在安装php前先安装 nginx
1.创建php用户和用户组，并在github下载php7源码
# groupadd -r www && useradd -r -g www -s /bin/false -d /usr/local/php7 -M php
2.安装编译php7时需要的依赖包
# yum -y install libxml2 libxml2-devel openssl openssl-devel curl-devel libjpeg-devel libpng-devel freetype-devel libmcrypt-devel
3.
3.PHP7编译参数的配置
# cd /usr/local/src
# wget http://cn2.php.net/distributions/php-7.1.5.tar.gz
# tar zxvf php-7.1.5.tar.gz
# cd php-7.1.5
4.开始配置
# ./configure --prefix=/usr/local/php7 --exec-prefix=/usr/local/php7 --bindir=/usr/local/php7/bin --sbindir=/usr/local/php7/sbin --includedir=/usr/local/php7/include --libdir=/usr/local/php7/lib/php --mandir=/usr/local/php7/php/man --with-config-file-path=/usr/local/php7/etc --with-mysql-sock=/var/lib/mysql/mysql.sock --with-mcrypt=/usr/include --with-mhash --with-openssl --with-mysql=shared,mysqlnd --with-mysqli=shared,mysqlnd --with-pdo-mysql=shared,mysqlnd --with-gd --with-iconv --with-zlib --enable-zip --enable-inline-optimization --disable-debug --disable-rpath --enable-shared --enable-xml --enable-bcmath --enable-shmop --enable-sysvsem --enable-mbregex --enable-mbstring --enable-ftp --enable-gd-native-ttf --enable-pcntl --enable-sockets --with-xmlrpc --enable-soap --without-pear --with-gettext --enable-session --with-curl --with-jpeg-dir --with-freetype-dir --enable-opcache --enable-redis --enable-fpm --enable-fastcgi --with-fpm-user=www --with-fpm-group=www --without-gdbm --disable-fileinfo
5.开始编译和安装PHP7，相对编译安装MySQL的大量CPU和内存消耗，PHP7的编译安装轻松多了，整个过程大约1个小时左右。
# make clean && make && make install
温馨提示：
部分编译出错的环境请使用
#make ZEND_EXTRA_LIBS='-liconv';
#make install
编译安装完成PHP7！
下载到最后显示下图,PHP 7编译安装成功
安装PHP7 还可参考地址 https://www.cnblogs.com/milton/p/6223813.html
https://blog.csdn.net/qq_29287973/article/details/78125125