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PHP : Appendices : Migrating from PHP 5.0.x to PHP 5.1.x

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

Key PHP 5.1.x features

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

A complete rewrite of date handling code, with improved timezone support.
Significant performance improvements compared to PHP 5.0.X.
PDO extension is now enabled by default.
Over 30 new functions in various extensions and built-in functionality.
Over 400 various bug fixes.

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History of PHP and related projects
Migrating from PHP 5.1.x to PHP 5.2.x
Migrating from PHP 5.0.x to PHP 5.1.x
Migrating from PHP 4 to PHP 5
Migrating from PHP 3 to PHP 4
Migrating from PHP/FI 2 to PHP 3
Debugging PHP
Configure options
php.ini directives
List of Supported Timezones
Extension Categorization
List of Function Aliases
List of Reserved Words
List of Resource Types
List of Supported Protocols/Wrappers
List of Available Filters
List of Supported Socket Transports
PHP type comparison tables
List of Parser Tokens
Userland Naming Guide

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