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linux centos安裝PHP7的方法：1、通過“yum -y install”命令安裝EPEL源，REMI源以及Yum源管理工具；2、使用“yum -y”命令安裝PHP；3、查看PHP安裝包；4、修改php.ini配置；5、通過“systemctl restart php74-php-fpm”重啟“php74-php-fpm”即可。

一、安裝前庫文件和工具準備

1、首先安裝 EPEL 源

yum -y install epel-release

2.安裝 REMI 源

yum -y install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

3.安裝 Yum 源管理工具

yum -y install yum-utils

二、安裝PHP

1.安裝PHP

立即學習“PHP免費學習筆記（深入）”；

yum -y --enablerepo=remi install php74-php php74-php-fpm php74-php-bcmath php74-php-ctype php74-php-curl php74-php-dom php74-php-gd php74-php-hash php74-php-iconv php74-php-intl php74-php-mbstring php74-php-pdo_mysql php74-php-simplexml php74-php-soap php74-php-xsl php74-php-zip php74-php-xml php74-php-sockets php74-php-session php74-php-snmp php74-php-mysql php74-php-cli php74-php-json php74-php-mcrypt php74-php-mysqlnd php74-php-pecl-crypto php74-php-pecl-mcrypt php74-php-pecl-geoip php74-php-recode ?php74-php-xmll

2.重啟一下計算機，不然有可能無法啟動php

reboot

3.設置開機啟動、運行服務

systemctl start php74-php-fpm  systemctl enable php74-php-fpm

三、設置PHP

1.查看PHP安裝包

[root@VM-0-5-centos ~]# rpm -qa | grep php  oniguruma5php-6.9.7.1-1.el7.remi.x86_64  php74-php-common-7.4.24-1.el7.remi.x86_64  php74-php-7.4.24-1.el7.remi.x86_64  php74-php-xml-7.4.24-1.el7.remi.x86_64  php74-php-pdo-7.4.24-1.el7.remi.x86_64  php74-php-pecl-mysql-1.0.0-0.23.20190415.d7643af.el7.remi.x86_64  php74-php-fpm-7.4.24-1.el7.remi.x86_64  php74-php-bcmath-7.4.24-1.el7.remi.x86_64  php74-php-pecl-recode-1.0.0~DEV.20190723-4.el7.remi.x86_64  php74-runtime-1.0-3.el7.remi.x86_64  php74-php-mysqlnd-7.4.24-1.el7.remi.x86_64  php74-php-pecl-crypto-0.3.2-1.el7.remi.x86_64  php74-php-soap-7.4.24-1.el7.remi.x86_64  php74-php-intl-7.4.24-1.el7.remi.x86_64  php74-php-pecl-zip-1.19.5-1.el7.remi.x86_64  php74-php-json-7.4.24-1.el7.remi.x86_64  php74-php-cli-7.4.24-1.el7.remi.x86_64  php74-php-sodium-7.4.24-1.el7.remi.x86_64  php74-php-pecl-geoip-1.1.1-11.el7.remi.x86_64  php74-php-snmp-7.4.24-1.el7.remi.x86_64  php74-php-pecl-mcrypt-1.0.4-1.el7.remi.x86_64  php74-php-gd-7.4.24-1.el7.remi.x86_64  php74-php-mbstring-7.4.24-1.el7.remi.x86_64

2.找到：php74-php-fpm-7.4.24-1.el7.remi.x86_64安裝位置

[root@VM-0-5-centos ~]# rpm -ql php74-php-fpm-7.4.24-1.el7.remi.x86_64/etc/logrotate.d/php74-php-fpm/etc/opt/remi/php74/php-fpm.conf/etc/opt/remi/php74/php-fpm.d/etc/opt/remi/php74/php-fpm.d/www.conf/etc/opt/remi/php74/sysconfig/php-fpm/etc/systemd/system/php74-php-fpm.service.d/opt/remi/php74/root/usr/sbin/php-fpm/opt/remi/php74/root/usr/share/doc/php74-php-fpm-7.4.24/opt/remi/php74/root/usr/share/doc/php74-php-fpm-7.4.24/php-fpm.conf.default/opt/remi/php74/root/usr/share/doc/php74-php-fpm-7.4.24/www.conf.default/opt/remi/php74/root/usr/share/fpm/opt/remi/php74/root/usr/share/fpm/status.html/opt/remi/php74/root/usr/share/licenses/php74-php-fpm-7.4.24/opt/remi/php74/root/usr/share/licenses/php74-php-fpm-7.4.24/fpm_LICENSE/opt/remi/php74/root/usr/share/man/man8/php-fpm.8.gz/usr/lib/systemd/system/php74-php-fpm.service/var/opt/remi/php74/lib/php/opcache/var/opt/remi/php74/lib/php/session/var/opt/remi/php74/lib/php/wsdlcache/var/opt/remi/php74/log/php-fpm/var/opt/remi/php74/run/php-fpm

3.查找php.ini位置：

[root@localhost src]# find /etc/opt/remi/php74 -name php.ini/etc/opt/remi/php74/php.ini

4.編輯/etc/opt/remi/php74/php.ini，替換 ;cgi.fix_pathinfo=1 為 cgi.fix_pathinfo=0 ;

[root@localhost src]# vim /etc/opt/remi/php74/php.ini  cgi.fix_pathinfo=0

5.重啟php74-php-fpm

systemctl restart php74-php-fpm

6.更多操作

systemctl restart php74-php-fpm #重啟  systemctl start php74-php-fpm #啟動  systemctl stop php74-php-fpm #關閉  systemctl status php74-php-fpm #檢查狀態

四、設置PHP軟連接和環境變量

1.建立php程序的軟連接

ln -s /opt/remi/php74/root/usr/bin/php /usr/bin/php

2.修改rc文件
1.當前用戶的環境變量

#如果是使用bash作為shell  vim ~/.bashrc  #增加一行環境變量  export PATH=/opt/remi/php74/root/usr/bin:$PATH  #刷新一下環境變量  source ~/.bashrc

2.修改全局環境變量

vim /etc/profile  export PATH=/opt/remi/php74/root/usr/bin:$PATH

查看 PHP
驗證一下是否安裝成功：

[root@VM-0-5-centos ~]# php -v  PHP 7.4.24 (cli) (built: Sep 21 2021 11:23:11) ( NTS )Copyright (c) The PHP Group  Zend Engine v3.4.0, Copyright (c) Zend Technologies

上面安裝的PHP 只是安裝了部分 PHP 拓展，更多的軟件可見：