There are a number of ways to profile and monitor the performance of PHP code in a development environment, but once it’s been let loose on a production server its extremely difficult to know what’s going on when your app is getting accessed by your users. In March 2009, Facebook released XHProf, a function level profiler that allows you to identify bottlenecks in your application. And it runs on a production server with little overhead. XHProf will provide you with a hierarchical profile of the functions your application calls, allowing you to follow the chain of events that lead...

Posted by Dan PeskinThis post was originally in YouMoz, and was promoted to the main blog because it provides great value and interest to our community. The author's views are entirely his or her own and may not reflect the views of SEOmoz, Inc. Analyzing keyword performance, discovering new keyword opportunities, and determining which keywords to focus efforts on can be painstaking when you have thousands of keywords to review. With keyword metrics coming from all over the place (Analytics, Adwords, Webmaster Tools, etc.), it’s challenging to analyze all the data in one place regularly without having to do a decent...

Applying the right atmosphere and lighting to your artwork can be a tricky task. In this Tuts+ Premium tutorial, author Wojciech Pijecki will explain how to create a mechanically enhanced subject, in a sci-fi environment, using advanced shading techniques in Photoshop. This tutorial is available exclusively to Tuts+ Premium Members. If you are looking to take your photo manipulation and retouching skills to the next level then Log in or Join Now to get started! View the Tutorial Tuts+ Premium Members can login now for instant access to this tutorial. Membership to Tuts+ Premium gets you access to hundreds of exclusive premium...

Posted by Kenny Martin In this week's Whiteboard Friday, Rand goes into depth on how you can optimize your on-page content. Presented here are five advanced tactics that get you thinking beyond the basics of traditional page optimization and set you up to start creating content that's both relevant and unique. How do the phrases on your page relate to one another? Does your page content make your visitors happy? By moving beyond simply making sure those title tags are optimized and scattering a few keywords around, we can produce intelligent content that's not only engaging but gets better rankings too. As promised,...

Posted by Fabian AlvaresThis post was originally in YOUmoz, and was promoted to the main blog because it provides great value and interest to our community. The author's views are entirely his or her own and may not reflect the views of SEOmoz, Inc.Google Analytics affects everyone in search engine marketing (unless you use another analytics package!) but not everyone knows how to take full advantage of it. To take full advantage of it we have to share knowledge and that's what I'm here to do. I'll be sharing some great advanced segments, how to do multiple goal conversion tracking...