The WebLessons.info site has a new tutorial posted showing you how to use the LinkedIn authentication handling to allow your users to log in with their own account information.

LinkedIn is a business-oriented social networking service. It is mainly used for professional networking. So if you are having an application or website that serves working professionals then its very important for you to implement login with LinkedIn in your application. By this way you can able to access the data of your users like email, work history, education etc. So now let’s dive into the coding part.

They walk you through the various steps, providing screenshots or code where applicable:

• Creating a LinkedIn Application
• Get the API Key and Secret Key
• Create the database and set up the PHP configuration to connect
• finally, the PHP code for the login form and making the request to LinkedIn

A live demo can be found here (but if you're paranoid about your credentials, I wouldn't use it) and you can download all files included in the tutorial.

New from the Content with Style blog today there's a quick tutorial showing how to connect an application to LinkedIn with the Zend_Ouath component.

Matthias has made look into Linkedin and OAuth for a bit. This example was a very interesting read, but I think it's overcomplicating things slightly. That's why I want to show a very simple example inspired by what we've done for the brand new CwS Author pages.

His example sets up a few options, some for callbacks and others for general settings, and makes a new Zend_Oauth_Consumer object to pull in and connect the LinkedIn API to your application. He also includes a sample client that uses this connection to fetch the current status for the user in question.

Hasin Hayder has posted a few simple files that you can use to make an oAuth connection from your application. In his cases it's been tested with Twitter and LinkedIn.

I’ve found that lots of people are posting in their forum for the code samples. And only very few obscure code examples are available. I’ve found phplinkedin script but that is just too bulky for a simple oAuth dance So here are two files to perform 3 step oAuth Dance for both twitter and linkedin.

The code (either cut-and-paste-able in the post or downloadable here) gives you three files - a configuration and one for the Twitter API and the other for the LinkedIn API. They both rely on the oAuth extension in the PECL library.

Paul Gregg has a quick post informing PHPers that use of some of the resources and groups the LinkedIn service has to offer.

Since LinkedIn opened up its Groups system, there has been a huge growth in the number of groups related to PHP. Some with charters, some without; some with a specific community background and others with a specific regional focus. I am posting this to bring attention to some of them.

Among the groups on his list are ones like LinkedPHPers, PHP Technology Specialists and a PEAR group. There's a lot of recruiters that come through trolling for jobs on some while others ban those posts all together - it just depends on the group.

A quick post to the PEAR blog today points out two groups that, whether you're a PEAR user or not, you might want to be a part of - one on LinkedIn and the other on Facebook.

These groups are primarily for fun, but also act as networking tools to get to know the people who are developing and using PEAR. The official support channels for PEAR are still the mailing lists and bug tracker, and are listed at http://pear.php.net/support.php

To find either, log into your account and search for the term "PEAR". It'll be on the list.

A quick post to the PEAR blog today points out two groups that, whether you're a PEAR user or not, you might want to be a part of - one on LinkedIn and the other on Facebook.

These groups are primarily for fun, but also act as networking tools to get to know the people who are developing and using PEAR. The official support channels for PEAR are still the mailing lists and bug tracker, and are listed at http://pear.php.net/support.php

To find either, log into your account and search for the term "PEAR". It'll be on the list.