Why Is Laravel's Migration Failing Due to a Missing Mcrypt Extension on OSX, and How Can I Fix It?

Laravel's Mcrypt PHP Extension Requirement

When using Laravel 4's migrate function on OSX, you may encounter an error indicating a missing Mcrypt PHP extension. Despite apparently being enabled, you're still encountering this issue.

To resolve this, first check if you have MAMP installed. If you do, proceed with the following:

• Determine the PHP version you're using by running which php in the terminal.
• If it's not the MAMP PHP version, navigate to the user's home directory by running cd ~ and create or edit the file .bash_profile.
• In .bash_profile, add the following line:

export PATH=/Applications/MAMP/bin/php/php5.4.10/bin:$PATH

Note: Replace "php5.4.10" with the actual MAMP PHP version by running cd /Applications/MAMP/bin/php in the terminal.

After saving the changes, restart the terminal. You should now be using the correct PHP version and the error should no longer appear.

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