Appendix C. Migrating from PHP 5.0.x to PHP 5.1.x

Table of Contents
Key PHP 5.1.x features
Changes in reference handling
Reading []
Integer values in function parameters
Class and object changes
Extensions
Date/time support
Changes in database support
Checking for E_STRICT

Key PHP 5.1.x features

Some of the key features of PHP 5.1.x include: