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laravel – PHP mcrypt not compiled properly

Posted by: admin July 12, 2020 Leave a comment


I have tried everything but I not able to fix this error. I installed PHP by downloading it and then ran:

brew install php55-mcrypt

I had initially installed it with PHP 5.3 then Laravel complained that it has to be greater than 5.4. So everything got messed up.

I am on MAC 10.7. Can someone help me?

php -v

PHP Warning:  PHP Startup: mcrypt: Unable to initialize module
Module compiled with module API=20090626
PHP    compiled with module API=20121212
These options need to match
 in Unknown on line 0
PHP 5.5.1 (cli) (built: Aug 14 2013 10:31:02) 
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies
How to&Answers:

brew reinstall mcrypt --build-from-source php56-mcrypt --build-from-source

Build from source is an option which will force brew to compile from source rather than using a bottle.


Since you had a previous installation of PHP (5.3), and now you just installed a newer version (5.5.1), maybe the new PHP installation are pointing to some old locations.

Look for any php.ini you’re using, and verify the extension_dir directive.

The last suggestion would be to reinstall PHP 5.5.1.


The warning is because of mismatch between php-mcrypt module version and php version in the server. I am not that familiar with brew as I am a Macports user however depending on your unix ditro you can do something like:


yum list installed | grep php55


Sample output:
php55-gd.x86_64                        5.2.14-2.el5.art                   installed
php55-imap.x86_64                      5.2.14-2.el5.art                  installed
php55-mbstring.x86_64                  5.2.14-2.el5.art                installed
**php55-mcrypt.x86_64                    5.1.6-15.el5.centos.1        installed**
php55-mysql.x86_64                     5.2.14-2.el5.art                  installed

We can see the php-mcrypt module associated with earlier version of PHP.

How to fix the error?

Update php-mcrypt module to fix the error.


yum update php-mcrypt


hope that helps