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下载安装包

有多个安装版本，根据自己的需求可以下载php8的各个版本

https://www.php.net/downloads.php

wget https://www.php.net/distributions/php-8.3.16.tar.gz 

解压下载的php tar源码包

tar -zxvf php-8.3.16.tar.gz

安装所需的一些依赖扩展库

yum -y install   libxml2*   openssl*  libcurl* libjpeg*      libpng*      freetype*      libmcrypt*

安装前的配置

cd php-8.3.16

进入目录，执行以下命令

./configure --prefix=/usr/local/php8 --with-config-file-path=/usr/local/php8/etc --enable-fpm --enable-mysqlnd --with-fpm-user=nginx --with-fpm-group=nginx --with-curl --enable-gd --with-tidy --with-gettext --enable-intl --with-kerberos --with-libdir=lib64 --with-mysqli --enable-ftp --with-openssl --with-pdo-mysql --with-pdo-sqlite --with-pear --disable-fileinfo --with-xsl --with-zlib --with-bz2 --with-mhash --enable-bcmath --enable-mbregex --enable-mbstring --enable-opcache --enable-pcntl --enable-shmop --enable-soap --enable-sockets --enable-sysvsem --enable-sysvshm --enable-xml --enable-calendar --enable-exif

看到这张图，表示执行成功，如果没有，就解决error

继续执行以下命令

make && make install

执行到这里，表示执行成功了

修改配置文件

1、进入php8的安装包

cd php-8.3.16/
cp -a php.ini-production /usr/local/php8/etc/php.ini

进入安装目录

cd /usr/local/php8/etccp -a php-fpm.conf.default php-fpm.conf  cd /usr/local/php8/etc/php-fpm.dcp www.conf.default www.conf

修改www.conf文件

修改端口号，9000 为9001，因为我有两个php版本，还有一个php7

listen = 127.0.0.1:9001
listen.owner = nginx
listen.group = nginx
listen.mode = 0666

配置环境变量

我这里是两个php版本，所以就又增加了一个php8

PATH=$PATH:/usr/local/php7/bin:/usr/local/php7/sbin/:/usr/local/php8/bin:/usr/local/php8/sbin/

保存环境变量，并执行以下命令，让其生效

source /etc/profile

开机自启

# 源码包 php-8.0.24/sapi/fpmcd ./php-8.3.16/sapi/fpmcp php-fpm.service /usr/lib/systemd/system/php-fpm-8.3.16.service
cp init.d.php-fpm /etc/init.d/php8-fpmchmod +x /etc/init.d/php8-fpm 

启动服务

service php8-fpm start
service php8-fpm stop
service php8-fpm restart

创建软连接

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

常见问题

1、checking for icu-uc >= 50.1 icu-io icu-i18n… no

checking for icu-uc >= 50.1 icu-io icu-i18n... no
configure: error: Package requirements (icu-uc >= 50.1 icu-io icu-i18n) were not met:No package 'icu-uc' found
No package 'icu-io' found
No package 'icu-i18n' found

解决方案：

yum  -y install libicu-devel

2、configure: error: Package requirements (oniguruma) were not met:

checking whether to enable multibyte regex support (requires oniguruma)... yes
checking for oniguruma... no
configure: error: Package requirements (oniguruma) were not met:No package 'oniguruma' found

解决方案：

yum -y install oniguruma oniguruma-devel

3、configure: error: Cannot find libtidy

yum -y install libtidy-devel

4、configure: error: Package requirements (libxslt >= 1.1.0) were not met:

yum -y install libxslt-devel

5、error: Package requirements (sqlite3 ＞ 3.7.4) were not met:

yum install sqlite-devel