PHP8.0的编译安装与使用（详解）

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PHP8.0的正式版早已发布，本文就介绍下它的安装，并使用laravel对比下PHP
安装与配置
本次使用的操作系统Ubuntu 18.04.4 LTS

安装

1.准备必要库

apt-get install -y autoconf libxml2-dev libsqlite3-dev \
libcurl4-openssl-dev libssl-dev libonig-dev libtidy-dev zlib1g-dev

3.解压安装

tar php-8.0.0.tar.gzcd php-8.0.0
./configure --prefix=/opt/php8 --with-config-file-path=/opt/php8/etc \
--enable-fpm --enable-mysqlnd --enable-opcache --enable-pcntl \
--enable-mbstring --enable-soap --enable-zip --enable-calendar \
--enable-bcmath --enable-exif --enable-ftp --enable-intl --with-mysqli \
--with-pdo-mysql --with-openssl --with-curl --with-gd --with-gettext \
--with-mhash --with-openssl --with-mcrypt --with-tidy --enable-wddx \
--with-xmlrpc --with-zlibmakemake installcp php.ini-production /opt/php/etc/php.inicd /opt/php8/etccp php-fpm.conf.default php-fpm.confcp ./php-fpm.d/www.conf.default ./php-fpm.d/www.conf

4.做个软连接

ln -s /opt/php8/bin/php /usr/bin/php8

5.安装composer

cd /opt/php8/bin/curl -sS https://getcomposer.org/installer | php8ln -s /opt/php8/bin/composer.phar /usr/bin/composer8
composer8 config -g repo.packagist composer https://mirrors.aliyun.com/composer/

6.添加一个php8.0的system service

vim /lib/systemd/system/php8.0-fpm.service

内容如下

[Unit]
Description=The PHP 8.0 FastCGI Process Manager
Documentation=man:php-fpm8.0(8)
After=network.target

[Service]
Type=simple
PIDFile=/var/run/php8.0-fpm.pid
ExecStart=/opt/php8/sbin/php-fpm --nodaemonize --fpm-config /opt/php8/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID
[Install]
WantedBy=multi-user.target

配置

fpm-fpm，php.ini配置

和PHP7一样，注意下用户权限

opcache配置

PHP8多了一个jit配置，如下

[opcache]
zend_extension=opcache.so
opcache.enable=1
opcache.jit_buffer_size=100M
opcache.jit=1255

启动

systemctl start php8.0-fpm

laravel

创建一个laravel项目【推荐：laravel视频教程】

cd /opt/web
composer8 create-project --prefer-dist laravel/laravel php8

配置一下.env文件

nginx配置

nginx的配置和PHP7的一致

server {
listen 94;

access_log  /tmp/test94.log main;

root /opt/web/php8/public;
index index.php index.html index.htm;

location / {
    try_files $uri $uri/ /index.php?$query_string;
}

location ~ \.php {
    fastcgi_pass unix:/run/php/php8.0-fpm.sock;
    fastcgi_index /index.php;

    include fastcgi_params;

    fastcgi_split_path_info       ^(.+\.php)(/.+)$;
    fastcgi_param PATH_INFO       $fastcgi_path_info;
    fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}
}
添加一个接口
laravel7的路由写法在laravel8中有点问题，改下RouteServiceProvider.php的写法。
 比如API路由,将$this->namespace改为App\Http\Controllers\Api。
public function boot()
{
$this->configureRateLimiting();

    $this->routes(function () {
        Route::prefix('api')
            ->middleware('api')
    ->namespace('App\Http\Controllers\Api')
            ->group(base_path('routes/api.php'));

        Route::middleware('web')
            ->namespace($this->namespace)
            ->group(base_path('routes/web.php'));
    });
}

其他一样，不用修改。
加个测试接口看看：
Route::get('/test','WxController@test');
test接口查一条数据并返回
<?phpnamespace App\Http\Controllers\Api;use App\Models\WareHouses;use Illuminate\Foundation\Auth\Access\AuthorizesRequests;use Illuminate\Foundation\Bus\DispatchesJobs;use Illuminate\Foundation\Validation\ValidatesRequests;use Illuminate\Http\Request;use Illuminate\Routing\Controller as BaseController;class WxController extends BaseController{
use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

public function test(Request $request)
{
    return WareHouses::find(1)->toarray();
}}

对比测试PHP7
本次使用PHP7.3，接口代码和PHP8一致，两者都开启opcache。
服务器配置是1核2G，用ab简单测试下。
ab -n 100 -c 10
PHP7.3的测试结果如下：
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 192.168.10.10 (be patient).....done
Server Software:        nginx/1.14.0
Server Hostname:        192.168.10.10
Server Port:            94
Document Path:          /api/test
Document Length:        255 bytes
Concurrency Level:      10
Time taken for tests:   0.400 seconds
Complete requests:      10
Failed requests:        0
Total transferred:      5720 bytes
HTML transferred:       2550 bytes
Requests per second:    25.00 [#/sec] (mean)
Time per request:       399.994 [ms] (mean)
Time per request:       39.999 [ms] (mean, across all concurrent requests)
Transfer rate:          13.97 [Kbytes/sec] received
Connection Times (ms)
min  mean[+/-sd] median   max
Connect:        8   10   2.1     11      13
Processing:   101  159  42.8    174     228
Waiting:      101  159  42.8    174     228
Total:        114  170  42.0    186     235
Percentage of the requests served within a certain time (ms)
50%    186
66%    186
75%    197
80%    219
90%    235
95%    235
98%    235
99%    235
100%    235 (longest request)
PHP8.0的测试结果如下：
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 192.168.10.10 (be patient).....done
Server Software:        nginx/1.14.0
Server Hostname:        192.168.10.10
Server Port:            94
Document Path:          /api/test
Document Length:        255 bytes
Concurrency Level:      10
Time taken for tests:   2.441 seconds
Complete requests:      100
Failed requests:        33
(Connect: 0, Receive: 0, Length: 33, Exceptions: 0)
Non-2xx responses:      33
Total transferred:      268489 bytes
HTML transferred:       234720 bytes
Requests per second:    40.97 [#/sec] (mean)
Time per request:       244.096 [ms] (mean)
Time per request:       24.410 [ms] (mean, across all concurrent requests)
Transfer rate:          107.42 [Kbytes/sec] received
Connection Times (ms)
min  mean[+/-sd] median   max
Connect:        7   15  18.1     10     132
Processing:    47  210 224.4    106     817
Waiting:       17  118 107.4    101     787
Total:         55  226 222.1    122     828
Percentage of the requests served within a certain time (ms)
50%    122
66%    137
75%    164
80%    289
90%    640
95%    809
98%    820
99%    828
100%    828 (longest request)
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