PHP7 & Symfony 2 @ Symfony Barcelona May meetup

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PHP7 & Symfony 2

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That's me! Albert Casademont ulabox.com @acasademont

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HipHop Virtual Machine HipHop for PHP

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PHP6 PHPNG

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¡PHP7!

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but first...

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Get PHP 5.6 PLEASE

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PHP7 a.k.a. PHPNG

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Internals heavily modified data structs (current extensions won't work) call frame optimization new memory manager we finally have an AST! no JIT (yet)

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Internals Immutable arrays PCRE with JIT new JSON parser ...and lots more (watch Dmitry Stogof's talk on PHP7 internals for more!)

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Removed features mysql extension :'( ereg extension ASP style tags ...and many more

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null coalesce https://wiki.php.net/rfc/isset_ternary

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uniform variable https://wiki.php.net/rfc/uniform_variable_syntax

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engine exceptions https://wiki.php.net/rfc/engine_exceptions_for_php7

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return types!!! https://wiki.php.net/rfc/return_types

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scalar type hinting!!! https://wiki.php.net/rfc/scalar_type_hints_v5

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x10

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Scalar type hinting Most wanted feature EVER! 2 flavors: weak & strict declare(strict_types=1); weak => casting strict => error

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However...

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Userland BC breaks New reserved keywords int, float, bool, string, true, false, null Symfony Validator BC Break!! True => IsTrue False => IsFalse Null => IsNull Available in SF >= 2.6.8, 2.3.29 LTS

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Test environment VM Debian 8 1GB RAM, 1 core, SSD ulabox.com sf2 index / product page (prod) sf2 demo bundle (dev), composer update PHP 5.5 / 5.6 / 7.0 opcache.validate_timestamps = 0 opcache.enable_file_override = 1 HHVM 3.7 hhvm.server_stat_cache = 1 No extensions! (APCu) Nginx, Redis, Solr, MySQL

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PHP 5.3 PHP 5.4 PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 0.5 1 1.5 2 2.5 2.22 1.83 1.78 1.75 0.83 0.3 Time (seconds) Bench.php

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PHP 5.3 PHP 5.4 PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 2 4 6 8 10 12 14 13.25 12.75 12.5 12.5 8.25 7.8 Memory consumption (MB) Bench.php

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PHP 5.3 PHP 5.4 PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 5 10 15 20 25 30 35 29.97 29.91 29.17 12.47 17.86 Time (seconds) composer update --profile

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PHP 5.3 PHP 5.4 PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 100 200 300 400 500 600 700 800 900 812 812 812 551 316 Memory consumption (MB) composer update --profile

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 5 10 15 20 25 30 26 24 13 19 Time (milliseconds) SF2 - AcmeDemo

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 2 4 6 8 10 12 10.75 10.75 4.75 0.48 Memory consumption (MB) SF2 - AcmeDemo

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 10 20 30 40 50 60 70 80 90 81 76 44 56 Time (milliseconds) SF2 – ulabox index

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 2 4 6 8 10 12 14 16 18 20 17.25 17.25 12 4.19 Memory consumption (MB) SF2 – ulabox index

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 20 40 60 80 100 120 109 103 60 72 Time (milliseconds) SF2 – ulabox product

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PHP 5.5 PHP 5.6 PHP 7.0 HHVM 3.7 0 5 10 15 20 25 20.75 20.5 14 5 Memory consumption (MB) SF2 – ulabox product

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Resources https://wiki.php.net/phpng https://wiki.php.net/rfc http://news.php.net/php.internals https://joind.in/talk/view/12068 https://atlas.hashicorp.com/rasmu s/boxes/php7dev https://github.com/php/php-src

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gràcies ;)