原文地址：https://mengkang.net/1019.html
PHP7.2 更新内容
https://github.com/php/php-src/blob/php-7.2.0RC3/UPGRADING
从官方给的文档中，我似乎没有看到关于整体性能方面的修改。
鸟哥点评 PHP7.2 相对于 PHP7.1 主要优化也是在 opcache 。
服务器配置
2核 Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
内存 4G
系统 Centos 6.2
gcc 4.4.7安装
# http://hk1.php.net/get/php-7.1.10.tar.gz/from/this/mirror
$ ./configure --prefix=/data/local/php71 --with-config-file-path=/data/local/php71/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir=/usr/local/freetype --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-intl --enable-pcntl --with-mcrypt --enable-ftp --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --disable-fileinfo --enable-opcache --with-xsl# https://downloads.php.net/~remi/php-7.2.0RC3.tar.gz
$ ./configure --prefix=/data/local/php72 --with-config-file-path=/data/local/php72/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir=/usr/local/freetype --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-intl --enable-pcntl --enable-ftp --with-gd --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --disable-fileinfo --enable-opcache --with-xsl$ /data/local/php71/bin/php -v
PHP 7.1.10 (cli) (built: Oct 8 2017 16:08:01) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies
$ /data/local/php72/bin/php -v
PHP 7.2.0RC3 (cli) (built: Oct 8 2017 18:11:35) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.2.0-dev, Copyright (c) 1998-2017 Zend Technologiesphp.ini 配置
仅供测试，非生产环境使用，摘录自 http://www.laruence.com/2016/12/18/3137.html
engine = On
short_open_tag = Off
realpath_cache_size = 2M
max_execution_time = 86400
memory_limit = 1024M
error_reporting = 0
display_errors = 0
display_startup_errors = 0
log_errors = 0
default_charset = "UTF-8"
[opcache]
zend_extension=opcache.so
opcache.enable=1
opcache.enable_cli=1
opcache.optimization_level=-1
opcache.fast_shutdown=1
opcache.validate_timestamps=1
opcache.revalidate_freq=60
opcache.use_cwd=1
opcache.max_accelerated_files=100000
opcache.max_wasted_percentage=5
opcache.memory_consumption=128
opcache.consistency_checks=0
opcache.huge_code_pages=1纯 CPU 基准测试
基于Zend/bench.php的脚本测试
未开启 opcache
$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total 1.381
Total 1.416
Total 1.374
Total 1.366
Total 1.430
Total 1.394
Total 1.394
Total 1.369
Total 1.377
Total 1.358
# 取平均值 1.3859
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total 1.448
Total 1.444
Total 1.445
Total 1.458
Total 1.440
Total 1.447
Total 1.486
Total 1.433
Total 1.449
Total 1.464
# 取平均值 1.4514开启 opcache 之后
$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total 0.794
Total 0.797
Total 0.798
Total 0.806
Total 0.808
Total 0.793
Total 0.814
Total 0.846
Total 0.859
Total 0.818
# 取平均值 0.8133
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total 0.779
Total 0.774
Total 0.765
Total 0.772
Total 0.764
Total 0.769
Total 0.779
Total 0.839
Total 0.784
Total 0.842
# 取平均值 0.7867在本次测试中，未开启opcache的情况下，php7.2 性能反而有些下降，开启opcache之后，性能追赶上来，比php7.1略有提升。所以更应该开启opcache了。
基于Zend/micro_bench.php的脚本测试
未开启 opcache
$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total 5.588
Total 5.689
Total 5.652
Total 5.702
Total 5.668
Total 5.641
Total 5.622
Total 5.580
Total 5.635
Total 5.588
# 取平均值 5.6365
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total 5.924
Total 5.597
Total 5.553
Total 5.579
Total 5.591
Total 5.523
Total 5.518
Total 5.503
Total 5.494
Total 5.558
# 取平均值 5.584开启 opcache
$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total 4.369
Total 4.379
Total 4.352
Total 4.370
Total 4.375
Total 4.397
Total 4.311
Total 4.361
Total 4.313
Total 4.373
# 取平均值 4.36
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total 3.711
Total 3.711
Total 3.712
Total 3.734
Total 3.700
Total 3.712
Total 3.705
Total 3.769
Total 3.785
Total 3.695
# 取平均值 3.7234在本次测试中，未开启opcache的情况下，php7.2 性能比php7.1 略有提升，开启opcache之后，php7.2比php7.1有很大的提升。
图表呈现
| 汇总 | bench.php | bench.php + opcache | micro_bench.php | micro_bench.php + opcache |
|---|---|---|---|---|
| PHP7.1 | 1.3859 | 0.8133 | 5.6365 | 4.3600 |
| PHP7.2 | 1.4514 | 0.7867 | 5.5840 | 3.7234 |
软件应用测试
配置说明
2核 Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
内存 4G
系统 Centos 6.2
nginx 1.10.1
mysql 5.5.28
wordpress 4.8.1考虑到该服务器上已经在运行我的博客等其他服务，所以php-fpm子进程数只配置了15个，在相同配置文件的条件下对比。
# php-fpm 简单配置，仅供测试
[global]
pid = /data/local/php7{x}/var/run/php-fpm.pid
error_log = /data/log/php7{x}-fpm.log
log_level = notice
[www]
listen = /tmp/php7{x}-cgi.sock
listen.backlog = -1
listen.allowed_clients = 127.0.0.1
listen.owner = www
listen.group = www
listen.mode = 0666
user = www
group = www
pm = static
pm.max_children = 15wordpress 压测
未开启 opcache
# php7.1
Concurrency Level: 10
Time taken for tests: 8.696 seconds
Complete requests: 100
Failed requests: 0
Write errors: 0
Total transferred: 5215300 bytes
HTML transferred: 5189300 bytes
Requests per second: 11.50 [#/sec](mean)
Time per request: 869.637 [ms](mean)
Time per request: 86.964 [ms](mean, across all concurrent requests)
Transfer rate: 585.65 [Kbytes/sec] received# php7.2
Concurrency Level: 10
Time taken for tests: 8.528 seconds
Complete requests: 100
Failed requests: 0
Write errors: 0
Total transferred: 5215500 bytes
HTML transferred: 5189300 bytes
Requests per second: 11.73 [#/sec](mean)
Time per request: 852.793 [ms](mean)
Time per request: 85.279 [ms](mean, across all concurrent requests)
Transfer rate: 597.24 [Kbytes/sec] received可以看到在未开启opcache的情况下，性能非常糟糕，10个并发的情况下，每个请求的响应时间已经非常长了，没有必要继续增加并发数了。
开启 opcache 之后
| 汇总 | 7.1 Requests per second (每秒) | 7.1 Time per request (ms) | 7.2 Requests per second (每秒) | 7.2 Time per request (ms) |
|---|---|---|---|---|
| c10 n100 | 60.63 | 164.939 | 70.05 | 142.762 |
| c20 n200 | 66.27 | 301.803 | 70.74 | 282.719 |
| c30 n300 | 66.50 | 451.121 | 70.89 | 423.2 |
| c40 n400 | 67.95 | 588.683 | 70.6 | 566.608 |
在开启opcache 之后，相对之前未开启的情况性能简直天壤之别。相比之下php7.2在wordpress压测上，QPS 稳定在70+ 相对php7.1 增加不少。
测试结果和配置参数以及服务器配置有关，仅供对比php7.1与7.2的性能。
其他让你的 PHP 更快的方式，请参考@Laruence http://www.laruence.com/2015/12/04/3086.html
