This document discusses upgrading from PHP versions 5.3 and below to PHP 5.6. It provides reasons for upgrading such as improved speed and compatibility with newer libraries. It outlines the PHP migration process and recommends tools for tracking errors during the upgrade. Tips are included for handling sessions and raw POST data differently in PHP 5.6.

2. UPGRADINGTOPHP5.6
LUKA SKUPNJAK, ZGPHP #42

3. WHYUPGRADING

4. WHY UPGRADING - SPEED
image taken from Dmitry Stogov

5. WHY UPGRADING - SPEED
image taken from Dmitry Stogov

6. PHP ≤ 5.3 IS DEAD

7. WHY UPGRADING - CODE
symfony/Console
symfony/DependencyInjection
symfony/EventDispatcher
illuminate/database
domnikl/statsd-php
facebook/facebook-php-sdk-v4
"require": {
"php": ">= 5.5.9"
}
"require": {
"php": ">= 5.5.9"
}
"require": {
"php": ">= 5.4.0"
}
"require": {
"php": ">= 5.4.0"
}
"require": {
"php": ">= 5.4.0"
}
"require": {
"php": ">= 5.4.0"
}

8. HOW TO UPGRADE
php.net migration manual
Upgrade from PHP 5.3 to PHP 5.4
Upgrade from PHP 5.4 to PHP 5.5
Upgrade from PHP 5.5 to PHP 5.6

9. HOW TO UPGRADE - NO DOWNTIME
Upgrade just the part of the server cluster
Fix version specific errors
Upgrade everything
See Tomislav's talk from ZgPHP #41!

10. SENTRY
Single point to track all errors
Supports error filtering and aggregating
One installation manages your test, staging and production servers
Get from Github through Composer

11. SENTRY

12. SENTRY - PRO TIPS
Raven Client captureException method
- add tags to options array (PHP version, server address)
Raven Error Handler handleFatalError method
- add E_DEPRECATED and E_USER_DEPRECATED error handleing

13. EXTRAS - SESSIONS
From PHP 5.6 session data is only written if data has been changed.
This can cause some weird problems, like "randomly" logging out of users
Solution: write something every time
Read more here
$_SESSION['someKey'] = some_changeable_value; // time()

14. EXTRAS - $HTTP_RAW_POST_DATA
Deprecated from PHP 5.6
setting in php.ini defines how data is written in
Solution:
always_populate_raw_post_data
$HTTP_RAW_POST_DATA
always_populate_raw_post_data = ‐1

15. THANK YOU
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