War es wirklich?

IBM developerWorks has some articles about what's new in PHP 5.3:

• Changes to the object interface
• Closures and lambda functions
• Namespaces

And even more on the prior changes with PHP 5.2:

• Using the new memory manager
• Using the new input filtering extensions
• Using the new JSON extension
• Using the new ZIP extension
• Tracking file upload progress

More PHP 5 resources:

• A PHP V5 migration guide
• Five common PHP design patterns
• Five more PHP design patterns

And an outlook to PHP