php5.3降级为5.2

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　　dpkg --purge php5
    dpkg --purge php5-common
  
    php -v
    php-cgi -v
   sudo aptitude install php5-cgi
  vim /etc/apt/sources.list修改为163的5.2的源
　　deb http://mirrors.163.com/ubuntu/ hardy main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ hardy-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ hardy-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ hardy main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ hardy-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ hardy-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ hardy-backports main restricted universe
　　
#deb http://security.ubuntu.com/ubuntu lucid-security main restricted
#deb-src http://security.ubuntu.com/ubuntu lucid-security main restricted
#deb http://security.ubuntu.com/ubuntu lucid-security universe
#deb-src http://security.ubuntu.com/ubuntu lucid-security universe
#deb http://security.ubuntu.com/ubuntu lucid-security multiverse
#deb-src http://security.ubuntu.com/ubuntu lucid-security multiverse
　　
#deb http://mirrors.163.com/ubuntu/ lucid main universe
　　
    sudo apt-get clean
    sudo apt-get update
   
    sudo apt-get install php5
sudo apt-get install php5-common
    php -v
    dpkg -l | grep php
   
   
    cd /var/www
    ls -la
    php index.php
    php -v
    sudo apt-get install php5-cgi
   php-cgi -v
  sudo /etc/init.d/nginx restart
    sudo /etc/init.d/php-fastcgi restart
　　php-fastcgi脚本请参照上一篇文章