Since a few months, applications have to use OAuth to authenticate a Twitter account using the REST API. If you want to write a php application for just one account (like your own small webclient), you don’t have to go the „ping-pong“ way of authentication. You only need this to authenticate different users and as we only need access for one single user, it is possible to simplify the oauth authentication step. Nevertheless I find it much more comfortable to you a finished library. In this example we will use Abraham Williams‘ awesome TwitterOAuth library for PHP, which requires a minimum PHP version of 5.2.x, cURL and OpenSSL.
First you have to visit http://dev.twitter.com/apps an register a new application. Choose „Browser“ as application type and set the default access level to „Read & Write“. You will need the printed „Consumer key“ and