Over the past decade, the PHP community has progressed through a handful of distinct eras that have each been marked by a focus on specific best practices. This is most evident in the types of talks presented at conferences and user groups and in the articles published by php|architect magazine, PHPDeveloper.org, and the blogs of those whose feeds are distributed through Planet PHP. In thinking through this, I've come up with the following eras I think we, the PHP community, have had over the last ten years. These are in a general order, but eras overlap, and some have lasted longer than others, so there's not a distinct beginning or end to each.

He briefly covers five different areas that PHP has evolved in over the past years: the shift to OOP, web application security, framework use, coding standards/organization and the push for better testing.

With the coming of the testing era, I'm seeing a lot of maturity in our community. The code we write is getting better. We're following standards and best practices. We're implementing a lot of good design principles. [...] I think the decade since PHP 5 was released has brought us to a great place as a community. [...] With each new era, we can't forget what we've learned, though. We must continue teaching and revising these best practices as we learn more.