This » PECL extension is not bundled with PHP.

Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: »

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User Contributed Notes 6 notes

3 years ago
Note, for Ubuntu, simply installing php5-mcrypt did not get mcrypt to work. You need to execute the following commands as root to enable it:

apt-get install php5-mcrypt
mv -i /etc/php5/conf.d/mcrypt.ini /etc/php5/mods-available/
php5enmod mcrypt
service apache2 restart
3 years ago
If you don't have a /etc/php5/conf.d directory, you can simply only do: php5enmod mcrypt

Should be working fine.
Tanner Williamson
3 years ago
On Ubuntu 14.04 LTS using php5-fpm with Nginx, I had to symlink the mcrypt.ini to the correct location, and then restart php5-fpm and nginx.
#ln -s /etc/php5/mods-available/mcrypt.ini /etc/php5/fpm/conf.d/mcrypt.ini
#service php5-fpm restart
#service nginx restart
biz at svstartuplab dot com
3 years ago
I needed to install mcrypt on Mac OS X Mavericks 10.9 for installing the Laravel 5 framework. I entered in the Terminal command line:

brew tap josegonzalez/homebrew-php
brew install php54 php54-mcrypt

This installed Mcrypt.  In Terminal type php -i to see a list of everything installed or for much better formatting and easier to read make a phpinfo.php page with this inside <?php phpinfo(); ?> 

More help with installing on OS X:
james dot mclean at gmail dot com
8 years ago
You can install Mcrypt from the PHP Source Tree as a module if you choose.

You first need to ensure you have libmcrypt, libmcrypt-devel, and mcrypt installed, then do:

# cd php-5.x.x/ext/mcrypt
# phpize
# aclocal
# ./configure
# make && make install

Enable the module by adding: '' to PHP.ini.


Very handy if you need to install a single module and you may have installed PHP via RPM, but don't wish to recompile your whole PHP install.
trenton at rainleader dot com
7 years ago
If using a Debian-based Linux system, you can run the following commands:

sudo apt-get install php5-mcrypt
sudo /etc/init.d/apache2 restart
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