步骤如下：
1、安装依赖
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
2、下载PHP源码包
wget http://cn2.php.net/distributions/php-7.0.27.tar.gz
3、配置参数
./configure --prefix=/alidata/server/php-7.0.27 \
--with-apxs2=/alidata/server/httpd-2.4.10/bin/apxs \
--with-curl \
--with-freetype-dir \
--with-gd \
--with-gettext \
--with-iconv-dir \
--with-kerberos \
--with-libdir=lib64 \
--with-libxml-dir \
--with-mysqli \
--with-openssl \
--with-pcre-regex \
--with-pdo-mysql \
--with-pdo-sqlite \
--with-pear \
--with-png-dir \
--with-xmlrpc \
--with-xsl \
--with-zlib \
--enable-fpm \
--enable-bcmath \
--enable-libxml \
--enable-inline-optimization \
--enable-gd-native-ttf \
--enable-mbregex \
--enable-mbstring \
--enable-opcache \
--enable-pcntl \
--enable-shmop \
--enable-soap \
--enable-sockets \
--enable-sysvsem \
--enable-xml \
--enable-zip
4、编译
注意：我这里报错提示“undefined reference to `libiconv_open'”，make 时增加 ZEND_EXTRA_LIBS=’-liconv’ 参数即可，如下
make ZEND_EXTRA_LIBS='-liconv'
5、安装
6、完成安装后需处理
6.1、将 alidata/server/php 软链接设置为 alidata/server/php-7.0.27
cd /alidata/www/server
rm -rf php
ln -s /alidata/server/php-7.0.27 php
6.2、 httpd.conf文件里开启PHP7模块
不开启启动Apache时会报“/etc/rc.d/init.d/httpd: line 79: 29939 Segmentation fault $HTTPD -k $ARGV”的错误
#LoadModule php5_module modules/libphp5.so
LoadModule php7_module modules/libphp7.so
6.4、 重新Apache
systemctl stop httpd
systemctl start httpd
