Ryfujk

I use debian 6.0.6, before I install phpmyadmin, I install this:

apt-get update && apt-get -y install apache2 apache2-doc autoconf automake 

bison ca-certificates ethtool flex g++ gcc gcc-4.4 libapache2-modphp5 

libcrypt-ssleay-perl libmysqlclient-dev libnet1 libnet1-dev libpcre3 

libpcre3-dev libphp-adodb libssl-dev libtool libwww-perl make mysqlclient 

mysql-common mysql-server ntp php5-cli php5-gd php5-mysql php-pear 

sendmail sysstat vim

I try to install phpmyadmin, but I found this error:

apt-get install phpmyadmin

Reading package lists... Done

Building dependency tree

Reading state information... Done

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable

distribution that some required packages have not yet been created

or been moved out of Incoming.

The following information may help to resolve the situation:

The following packages have unmet dependencies:

 phpmyadmin : Depends: php5-mcrypt but it is not going to be installed

E: Broken packages

And I tried this command:

apt-get install phpmyadmin php5-mcrypt

Reading package lists... Done

Building dependency tree

Reading state information... Done

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable

distribution that some required packages have not yet been created

or been moved out of Incoming.

The following information may help to resolve the situation: 

The following packages have unmet dependencies:

php5-mcrypt : Depends: php5-common (= 5.3.3-7+squeeze17) but 5.3.28-1~dotdeb.0 is to be installed

E: Broken packages

What should I do?

Your 'php5-common' appears to be provided by "Dotdeb" which is a third party site that distributes packages. Either you were messing with your sources.list previously and reverted the change, or you didn't post the complete list here. Or, a possible third option, you may have manually downloaded the .deb file from Dotdeb and installed it manually.

As a result of the non-Squeeze package, your packaging system is broken. You're trying to install (from the Squeeze repository, according to your sources.list) a package (php5-mcrypt) that depends on the php5-common that is also from Squeeze (version 5.3.3-7+squeeze17), but what you actually have is the Dotdeb version (5.3.28-1~dotdeb.0). Since the versions don't match, php5-mcrypt won't install.

Unless you have a good reason to want packages from non-Debian sources -- and know how to deal with conflicts when the occur -- I recommend sticking only with the official sources. First, make sure your sources.list doesn't mention Dotdeb and update aptitude or apt-get to make sure they're working off the updated list in cache. Then, just to be safe, back up the associated configuration files, remove the Dotdeb files (at least php5-common and probably anything it depends on), and re-install them. If you don't purge the package, the configuration file should stay, but that's assuming the Dotdeb people use the same locations (which is relatively likely, but I don't know anything about them so I won't promise it).