1.下载php7

wget -O php7.tar.gz http://cn2.php.net/get/php-7.0.31.tar.gz/from/this/mirror

2.解压php7

tar -xvf php-7.0.31.tar.gz

3.进入php-7.0.31目录

cd php-7.0.31

4.安装php的依赖包

# 直接复制下面一行（不包括本行）
yum install libxml2 libxml2-devel openssl openssl-devel bzip2 bzip2-devel libcurl libcurl-devel libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel gmp gmp-devel libmcrypt libmcrypt-devel readline readline-devel libxslt libxslt-devel

5.编译配置

./configure \
--prefix=/usr/local/php-7.0.31 \
--with-config-file-path=/etc \
--enable-fpm \
--with-fpm-user=nginx \
--with-fpm-group=nginx \
--enable-inline-optimization \
--disable-debug \
--disable-rpath \
--enable-shared \
--enable-soap \
--with-libxml-dir \
--with-xmlrpc \
--with-openssl \
--with-mcrypt \
--with-mhash \
--with-pcre-regex \
--with-sqlite3 \
--with-zlib \
--enable-bcmath \
--with-iconv \
--with-bz2 \
--enable-calendar \
--with-curl \
--with-cdb \
--enable-dom \
--enable-exif \
--enable-fileinfo \
--enable-filter \
--with-pcre-dir \
--enable-ftp \
--with-gd \
--with-openssl-dir \
--with-jpeg-dir \
--with-png-dir \
--with-zlib-dir \
--with-freetype-dir \
--enable-gd-native-ttf \
--enable-gd-jis-conv \
--with-gettext \
--with-gmp \
--with-mhash \
--enable-json \
--enable-mbstring \
--enable-mbregex \
--enable-mbregex-backtrack \
--with-libmbfl \
--with-onig \
--enable-pdo \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--with-zlib-dir \
--with-pdo-sqlite \
--with-readline \
--enable-session \
--enable-shmop \
--enable-simplexml \
--enable-sockets \
--enable-sysvmsg \
--enable-sysvsem \
--enable-sysvshm \
--enable-wddx \
--with-libxml-dir \
--with-xsl \
--enable-zip \
--enable-mysqlnd-compression-support \
--with-pear \
--enable-opcache

6.正式安装

make && make install

7.配置环境变量

vim /etc/profile

在文件末尾追加

PATH=$PATH:/usr/local/php-7.0.31/bin
export PATH

执行命令使环境变量生效

source /etc/profile

8.配置php-fpm

cp php.ini-production /etc/php.ini
cp /usr/local/php-7.0.31/etc/php-fpm.conf.default /usr/local/php-7.0.31/etc/php-fpm.conf
cp /usr/local/php-7.0.31/etc/php-fpm.d/www.conf.default /usr/local/php-7.0.31/etc/php-fpm.d/www.conf
cp /usr/local/php-7.0.31/sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chmod +x /etc/init.d/php-fpm

9.启动php-fpm

/etc/init.d/php-fpm start

安装过程遇到问题

* 1. make: [ext/fileinfo/libmagic/apprentice.lo] 错误 1
解决方法：
./configure启动参数添加 –disable-fileinfo

参考：
https://www.jb51.net/article/109228.htm