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Question

mcrypt path error for php7.2 cli and nginx

Posted June 5, 2020 2.9k views
NginxPHP

I have updated cli and nginx to use php 7.2 using the follow commands:

sudo apt-get -y install gcc make autoconf libc-dev pkg-config
sudo apt-get -y install libmcrypt-dev
sudo pecl install mcrypt-1.0.1

sudo bash -c "echo extension=/usr/lib/php/20170718/mcrypt.so > /etc/php/7.2/cli/conf.d/mcrypt.ini"
sudo bash -c "echo extension=/usr/lib/php/20190902/mcrypt > /etc/php/7.2/mods-available/mcrypt.ini"

However when I run:

php -i | grep "mcrypt"

I get the following response:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20190902/mcrypt' (tried: /usr/lib/php/20190902/mcrypt (/usr/lib/php/20190902/mcrypt: cannot open shared object file: No such file or directory), /usr/lib/php/20170718//usr/lib/php/20190902/mcrypt.so (/usr/lib/php/20170718//usr/lib/php/20190902/mcrypt.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
/etc/php/7.2/cli/conf.d/mcrypt.ini

phpinfo() doesn’t display mcrypt info either, I’m guessing for the same reason.

I’ve tried changing the path in /etc/php/7.2/cli/php.ini; ‘extension_dir’ is actually commented out, but if I uncomment it, whatever I update it to, it gets appended to ’/usr/lib/php/20170718/’.

Why does my system insist on using ’/usr/lib/php/20170718/’ as the path?

How do I get mcrypt working for cli and nginx?

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ecell100
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ecell100

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2 answers
alexdo June 5, 2020

Hello, @ecell100

As you can see from the warning message, the problem is with the actual path of the library:

(/usr/lib/php/20190902/mcrypt: cannot open shared object file: No such file or directory), /usr/lib/php/20170718//usr/lib/php/20190902/mcrypt.so (/usr/lib/php/20170718//usr/lib/php/20190902/mcrypt.so: cannot open shared object file: No such file or directory)) in Unknown on line

You can either try running these two commands:

sudo bash -c "echo extension=/usr/lib/php/20190902/mcrypt.so > /etc/php/7.2/cli/conf.d/mcrypt.ini"
sudo bash -c "echo extension=/usr/lib/php/20190902/mcrypt.so > /etc/php/7.2/apache2/conf.d/mcrypt.ini"

or change the path manually by editing the ini files directly. You can then again test if everything is loaded correctly:

php -i | grep "mcrypt"

Keep in mind that you need to restart Nginx as well in order to make sure the new library is loaded.

Let me know how it goes.

Regards,
Alex

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  • ecell100 June 5, 2020

    Apologies I should have double checked what I posted, I have already run the two sudo bash echo commands exactly as you have put them.

    I get the ‘Unable to load dynamic library’ for all libraries including mcrypt.

    Reply Report
    • alexdo June 6, 2020

      Hello, @ecell100

      Thanks for confirming this.

      Can you provide me with the output of the following command:

      php -m | grep mcrypt

      Regards,
      Alex

      Reply Report
      • ecell100 June 9, 2020

        Thanks for replying, I rolled the server back to php7.0 to get this working

        Reply Report
        • alexdo June 9, 2020

          Hello, @ecell100

          I’m glad that you’ve sorted this. What you can do is to spin up another droplet (dev environment) when you want to upgrade to PHP 7.2 and test if everything is working on the new droplet. Once you’re happy with the result you can replicate the changes on your live droplet.

          Regards,
          Alex

          Reply Report
kabin November 6, 2020

HEY I FOUND A SOLUTION
firstly Goto
/etc/php/7.2/cli/conf.d and
/etc/php/7.2/cgi/conf.d and
/etc/php/7.2/mods-available and
/etc/php/7.2/apache2/conf.d
and remove mcrypt.ini from all those folder.And back up mcrypt.ini if u need

this is beacause php 7.2 dosent depend on it

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