyword in usernames only. for Example, If the search keyword is "harish" then the result should be the usernames with harish and its latest tweet. Can anybody help to solve this issue?. Thanks in advance

There are many PHP APIs for Twitter already available. I would suggest looking at the following...

http://brandontreb.com/the-only-twit...ill-ever-need/