Ubuntu 13.10 PHP 5.5.x mcrypt missing–fatal error:undefined function mcrypt_encrypt ()!

[Original]http://www.tuicool.com/articles/goto?id=mym7ver

I had updgraded my Ubuntu from 13.04 to 13.10 last week and everything went quite good. The only problems that I faced as developer is:

1. Apache 2.4 is not working with default previous installation and configuration and I had to remove it (complete Ly Uninstall/purge and Autoremove) and install it again.
2. all the virtual host setting do not work. I do not go for opting to change the Include setting in apache2.conf instead I rewrote all the settings myself.
3. another annoying and very strange problem was, PHP and its libraries. First I had problems with installing Apache module, this connects to PHP. Secondly I had problems of missing MCrypt library which is required for couple of projects on my system. Particularly a project developed in Zend 1.11 and phpMyAdmin do not work. I had the following error where I had written some methods for AES encryption with PHP ' s MCrypt library.

Mcrypt_encrypt()

I thought the MCrypt Library was missing in my PHP installation and I simply tried to install it via command line as Follo Ws:

$ su doapt-get install php5-mcrypt 

And I got the following:

Package lists ... Donebuilding Dependency Tree State       information ... Donephp5-mcrypt is already the newest version. Not upgraded. 

Weird. If It is a already there why isn ' t it working with my projects? Then I Googled to sometime and could not find exact solution anywhere. I tried to look the INI in/etc/php5/conf.d/and there is mcrypt.ini file with quite proper content in it:

Moduleextension=mcrypt.    So

Again I pulled my hair out and went out for the tea. Then I came and tried to look in the other folders Inside/etc/php5 folder and saw there mods-available which had again so Me INI files in it missing Mcrypt.ini. Then I just tried moving that Mcrypt.ini file From/etc/php5/conf.d/to/etc/php5/mods-available/then restarting the APAC He server.

$MV/etc/php5/conf.d/mcrypt.ini/etc/php5/mods-available/$ sudo service apache2 restart

Then I tried phpmyadmin from the browser, amazingly it worked now!

Hope this would help others who is facing the same issue.

Ubuntu 13.10 PHP 5.5.x mcrypt missing–fatal error:undefined function mcrypt_encrypt ()!