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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PHP7【推荐：PHP视频教程】

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

2.去官网下载8.0正式版 https://www.php.net/releases/8.0/en.php

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/composer8composer8 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 ManagerDocumentation=man:php-fpm8.0(8)After=network.target[Service]Type=simplePIDFile=/var/run/php8.0-fpm.pidExecStart=/opt/php8/sbin/php-fpm --nodaemonize --fpm-config /opt/php8/etc/php-fpm.confExecReload=/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.soopcache.enable=1 opcache.jit_buffer_size=100Mopcache.jit=1255

启动

systemctl start php8.0-fpm

创建一个laravel项目【推荐：laravel视频教程】

cd /opt/webcomposer8 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。

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.conf0

其他一样，不用修改。

加个测试接口看看：

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.conf1

test接口查一条数据并返回

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.conf2

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。

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.conf3

PHP7.3的测试结果如下：

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.conf4

PHP8.0的测试结果如下：

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.conf5

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