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Installing MCrypt and cURL on Ubuntu Server

Installing packages for PHP under Ubuntu Server

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Installing MCrypt and cURL on Ubuntu Server

For some unknown reason, the default installation of PHP on Ubuntu Server does not install two popular (and often required) extensions - MCrypt and cURL. This guide shows you how to install and configure these two extensions.

Installing MCrypt

The MCrypt extension is used by phpMyAdmin, Magento and many other PHP applications for encrypting data (passwords, hashing and so on). Strangely the default installation of PHP5 on Ubuntu Server (at the time of writing) does not include this extension.

Installing MCrypt for PHP5 on your Ubuntu Linux system is as easy as entering the following command in the console:

sudo apt-get install php5-mcrypt

Then you will need to restart Apache to load the MCrypt extension. You can do this with the command:

sudo /etc/init.d/apache2 restart

Installing cURL

cURL is a PHP extension which allows you to connect to, and communicate with, different servers using an array of different protocols such as HTTP, HTTPS, FTP, telnet and file. By default, this is not included in a standard installation of PHP on Ubuntu Server. You can easily install cURL using the following command:

sudo apt-get install php5-curl

Again, you will need to restart Apache. You can install MCrypt and cURL then restart Apache once.

sudo /etc/init.d/apache2 restart

You can verify that these have been installed correctly by looking at the output from PHPInfo. You can do this from the command line console

$ php -r "phpinfo();"

Or, more easily from a PHP document. Create a new file in the document root called phpinfo.php and place the following line inside it.

  1. <?php phpinfo(); ?>

Now access that file in your browser and you will see detailed information about the extensions loaded into PHP, including if installing MCrypt and cURL were successful.

Last updated: 2017-06-17

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