Introduce php7

안정수
@ﬁndstar
내가 아는
Laravel Framework를
소개합니다.PHP7 으로 뛰어들기

안정수
Xpressengine 개발
PHP, Java, Objective-c, react.js
@ﬁndstar
발표자 소개

1. PHP7 is coming
2. Performance
3. New features
4. PHP 버전 이야기
5. Migration
목차

1. PHP7 is Coming
PHP 7 Is Coming
Are your Web Application Ready?

1-1. PHP7?
2015. 10월 PHP7이 나옵니다!
(현재 RC1)

PHP5.4
PHP5.5
PHP5.6
PHP6
PHP7
1-2. PHP6는 어디로 갔나요?
PHP6 는 없어요....

1-2. PHP6 망!
Unicode 지원등등..... 진행하다가 GG

1-3. PHP-NG(next generation)
PHP-NG : 원래 별도의 브랜치
=> 7.0 됨
주된 내용은 : PHP 리팩토링!

1-4. PHP7 internal?
Zend engine 3.0
Smaller data structures
Fewer allocations
Less indirection

1-5. ZVAL
PHP5 PHP7
ZVAL 32 bytes 16 bytes
HashTable 72 bytes 56 bytes
object 96 bytes 40 bytes

1-6. Memory management
Less heap, more stack
Redevelop a new heap and optimize
Cpu cache friendly

1-6. XE 에서 체험해보세요.
demo.xpressengine.com

3-1. Benchmark Test
XE1 - Board ab -k -c 50 -n 10000 http://xe1.app/

3-2. Benchmark Env
2012 mid Macbook Pro Retina
Vagrant Rasmus Image

3-3. Benchmark Result
0
30
60
90
120
PHP 5.4 PHP 5.5 PHP 5.6 PHP 7.0
-1.66% 2.21% 40.11%
Request / Sec
80.6 79.2 80.9
113.34
XE - 게시판 목록 benchmark

3-5. 공식 Benchmark 4.4 ~ 7.0
짧은게 좋은겁니다..
0.8 PHP 7.0
참고 링크

3-6.WP - XE
0
30
60
90
120
PHP 5.6 PHP 7.0
WP 4.2.4
XE WP 4.2.4
XE
40.11%
102.4%
Requests / Sec

3-7. Local Composer
composer create-project laravel/laravel
php 5.6 : Memory usage: 160.27MB (peak: 222.83MB)
php 7.0 : Memory usage: 121.91MB (peak: 170.53MB)
23.42% 감소

3-8.Wordpress
워드 프레스 사이트가 php7 으로 구동환경을 바꾸었더니
CPU 자원 사용율이 72% 감소함

3-9. 결론
PHP7 = php5.6
PHP7 = php5.0
X 2
X 14
Speeeeeeeeeeeeed UP!
참고 링크

3-1. Scalar type
function add(int $a, int $b) {
return $a + $b
}
echo add(1, 2); // 3
echo add(1.2, 2); // 3

3-1. Scalar type
declare(strict_types=1);
function add(int $a, int $b) {
return $a + $b
}
echo add(1, 2); // 3
echo add(1.2, 2); // TypeException

3-2. Return type
function add(int $a, int $b) : int {
return $a + $b
}
echo add(1, 2);

3-3. Spaceship operator
echo 2 <=> 2; // 0
echo 2 <=> 3; // -1
echo 2 <=> 1; // 0

3-3. Spaceship operator
function compareValue($a, $b){
return ($a < $b ) ? -1 : ( ($a > $b ) ? 1 : 0 );
}
function compareValue2($a, $b){
return $a <=> $b;
}

3-4. Engine Exceptions
BaseException abstract
EngineException
ParseException
Exception
ErrorException
RuntimeException
fatals 대신 Exception

3-4. Engine Exceptions
class A {
public function t(){
return 't called';
}
}
$testa = new A();
echo $testa->aaa();

3-5. Group namespace
use BarLibBarFoo{
ClassA,
ClassB,
ClassC,
ClassD as FooFoo
};

3-6. Null Coalesce Operator
$username = isset($a)? $a :‘foo’;
$username = $a?? ‘foo’;

3-7. Closure::call
class Foo{
public $bar;
}
$foo = new Foo;
$foo->bar = 10;
$clo = function($a) {
print_r($this->bar + $a );
};
$clo->call($foo, 10);

3-8.Anonymous class
var_dump(new class(){});
object(class@anonymous)#1 (0) {
}

3-9. Non static method call
class A{
function foo() { var_dump($this); }
}
class B{
function bar(){ A::foo(); }
}
$b = new B;
$b->bar();

4-3 지금 PHP 5.3, 5.4 쓰시나요?

4-4 배포판의 보안 지원
CentOS 5.x php 5.3 2017 년 3월
CentOS 6.x php 5.3 2020년 11월
CentOS 7.x php 5.4 2024년 6월
Ubuntu 10.04 LTS php 5.3 , 지원중단.
Ubuntu 12.04 LTS php 5.3 2017년 4월
Ubuntu 14.04 LTS php 5.5.9

4-5 요약
5.3 과 5.4 를 사용중이시라면
버전을 올리시는게 좋습니다.

5. Migration
MISSION MIGRATION

5-1. Migration
in PHP 7 Doctrines..
- Do not fall into a “Python2VS Python3” war
버전이 올라가도 하위 호한성을 유지합니다.

5-2. Removed
ereg
mssql
mysql
sybase_ct
aolserver, apache,
apache_hooks, apache2ﬁlter,
caudium, continuity
isapi, milter, nsapi,
phttpd, pi3web,
roxen, thttpd,
tux, webjames
Extensions SAPI

5-3. Removed
<% %>
<%=
<script language=php>
</script>
<? 와 <?= 는 없어지지 않습니다.

5-3. Removed
call_user_method()
call_user_method_array()
call_user_func()
call_user_func_array()

5-5. Migration
http://php.net/manual/en/migration70.php

5-6. Migration Assistant Report
https://github.com/Alexia/php7mar

끝
새로운 모습의 PHP7을 기대해 봅니다

참고
[php7]
http://php.net/manual/en/migration70.php
http://devzone.zend.com/4693/php-7-glance/
[slideshare]
http://www.slideshare.net/zymsys/new-in-php-7?related=2
http://www.slideshare.net/jpauli/php7-is-coming?next_slideshow=1
[php internal]
https://nikic.github.io/2015/05/05/Internal-value-representation-in-PHP-7-part-1.html
https://nikic.github.io/2015/06/19/Internal-value-representation-in-PHP-7-part-2.html
http://nikic.github.io/2014/12/22/PHPs-new-hashtable-implementation.html
[migration assistant report]
https://github.com/Alexia/php7mar

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