Other changes
What has changed in PHP 5.2.x
Appendices
PHP Manual

# Migrating from PHP 5.1.x to PHP 5.2.x

## Inhaltsverzeichnis

- What has changed in PHP 5.2.x
- Backward Incompatible Changes
- New Error Messages
- Changes in PHP datetime support
- New Parameters
- New Functions
- New Methods
- Removed Extensions
- New Extensions
- New Classes
- New Global Constants
- New Class Constants
- New INI Configuration Directives
- Error Reporting
- Other Enhancements

Siehe auch die Migrationsleitfäden für PHP-Versionen 5.0.x, 5.1.x and 5.3.x.

Other changes
What has changed in PHP 5.2.x
Appendices
PHP Manual