Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Upgrading from PHP 5.3 to 5.5
Search
Glen Mailer
October 05, 2013
Programming
1
1.2k
Upgrading from PHP 5.3 to 5.5
A small talk on the experiences gained from migrating from PHP 5.3 to 5.5.
Glen Mailer
October 05, 2013
Tweet
Share
More Decks by Glen Mailer
See All by Glen Mailer
Are you afraid of dependencies?
glenjamin
0
120
How to React Appropriately
glenjamin
1
520
Bumping our Stack to PHP 5.5
glenjamin
0
240
Message Queues for Everyone
glenjamin
1
170
Messages queues don't need to be scary.
glenjamin
1
110
Other Decks in Programming
See All in Programming
複雑化したリポジトリをなんとかした話 pipenvからuvによるモノレポ構成への移行
satoshi256kbyte
1
760
Advance Your Career with Open Source
ivargrimstad
0
330
ИИ-Агенты в каждый дом – Алексей Порядин, PythoNN
sobolevn
0
150
Model Pollution
hschwentner
1
180
iOSアプリの信頼性を向上させる取り組み/ios-app-improve-reliability
shino8rayu9
0
150
AI Coding Meetup #3 - 導入セッション / ai-coding-meetup-3
izumin5210
0
580
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
nrslib
3
370
そのpreloadは必要?見過ごされたpreloadが技術的負債として爆発した日
mugitti9
2
3k
2025年版 サーバーレス Web アプリケーションの作り方
hayatow
23
25k
Pythonスレッドとは結局何なのか? CPython実装から見るNoGIL時代の変化
curekoshimizu
4
1.3k
タスクの特性や不確実性に応じた最適な作業スタイルの選択(ペアプロ・モブプロ・ソロプロ)と実践 / Optimal Work Style Selection: Pair, Mob, or Solo Programming.
honyanya
3
140
Local Peer-to-Peer APIはどのように使われていくのか?
hal_spidernight
2
450
Featured
See All Featured
Faster Mobile Websites
deanohume
310
31k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
188
55k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
The World Runs on Bad Software
bkeepers
PRO
71
11k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
12
1.2k
Making the Leap to Tech Lead
cromwellryan
135
9.5k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6.1k
How To Stay Up To Date on Web Technology
chriscoyier
791
250k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
140
34k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Site-Speed That Sticks
csswizardry
11
880
Unsuck your backbone
ammeep
671
58k
Transcript
None
Glen Mailer
The Codebase
First commit April 2010 60k commits since
9300 PHP files 690k lines of code According to git
and cloc
10 releases a week 35 active committers 10 concurrent streams
1 deployable
The Platform
8 Test Environments 1 Staging Environment 2 Live Environments
74 Live PHP boxes
1300 req/s peak 500k uniques/week
Why?
Using basically the same PHP version as the first commit
with security patches
PHP 5.3 is dead
Bug fixes Performance
New Features! short array syntax traits $this in closures yield
finally
but no smoking gun
Bug #64827 GC causes segfaults
The Plan
Upgrade a dev box Support 5.3 and 5.5 Pass all
tests Upgrade 1 Test env Upgrade CI Upgrade Test & Staging Incrementally Upgrade Live
Vagrant Chef Unit Tests Acceptance Tests
Hack hack hack...
3 days later
What changed?
APC becomes OPcache and APCu
Check for new function, fall back to old one if
(function_exists('opcache_reset')) { opcache_reset(); } else { apc_clear_cache(); }
“The PHP api will retain compatibility with APC, as will
common configuration options, providing a drop in replacement.” APCu
Not a drop in replacement
APCu 4.0.1 APCu 4.0.2
No more mysql_
It will not be missed
preg_replace /e becomes preg_replace_callback
(string) array() Now raises a warning Still returns “Array”
Type-checked function function inc($int) { if (!is_int($int)) { throw new
InvalidArgumentException( 'Expected int, got: ' . $int ); } return $int + 1; }
Unit test for type-checked function /** * @dataprovider provideIncInvalid */
function testIncRejectsInvalid($a) { try { inc($a); $this->fail('Expected exception'); } catch (InvalidArgumentException $ex) {} } function provideIncInvalid() { return array( null, true, "string", array() ); }
Simplest fix throw new InvalidArgumentException( 'Expected int, got: ' .
json_encode($int) );
$a = "string”; $a['index']; Now raises a warning
// protected $a; ++$this->a Now raises a warning
Progress
Upgrade a dev box Support 5.3 and 5.5 Pass all
tests Upgrade 1 Test env Upgrade CI Upgrade Test & Staging Incrementally Upgrade Live
Upgrade a dev box Support 5.3 and 5.5 Pass all
tests Upgrade 1 Test env Upgrade CI Upgrade Test & Staging Incrementally Upgrade Live
What now?
Finish Migrating Live
See if the hard to reproduce failures have stopped
Start using new features!
Keep up to date
You should upgrade too!
Fin.
Questions?
@glenathan https://joind.in/9473