Compzone.Org :: Podręcznik PHP :: Migrating from PHP 4 to PHP 5

Podręcznik PHP
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Dodatek B. Migrating from PHP 4 to PHP 5

Spis treści
What has changed in PHP 5
Backward Incompatible Changes
CLI and CGI
Migrating Configuration Files
New Functions
New Directives
Databases
New Object Model
Error Reporting

What has changed in PHP 5

PHP 5 and the integrated Zend Engine 2 have greatly improved PHP's performance and capabilities, but great care has been taken to break as little existing code as possible. So migrating your code from PHP 4 to 5 should be very easy. Most existing PHP 4 code should be ready to run without changes, but you should still know about the few differences and take care to test your code before switching versions in production environments.

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Publications about PHP	Początek rozdziału	Backward Incompatible Changes