# Linux下部署php多版本共存
[TOC]

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## 背景说明

自php7问世，身为最新版本控的我马上升级体验，但是由于服务器上还有旧程序在运行，只好部署一个php多版本共存环境。

现有环境是lnmp
 - CentOS 6.7
 - nginx 1.10.1
 - mariadb-10.0.26
 - php 7.0.8
 
 为了更好兼容旧的php程序，推荐使用5.4.45. 主要是兼容mysql扩展。

## 开始安装
首先要[下载](http://download.csdn.net/detail/gxdlove/9563124)php-5.4.45.tar.gz源码包。

通过源码安装
``` shell
# tar xzvf php-5.4.45.tar.gz
# cd php-5.4.45

# ./configure --prefix=/usr/local/php54 --with-config-file-path=/usr/local/php54/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --with-mysql=mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir=/usr/local/freetype --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --with-mcrypt --enable-ftp --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --disable-fileinfo --enable-intl --with-xsl

# make ZEND_EXTRA_LIBS='-liconv'
# make install
# cp php.ini-production /usr/local/php/etc/php.ini
```
## php.ini 配置
``` text
post_max_size = 50M
upload_max_filesize = 50M
date.timezone = PRC
short_open_tag = On
cgi.fix_pathinfo=0
max_execution_time = 300
disable_functions=passthru,exec,system,chroot,scandir,chgrp,chown,shell_exec,proc_open,proc_get_status,popen,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,stream_socket_server
```

## php-fpm.conf 配置
```shell
# vim /usr/local/php/etc/php-fpm.conf
```
``` shell
[global]
pid = /usr/local/php54/var/run/php-fpm.pid
error_log = /usr/local/php54/var/log/php-fpm.log
log_level = notice

[www]
listen = /tmp/php54-cgi.sock
listen.backlog = -1
listen.allowed_clients = 127.0.0.1:9001
listen.owner = www
listen.group = www
listen.mode = 0666
user = www
group = www
pm = dynamic
pm.max_children = 40
pm.start_servers = 20
pm.min_spare_servers = 20
pm.max_spare_servers = 40
request_terminate_timeout = 100
request_slowlog_timeout = 0
slowlog = var/log/slow.log
```
> **注意**：重点是配置监听端口和进程

## 启动 php-fpm
``` shell
# cp sapi/fpm/init.d.php-fpm /etc/init.d/php54-fpm
# chmod +x /etc/init.d/php54-fpm
# /etc/init.d/php54-fpm start
```
## 修改nginx配置，对需要的服务配置使用php-5.4.45
``` shell
  location ~ [^/]\.php(/|$)
  {
      try_files $uri =404;
      fastcgi_pass  unix:/tmp/php54-cgi.sock;
      fastcgi_index index.php;
      include fastcgi.conf;
  }
```
## 配置php-5.4.45 的php54-fpm 开机自动启动
``` shell
# chkconfig --add php54-fpm
# chkconfig php54-fpm on
```
> chkconfig  功能说明：检查，设置系统的各种服务。
> 语法：chkconfig [--add][--del][--list][系统服务] 
>chkconfig [--level ][系统服务][on/off/reset]