Php7 hhvm and co

PHP 7, HHVM & CO
#PHPKonf
Istanbul
Pierre Joye

PHP7, hhvm & co
Pierre Joye
@pierrejoye
pierre@php.net
http://www.slideshare.net/pierrej
PHP Core developer
Contributors to numerous OSS projects
Portability fan

PHP7, hhvm & co
Awesome new extension installer
https://github.com/FriendsOfPHP/pickle

PHP7, hhvm & co
What‘s going in the php world?
https://wiki.php.net/rfc/isset_ternary

PHP7, hhvm & co
PHP 5.3
2009 - 2014

PHP7, hhvm & co
PHP 5.4 and 5.5
Security fixes only

PHP7, hhvm & co
PHP 5.4
2012 - 2015

PHP7, hhvm & co
PHP 5.5
2013 - 2016

PHP7, hhvm & co
PHP 5.6.11 is out!

PHP7, hhvm & co
PHP 7.0.0beta2 yesterday!

PHP7, hhvm & co
PHP 7.0 – Future is now

PHP7, hhvm & co
PHP 7.0 – speed++

PHP7, hhvm & co
LIES, DAMN LIES AND BENCHMARKS

PHP7, hhvm & co
Features
• Rewamped Engine
• True 64bit support
• Large string and LFS (Large file support)
• Consistent variables syntax
• Error exception instead of fatal error
• Scalar type declarations
• Zero cost asserts

PHP7, hhvm & co
Features
• Secure RNG
• PHP4 constructors deprecated
• JIT enabled PCRE
• Removed ext/mysql, ext/ereg and more
• New ?? Operator
• New JSON parser
• Many other features, a lot already target 7.1

PHP7, hhvm & co
Error exception instead of fatal error

PHP7, hhvm & co
Error exception
https://wiki.php.net/rfc/catchable-call-to-member-of-non-object
<?php
try {
$x = null;
var_dump($x->method());
// The exception class name is EngineException
// in alpha1
} catch (Error $e) {
// pass
}
echo "Aliven";

PHP7, hhvm & co
Scalar Type Declarations

PHP7, hhvm & co
Scalar Type Declarations
<?php
declare(strict_types = 1);
function add(int $a, int $b) : int {
return $a + $b;
}
$x = add(1, 2);
// The exception class name TypeException
// in alpha1
$y = add(0.1, 0.2); // TypeError exception
https://wiki.php.net/rfc/scalar_type_hints_v5

PHP7, hhvm & co
Null Coalesce Operator (??)

PHP7, hhvm & co
Null Coalesce Operator (??)
<?php
$username = $_GET['user'] ?? 'nobody';
$username = isset($_GET['user']) ? $_GET['user'] : 'nobody';
// Method/function call
$model = Model::get($id) ?? $default_model;
if (($model = Model::get($id)) === NULL) { $model =
$default_model; }
// Chained
$x = NULL; $y = NULL; $z = 3; var_dump($x ?? $y ?? $z);
https://wiki.php.net/rfc/isset_ternary

PHP7, hhvm & co
PHP Language Specification
https://github.com/php/php-langspec

PHP7, hhvm & co
Open & Public Specifications
Competions++

PHP7, hhvm & co
(Most) Focus on Speed

PHP7, hhvm & co
SPEED is NOT SCALE

PHP7, hhvm & co
Scale is Server Side
Architecture (Apps, Ops, Net, …)

PHP7, hhvm & co
My code sucks.

PHP7, hhvm & co
QB
<?php
class OilPaintFilter {
/** @var int32 */ public $levels = 25;
/** @var int32 */ public $filterSize = 5;
/** * @engine qb
*
* @param image $dst
* @param image $src
*
* @local float32[*][r,g,b,a] $bin
* @local float32 $max_intensity
* @local int32 $(current_index|max_index)
* @local int32 $(filter_x|filter_y|filter_offset)
* @local int32 $(x|y|x_limit|y_limit)
* @local int32 $(width|height)
* @local float32[r,g,b,a] $pixel
* @local float32 $multiplier */
public function filter(&$dst, $src) {…

