2017-12-20-install-mcrypt-extension-in-php7-2-php-7-3

[arzzen]

https://lukasmestan.com/install-mcrypt-extension-in-php7-2/

[nishanth6]

Issue Solved when installing php7.2-mcrypt

I was also facing the same issue. Check this link https://stackoverflow.com/q/48275494/7713811 to get the right solution for installing it in PHP

[theonlydoo]

what about: https://secure.php.net/manual/en/migration71.deprecated.php ?

[toens]

Thanks so much! Your information is precise, works well and saved me a lot of time! Thanks again!

[anjanesh]

This is just beautiful. Thanks. The only I had was that it was showing "ERROR: 'phpize' failed"
But I got that resolved by apt-get install php7.2-dev

[RMSHT]

This is just beautiful. Thanks. The only I had was that it was showing "ERROR: 'phpize' failed"
But I got that resolved by apt-get install php7.2-dev

Hi comrade
I had like error too and I resolved by 'sudo apt-get install php-dev' command

[anjanesh]

What is the solution for installing on a PHP 7.1 setup on MacOS ?

sudo pecl install mcrypt-1.0.2
WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update
pecl/mcrypt requires PHP (version >= 7.2.0, version <= 7.4.0, excluded versions: 7.4.0), installed version is 7.1.23
No valid packages found
install failed

[terrafrost]

Another possibility would be to install https://github.com/phpseclib/mcrypt_compat

[anjanesh]

Will mcrypt_compat work without changes in the API calling code ?

[terrafrost]

Will mcrypt_compat work without changes in the API calling code ?

It will indeed.

[anjanesh]

What will happen if the function already exists in PHP 7.0 and install mcrypt_compat ? Will it throw an error ?

[terrafrost]

What will happen if the function already exists in PHP 7.0 and install mcrypt_compat ? Will it throw an error ?

It'll work without issue. Under the hood, phpseclib will utilize OpenSSL, if it's available, then mcrypt, then it's own pure-PHP implementation.

mcrypt_compat, in turn, defines functions like phpseclib_mcrypt_list_algorithms and then does this to define mcrypt_list_algorithms:

if (!function_exists('mcrypt_list_algorithms')) {
    function mcrypt_list_algorithms($lib_dir = '')
    {
        return phpseclib_mcrypt_list_algorithms($lib_dir);
    }
}

This approach is pretty common in the world of shims (eg. password_compat, random_compat, sodium_compat, etc)

[anjanesh]

Thank you very much for this shim library on composer. I just tested this out on one my test sites and this worked properly.