php安装步骤：
1. 下载php-7.0.14.tar.gz，并将其解压：
$ tar -zvxf php-7.0.14.tar.gz
2. 安装相关依赖包：
$ apt-get install -y libxml2 libxml2-dev openssl libcurl4-gnutls-dev libjpeg-dev libpng12-dev libfreetype6-dev
3. 执行：ln -s /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib
注：否则会报错：configure: error: Cannot find OpenSSL's libraries
4. 编译：
$ cd php-7.0.14
$ ./configure --with-openssl --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-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-fpm \
--enable-fastcgi --without-gdbm --disable-fileinfo
5. 安装：
$ make && make install
成功：
php-fpm配置
$ cd php-7.0.14
$ cp php.ini-production /usr/local/etc/php.ini
在php.ini中添加一行：cgi.fix_pathinfo=0$ cp /usr/local/etc/php-fpm.conf.default /usr/local/etc/php-fpm.conf
$ cp /usr/local/etc/php-fpm.d/www.conf.default /usr/local/etc/php-fpm.d/www.conf$ vi /usr/local/etc/php-fpm.d/www.conf
将group = nobody修改为 group = ,即将nobody删除。否则在后面执行service php-fpm start时会报错，即Starting php-fpm [10-Feb-2017 06:32:10] ERROR: [pool www] cannot get gid for group 'nobody'
（可直接执行：sed -i "s/group = nobody/group = /g" /usr/local/etc/php-fpm.d/www.conf）$ vi /usr/local/etc/php-fpm.conf
将php-fpm.conf最后一行的include=NONE/etc/php-fpm.d/.conf修改为include=etc/php-fpm.d/.conf
（注：此时可以使用命令进行测试：
$ /usr/local/sbin/php-fpm -t
输出：NOTICE: configuration file /usr/local/etc/php-fpm.conf test is successful 即配置正确）$ cp /root/php-7.0.14/sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
$ chmod 755 /etc/init.d/php-fpm
$ service php-fpm start
输出：Starting php-fpm done
测试是否能解析php文件：
注：先要安装nginx，具体步聚见http://www.jianshu.com/p/6b70db035b95
- 在/usr/local/nginx/html/文件夹下创建一个用于测试的php文件，如test.php:
<?php
phpinfo()
?>
- 启动nginx（需要对脚本做修改），在浏览器中输入
http://localhost/test.php，看到以下页面即成功。
遇到的问题及解决方法
- .编译时报错：configure: error: Cannot find OpenSSL's libraries
解决方法：
apt-get install openssl
apt-get install libssl
find / -name libssl.so
输出：/usr/lib/x86_64-linux-gnu/libssl.so
执行：ln -s /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib - 编译时报错：configure: error: Please reinstall the libcurl distribution -
easy.h should be in <curl-dir>/include/curl/
解决方法：apt-get install libcurl4-gnutls-dev - 编译时报错：configure: error: jpeglib.h not found.
解决方法：apt-get install libjpeg-dev - 编译时报错：configure: error: png.h not found.
解决方法：apt-get install libpng12-dev - 编译报错：configure: error: freetype-config not found.
解决方法：apt-get install libfreetype6-dev - 执行/web/php/etc/php-fpm -t报错 ：
root@ng1:~/php-7.0.14# /web/php/sbin/php-fpm -t
[10-Feb-2017 10:29:10] WARNING: Nothing matches the include pattern '/web/php/etc/php-fpm.d/*.conf' from /web/php/etc/php-fpm.conf at line 125.
[10-Feb-2017 10:29:10] ERROR: No pool defined. at least one pool section must be specified in config file
[10-Feb-2017 10:29:10] ERROR: failed to post process the configuration
[10-Feb-2017 10:29:10] ERROR: FPM initialization failed
解决方法：cd /web/php/etc/php-fpm.d
cp www.conf.default www.conf
