PHP 4 end of life announcement

PHP.net announced they will discontinue support for PHP 4 at the end of the year because of the upcoming release of PHP 6.

"Please use the rest of this year to make your application suitable to run on PHP 5", is the PHP development team advice.

The article points to PHP migration guide for documentation on migration for PHP 4 to PHP 5. There you could find additional information available in the PHP 5.0 to PHP 5.1 and PHP 5.1 to PHP 5.2 migration guides as well.

To see how PHP 6 is processing you can check the PHP Release Management Wiki.