PHP | "The requested PHP extension bcmath is missing from your system."

php web configuration composer-php ini

You can use function get_loaded_extensions to see if bcmath modul is loaded. Or in terminal php -m or php -m | grep name_of_the_modul

You can install it depending on what OS you are using:

Ubuntu

sudo apt install php7.0-bcmath

CentOS

yum install bcmath

php web configuration composer-php ini

PHP 7.2

apt-get updateapt-get install php7.2-bcmath

work like a charm :)

php web configuration composer-php ini

For any version in php Centos use

This solution worked for me

yum install php-bcmath

PHP will take the default version installed in the machine, search for that package and install it.

Delete the file composer.lock file if that is already created and then run again,

composer install

If you run

composer update

it will update whatever default packages are installed in composer.json which might create problem for you.