我最近升级到PHP 5.4，但它不适合我，所以我想我会删除PHP 5.4并重新安装PHP 5.3。
我卸载了php5.4，从sources.list文件中删除了dotdeb源文件，运行apt-get update ，重新安装了php5，但是它仍然从dotdeb安装了php 5.4，而不是使用原始的debian版本库。
这就是dpkg -l | grep php dpkg -l | grep php返回
# dpkg -l | grep php ii libapache2-mod-php5 5.4.4-15 server-side , HTML-embedded scripting language (Apache 2 module) rc libapache2-mod-php5filter 5.4.16-1~dotdeb.0 server-side , HTML-embedded scripting language (apache 2 filter module) rc libapache2-mod-suphp 0.7.1-1 Apache2 mod ule to run php scripts with the owner permissions rc php-pear 5.3.3-7+squeeze15 PEAR - PHP Extension and Application Repository ii php5 5.4.4-15 server-side , HTML-embedded scripting language (metapackage) rc php5-cgi 5.4.16-1~dotdeb.0 server-side , HTML-embedded scripting language (CGI binary) ii php5-cli 5.4.4-15 command-lin e interpreter for the php5 scripting language ii php5-common 5.4.4-15 Common file s for packages built from the php5 source rc php5-curl 5.4.16-1~dotdeb.0 CURL module for php5 rc php5-gd 5.4.16-1~dotdeb.0 GD module f or php5 rc php5-imagick 5.4.16-1~dotdeb.0 imagick mod ule for php5 rc php5-imap 5.4.16-1~dotdeb.0 IMAP module for php5 rc php5-intl 5.4.16-1~dotdeb.0 internation alisation module for php5 rc php5-mcrypt 5.4.16-1~dotdeb.0 MCrypt modu le for php5 rc php5-mysql 5.4.16-1~dotdeb.0 MySQL modul e for php5 rc php5-mysqlnd 5.4.16-1~dotdeb.0 MySQL modul e for php5 (Native Driver) rc php5-pgsql 5.4.16-1~dotdeb.0 PostgreSQL module for php5 rc php5-pspell 5.4.16-1~dotdeb.0 pspell modu le for php5 rc phpmyadmin 4:3.4.11.1-2 MySQL web a dministration tool rc suphp-common 0.7.1-1 Common file s for mod suphp
“rc”表示configuration文件存在。 键入apt-get remove php5 --purge完全摆脱它，然后从官方安装。