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I am trying to update laravel using composer update on ubuntu 06.04 but everytime i run composer update this warning always comes up.
PHP Warning: PHP Startup: Unable to load dynamic library 'mcrypt.so' (tried: /usr/lib/php/20170718/mcrypt.so (/usr/lib/php/20170718/mcrypt.so: cannot open shared object file: No such file or directory), /usr/lib/php/20170718/mcrypt.so.so (/usr/lib/php/20170718/mcrypt.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Does anyone knows how to deal it?
I am using php7.2
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You can install Mcrypt from the PHP Source Tree as a module if you choose. Enable the module by adding: 'extension=mcrypt.so' to PHP. ini. Done!
The mcrypt extension has been abandonware for nearly a decade now, and was also fairly complex to use. It has therefore been deprecated in favour of OpenSSL, where it will be removed from the core and into PECL in PHP 7.2.
You can also achieve this same screen by viewing a php file that has: phpinfo(); somewhere in the code. In this screen, simply search for the string "mcrypt support". If installed, you will see a box that says "enabled".
The mcrypt extension is included in PHP 5.4 through PHP 7.1. It was removed from PHP 7.2 and moved to an unofficial PECL extension because the mcrypt library is no longer maintained. For PHP 7.2+, PHP instead uses libsodium as a cryptography library.
I faced similar issue when I installed Php7.2 on Ubuntu 18. Though I had installed mcrypt using PECL still I get the error mentioned in the question.
I did following to fix it
sudo apt-get install php-pear php7.2-dev
then uninstalled
pecl uninstall mcrypt
Now reinstall mcrypt
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
When you are shown the prompt
libmcrypt prefix? [autodetect] :
Press [Enter] to autodetect.
After success installing mcrypt using pecl, you should add mcrypt.so extension to php.ini.
The output will look like this:
...
Build process completed successfully
Installing '/usr/lib/php/20170718/mcrypt.so' ----> this is our path to mcrypt extension lib
install ok: channel://pecl.php.net/mcrypt-1.0.1
configuration option "php_ini" is not set to php.ini location
You should add "extension=mcrypt.so" to php.ini
Now restart Apache
sudo service apache2 restart
Grab installing path and add to cli and apache2 php.ini configuration.
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/20170718/mcrypt.so > /etc/php/7.2/apache2/conf.d/mcrypt.ini"
First, open up a terminal window and install the necessary dependencies with the commands:
sudo apt-get -y install gcc make autoconf libc-dev pkg-config
sudo apt-get -y install php7.2-dev
sudo apt-get -y install libmcrypt-dev
Once the dependencies have been installed, you can install mcrypt with the command:
sudo pecl install mcrypt-1.0.1
And there you go. Mcrypt is now installed. Go back to the process of installing whatever server software that depends upon this extension and you should be good to go.
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For (>= PHP 7.3) you can use the following command:
sudo pecl install mcrypt-1.0.2
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