O'Reilly has a concise look at the
major features of PHP5: new Object Model, improved MySql support, exceptions, SimpleXML, and SQLite.
Upgrading Syntax up to take advantage of the new features of PHP5 is not planned at the moment, although there are probably numerous places where the readibility of the code would benefit from the newer OOP model, specifically abstract interfaces, and the change to passing objects by reference instead of value.
O'Reilly's ONLamp.com has this cool example: PHP 4.X: $dir = opendir($path); while (false !== ($file = readdir($dir))) { print "$file\n"; } closedir($dir); PHP 5.0 foreach (new DirectoryIterator($path) as $file) { print "$file\n"; } The PHP team is really trying...
Tracked: Jul 27, 12:02