You may already be familiar with Git, but did you know that it can rewrite time itself? GitHubber Ben Straub explains all in this month's issue, which also features tutorials on extracting XML data from RSS, using Composer to manage project dependencies and using the PHP Content Repository. If you've ever thought about starting a PHP user group, Atlanta PHP User Group co-organiser Kevin Roberts shares his secrets - plus, there's our regular columns on agile, big data and testing.

Articles included in this latest issue include:

• "Change the Past" (Ben Straub)
• "Why do User Groups?" (Kevin Roberts)
• "Sprint Retrospective Primer" (Steffan Surdek)
• "Urban Legends and Error Handling" (Stefan Priebsch)
• "Managing your project's dependencies with Composer" (Jefersson Nathan de O. Chaves)

As always, this issue is available free of charge and can be downloaded directly from their site.

• "The Power of PECL" by Simon Holywell
• "Be 'ready' if you want to be done!" by Steffan Surdek
• "All Data is Relational" by Cory Isaacson
• "Fixing PHP Production Problems with APM" by Dan Delany and Chris Kelly
• "Trust" by Sebastian Bergmann

You can download your copy for free from their site and catch up on back issues.

• "PHP in the Cloud" By Frédéric Harper
• "Develop your Agile mindset" By Steffan Surdek
• "Database Indexing part 2" By Cory Isaacson
• "Presenting For Geeks eBook teaser" By Dirk Haun
• "Level Crossings and Traffic Jams" By Stefan Priebsch

As always, you can pick up this issue for free by either registering or logging into your account. You can also get the back issues from the site too for more great reading.

• Building an Identity Extraction Engine in PHP (Jonathan LeBlanc)
• 5 Deadly Programming Sins (Michael Stowe)
• Physical Security Fail (Arne Blankerts)
• Database Indexing (Cory Isaacson)

You can also download previous issues of the magazine for free after registering or logging in to your account.

• Todd Lombardo on user context
• Stefan Priebsch on data and persistence
• Patrick Allaert about data structures
• June Henriksen on the human side of programming

You can find out more about this issue (and go download your free copy) on the Web & PHP site. There's also seven previous issues, all free for download (PDF format)!

• Introduction into scaling for Big Data: Cory Isaacson's new column
• What can developers learn from the road? - By Arne Blankerts
• How to be an open source rockstar in 7 easy steps - By Jen Kramer
• PHP security for the real world - By Michael Stowe
• Developing Web Applications in Haskell - By Patrick Brisbin
• Speed up your applications using IIS & WinCache - By Arno Hollosi

You can download this latest issue for free as a PDF as well as picking up the past 6 issues with some great PHP-related content inside.

• "Social Authentication with Zend Framework 2" by Nicholas Calugar
• "A modern approach to object creation in JavaScript" by Marco Emrich
• Sebastian Bergmann discussing reliability in software engineering
• Scriptable sockets with ZeroMQ by Louren Naude

You can download this latest issue for free from the Web & PHP site and pick up the other previous issues while you're there!

• The "#Trending" column (hot and not in the PHP+web communities)
• An interview with Matthew Weier O'Phinney
• A wrapup of the International PHP Conference Spring 2012
• Arne Blankerts on password handling
• HTML5 Security considerations

Additionally, starting with this issue, you can also download previous issues of the magazine on their iPad application (for $0.99 per issue). The standard PDFs of each issue are still available for free, however. You can get this latest issue here.