Laravel 4 - Error while running `composer install`

Question

The problem:

I have installed Composer and followed the Quick start guide in the Laravel 4 documentation.

I get the following error when I run composer

Answer 1

You might have Mcrypt installed already on your computer, if you are using MAMP or any other application. So, you don't need to install Mcrypt again. Add the following code to a php file and place it in your htdocs directory. See the info about the PHP you are running. You can see whether Mcrypt is already installed or not.

If it shows Mcript, then do the following:

• Check which PHP version you are using. You can see different directories for different PHP versions in this directory: /Applications/MAMP/bin/php/.
• Move to the user's home directory. Use this command on terminal: cd ~.
• Edit (or create a new one if not exists) .bash_profile file.
• Add the following line:

where php5.5.10 is the directory of the PHP version you are using.

export PATH=/Applications/MAMP/bin/php/php5.5.10/bin:$PATH

Now restart your computer. And you can use php artisan command of Laravel.

Source of information: Laravel requires the Mcrypt PHP extension