PHP7, hhvm & co
QB
<?php
function calc($n, &$a) {
$b = 18;
while($n) {
$a = $b * $b * $b * $b;
$n--;
}
}
$n = 5000000;
$a = 0;
calc($n, $a); $end = microtime(true);

PHP7, hhvm & co
QB
Source: http://php-qb.net/index.php/2-uncategorised/27-comparing-performance-in-qb-with-hhvm
See http://benchmarksgame.alioth.debian.org/u32/performance.php?test=spectralnorm or other

PHP7, hhvm & co
Zephir
Optimization & code generation
Compilation + optimization
Native execution

PHP7, hhvm & co
Zephir
namespace MyLibrary;
class Filter {
public function alpha(string str) {
char ch;
string filtered = "";
for ch in str {
if (ch >= 'a' && ch <= 'z') || (ch >=
'A' && ch <= 'Z') {
let filtered .= ch;
}
}
return filtered;
}
}

PHP7, hhvm & co
Zephir
<?php
$filter = new MyLibraryFilter();
echo $filter>alpha("01he#l.lo?/1");

PHP7, hhvm & co
PHP Alternative Implementations

PHP7, hhvm & co
PHP Alternative Implementations
• HHVM (native code)
• Recki-ct (native code)
• Phalanger (.net engine)

PHP7, hhvm & co
HHVM
PHP Cache
Parser (AST in 7+)
HHVM Opcodes
Native Code
JIT ~
Cache

PHP7, hhvm & co
PHP
PHP Cache
Parser (AST in 7+)
OpCodes

PHP7, hhvm & co
Recki-CT
PHP Cache
Parser (AST in 7+)
Recki IR
JIT~
Native Code

PHP7, hhvm & co
Recki-ct
php 5.5 Recki-CT hhvm 3.2 hippy-c qb
simple() 139.63357 1.00000 8.30447 7.65693 8.35018
simplecall() 38.99476 FAIL 1.32552 1.00000 FAIL
simpleucall() 54.02041 1.00000 3.52439 1.51072 47.91090
simpleudcall
()
52.14534 1.00000 3.75936 1.41614 47.55259
mandel() 21.26249 1.00000 2.03372 2.11208 FAIL
mandel_typ
ed()
23.16553 1.00000 2.11128 2.09212 3.00061
mandel2() 24.43275 1.00000 2.57704 1.87802 FAIL
mandel2_ty
ped()
23.79989 1.00000 2.90105 1.57193 7.11054

PHP7, hhvm & co
Recki-ct
php 5.5 Recki-CT hhvm 3.2 hippy-c qb
ary(50000) 1.39338 FAIL 1.00000 4.47888 FAIL
ary2(50000) 1.26952 FAIL 1.00000 2.28231 FAIL
ary3(2000) 5.96015 FAIL 1.70997 1.00000 FAIL
fibo(30) 39.48440 1.00000 1.60647 16.40883 FAIL
hash1(50000) 1.70014 FAIL 1.00000 3.27314 FAIL
hash2(500) 2.23648 FAIL 1.00000 1.30044 FAIL
heapsort(2000
0)
3.67800 FAIL 1.00000 4.96699 FAIL

PHP7, hhvm & co
Resources
• http://wiki.php.net/rfc/
• http://zephir-lang.com/
• http://www.slideshare.net/ircmaxell/high-
performance-php-phpnw
• http://talks.php.net/fluent15#/
• https://github.com/google/recki-ct
• http://blog.ircmaxell.com/2014/08/introducing-
recki-ct.html
• https://github.com/chung-
leong/qb/wiki/Introduction

PHP7, hhvm & co
Resources
• https://edit.php.net/
• https://wiki.php.net/rfc/phpng
• https://wiki.php.net/rfc/abstract_syntax_tree
• http://hhvm.com/blog/6323/the-journey-of-a-
thousand-bytecodes
• https://github.com/php/php-
src/blob/master/UPGRADING
• https://github.com/php/php-
src/blob/master/UPGRADING.INTERNALS

PHP7, hhvm & co
Resources
• http://phpdbg.com/
• http://windows.php.net/qa/
• http://qa.php.net/
• http://ongr.io
• http://aka.ms/AzureCodeManiac2015

Php7 hhvm and co

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