CentOS编译安装php7.2
介绍：
久闻php7的速度以及性能那可是比php5系列的任何一版本都要快，具体性能有多好，建议还是先尝试下再说。如果你是升级或新安装，那你首先需要考虑php7和程序是否存在兼容性，如果程序是基于php5开发的，那么就需要考虑php7是否适合你当前的生产环境，今天我就实操并安装用于生产中。
先安装php依赖包，否则在编译安装php7的过程当中会出现各种报错，安装完成后即可进入下一个环节。
安装扩展包并更新系统内核：
yum install epel-release -y
yum update安装php依赖组件（包含Nginx依赖）：
yum -y install wget vim pcre pcre-devel openssl openssl-devel libicu-devel gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel ncurses ncurses-devel curl curl-devel krb5-devel libidn libidn-devel openldap openldap-devel nss_ldap jemalloc-devel cmake boost-devel bison automake libevent libevent-devel gd gd-devel libtool* libmcrypt libmcrypt-devel mcrypt mhash libxslt libxslt-devel readline readline-devel gmp gmp-devel libcurl libcurl-devel openjpeg-devel创建用户和组，并下载php安装包解压：
cd /tmp
groupadd www
useradd -g www www
wget http://am1.php.net/distributions/php-7.2.1.tar.gz
tar xvf php-7.2.1.tar.gz
cd php-7.2.1设置变量并开始源码编译：
cp -frp /usr/lib64/libldap* /usr/lib/./configure --prefix=/usr/local/php72 \
--with-config-file-path=/usr/local/php72/etc \
--enable-fpm \
--with-fpm-user=www \
--with-fpm-group=www \
--enable-mysqlnd \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--enable-mysqlnd-compression-support \
--with-iconv-dir \
--with-freetype-dir \
--with-jpeg-dir \
--with-png-dir \
--with-zlib \
--with-libxml-dir \
--enable-xml \
--disable-rpath \
--enable-bcmath \
--enable-shmop \
--enable-sysvsem \
--enable-inline-optimization \
--with-curl \
--enable-mbregex \
--enable-mbstring \
--enable-intl \
--with-libmbfl \
--enable-ftp \
--with-gd \
--with-openssl \
--with-mhash \
--enable-pcntl \
--enable-sockets \
--with-xmlrpc \
--enable-zip \
--enable-soap \
--with-gettext \
--disable-fileinfo \
--enable-opcache \
--with-pear \
--enable-maintainer-zts \
--with-ldap=shared \
--without-gdbm \
--with-apxs2=/usr/bin/apxs开始安装：
make && make install完成安装后配置php.ini文件：
cp php.ini-development /usr/local/php72/etc/php.ini
cp /usr/local/php72/etc/php-fpm.conf.default /usr/local/php72/etc/php-fpm.conf
cp /usr/local/php72/etc/php-fpm.d/www.conf.default /usr/local/php72/etc/php-fpm.d/www.conf修改 php.ini 相关参数：
vim /usr/local/php/etc/php.iniexpose_php = Off
short_open_tag = ON
max_execution_time = 300
max_input_time = 300
memory_limit = 128M
post_max_size = 32M
date.timezone = Asia/Shanghai
mbstring.func_overload=2
extension = "/usr/local/php/lib/php/extensions/no-debug-zts-20170718/ldap.so"
#OPcache 缓存
[opcache]
zend_extension=/usr/local/php/lib/php/extensions/no-debug-zts-20170718/opcache.so
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=60
opcache.fast_shutdown=1
opcache.enable_cli=1
#设置php安全函数
;disable_functions = passthru,exec,system,chroot,chgrp,chown,shell_exec,proc_open,proc_get_status,popen,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru
disable_functions = eval,assert,popen,passthru,escapeshellarg,escapeshellcmd,passthru,exec,system,chroot,chgrp,chown,escapeshellcmd,escapeshellarg,shell_exec,proc_get_status,ini_alter,ini_restore,dl,pfsockopen,openlog,syslog,readlink,symlink,leak,popepassthru,stream_socket_server,popen,proc_open,proc_close,phpinfo
#配置www.conf
listen = /var/run/www/php-cgi.sock
listen.owner = www
listen.group = www
listen.mode = 0660
listen.allowed_clients = 127.0.0.1
pm = dynamic
listen.backlog = -1
pm.max_children = 180
pm.start_servers = 50
pm.min_spare_servers = 50
pm.max_spare_servers = 180
request_terminate_timeout = 120
request_slowlog_timeout = 50
slowlog = var/log/slow.log创建php-cgi.sock存放目录
mkdir /var/run/www/
chown -R www:www /var/run/www配置php-fpm.conf
vim /usr/local/php/etc/php-fpm.conf取下以下注释并填写完整路径：
pid = /usr/local/php/var/run/php-fpm.pid至此php7已经安装完成。
说明：禁用php函数，如果程序需要这些函数，可以取消禁止，新手建议忽略此步骤。
创建system系统单元文件php-fpm启动脚本：
vim /usr/lib/systemd/system/php-fpm.service添加如下变量内容：
[Unit]
Description=The PHP FastCGI Process Manager
After=syslog.target network.target
[Service]
Type=simple
PIDFile=/usr/local/php/var/run/php-fpm.pid
ExecStart=/usr/local/php/sbin/php-fpm --nodaemonize --fpm-config /usr/local/php/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID
[Install]
WantedBy=multi-user.target启动php-fpm服务并加入开机自启动：
systemctl enable php-fpm.service
systemctl restart php-fpm.service