安装PHP依赖包
yum install -y autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libpng libpng-devel libxml2 libxml2-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel curl curl-devel gdbm-devel db4-devel libXpm-devel libX11-devel gd-devel gmp-devel readline-devel libxslt-devel expat-devel
安装Libmcrypt库
https://sourceforge.net/projects/mcrypt/files/Libmcrypt/2.5.8/libmcrypt-2.5.8.tar.gz
tar zxvf libmcrypt-2.5.8.tar.gz
cd libmcrypt-2.5.8
./configure && make && make && make install
export LD_LIBRARY_PATH=/usr/local/lib: LD_LIBRARY_PATH
安装mhash库
https://ncu.dl.sourceforge.net/project/mhash/mhash/0.9.9.9/mhash-0.9.9.9.tar.gz
./configure && make && make install
安装mcrypt库
https://ncu.dl.sourceforge.net/project/mcrypt/MCrypt/2.6.8/mcrypt-2.6.8.tar.gz
./configure && make && make install
安装php5.6
./configure --prefix=/usr/local/php \
--with-config-file-path=/usr/local/php/etc \
--with-mysql=mysqlnd \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--enable-fpm \
--enable-soap \
--with-libxml-dir \
--with-openssl \
--with-mcrypt \
--with-mhash \
--with-pcre-regex \
--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 \
--disable-mbregex \
--disable-mbregex-backtrack \
--with-libmbfl \
--with-onig \
--enable-pdo \
--with-pdo-mysql \
--with-zlib-dir \
--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
如果有下面这个错误
------------------------------------------------------------------------------------------
Please reinstall the libcurl distribution -easy.h should be in/include/curl/
解决方法
yum install curl curl-devel
重新configure
---------------------------------------------------------------------------------------
复制php.ini 到安装目录
cp php.ini-production /usr/local/php/etc/php.ini
在php.ini里找到date.timezone这行，把值改成PRC，如date.timezone = PRC。
如果没有这一行直接加上就好。最后重启WEB服务器与PHP即可。
把php-fpm添加到服务
cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf
vi /usr/local/php/etc/php-fpm.conf
把pid的选项打开，然后填入路径，我的路径是/usr/local/php/etc/php-fpm.pid
chmod a+x /usr/local/php/sbin/php-fpm 给权限
vi /usr/lib/systemd/system/php-fpm.service
[Unit]
Description=php-fpm
After=network.target
[Service]
Type=forking
ExecStart=/usr/local/php/sbin/php-fpm
ExecReload=kill -USR2 `cat /usr/local/php/etc/php-fpm.pid`
ExecStop=kill -INT `cat /usr/local/php/etc/php-fpm.pid`
PrivateTmp=true
[Install]
WantedBy=multi-user.target
如果出现错误
Warning: Unit file of nginx.service changed on disk,'systemctl daemon-reload' recommended
直接systemctl daemon-reload
设置开机启动
systemctl enable php-fpm.service 或者 systemctl enable php-fpm
停止开机启动
systemctl disable php-fpm.service
启动nginx服务
systemctl start php-fpm.service
查看服务当前状态
systemctl status php-fpm.service
重新启动服务
systemctl restart php-fpm.service
查看所有已启动的服务
systemctl list-units --type=service
查看进程
ps -ef | grep php-fpm
查看进程数量
ps | grep -c php-fpm
查看每个FPM的内存占用：
ps -ylC php-fpm --sort:rss
查看一下当前fastcgi进程个数
ss -napo |grep "php-fpm" | wc -l