One way you could do this is to call /users/show. If the user exists their details will be returned, if not, you will get a 404 or 403 error (Suspended users are returned as a 403 error). You can find out more about /users/show on our developer resources site: http://dev.twitter.com/doc/get/users/show
The /users/show request is rate limited so you will want to be careful about the number of requests you make. Hope that helps, Matt On Sat, Aug 28, 2010 at 5:46 PM, Sujit Kumar Garikipati <garikipati.sujitku...@gmail.com> wrote: > You can refer to this library, written by @abraham to learn using OAuth > authorization in PHP. > http://twitteroauth.labs.poseurtech.com/connect.php > On Sat, Aug 28, 2010 at 7:15 AM, computerzworld <meat2...@gmail.com> wrote: >> >> Hi, I have created application that fetches users' tweets from his/her >> user account. I want to validate the username using php & ajax when he/ >> she is entering in the textbox. Is there any way using which I can get >> response whether user have entered valid username or not? Please help >> me. Thanks in advance. >> >> -- >> Twitter developer documentation and resources: http://dev.twitter.com/doc >> API updates via Twitter: http://twitter.com/twitterapi >> Issues/Enhancements Tracker: >> http://code.google.com/p/twitter-api/issues/list >> Change your membership to this group: >> http://groups.google.com/group/twitter-development-talk?hl=en > > -- > Twitter developer documentation and resources: http://dev.twitter.com/doc > API updates via Twitter: http://twitter.com/twitterapi > Issues/Enhancements Tracker: > http://code.google.com/p/twitter-api/issues/list > Change your membership to this group: > http://groups.google.com/group/twitter-development-talk?hl=en > -- Matt Harris Developer Advocate, Twitter http://twitter.com/themattharris -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk?hl=en