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

Question

Greetings fellow developers,

I am trying to use composer for a PHP project of mine on a development server I recently booted up and for some reason I am unable to. I successfully installed composer, however, when I try to run the require command I get the following error:

root@webserver:/var/mypersonal/index# composer require php-amqplib/php-amqplib PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/php_openssl.dll' - /usr/lib/php/20151012/php_openssl.dll: cannot open shared object file: No such file or directory in Unknown on line 0 Do not run Composer as root/super user! See https://getcomposer.org/root for details Using version ^2.6 for php-amqplib/php-amqplib ./composer.json has been created Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages.    Problem 1     - php-amqplib/php-amqplib v2.6.3 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.     - php-amqplib/php-amqplib v2.6.2 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.     - php-amqplib/php-amqplib v2.6.1 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.     - php-amqplib/php-amqplib v2.6.0 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.     - Installation request for php-amqplib/php-amqplib ^2.6 -> satisfiable by php-amqplib/php-amqplib[v2.6.0, v2.6.1, v2.6.2, v2.6.3].    To enable extensions, verify that they are enabled in your .ini files:     - /etc/php/7.0/cli/php.ini     - /etc/php/7.0/cli/conf.d/10-mysqlnd.ini     - /etc/php/7.0/cli/conf.d/10-opcache.ini     - /etc/php/7.0/cli/conf.d/10-pdo.ini     - /etc/php/7.0/cli/conf.d/20-calendar.ini     - /etc/php/7.0/cli/conf.d/20-ctype.ini     - /etc/php/7.0/cli/conf.d/20-exif.ini     - /etc/php/7.0/cli/conf.d/20-fileinfo.ini     - /etc/php/7.0/cli/conf.d/20-ftp.ini     - /etc/php/7.0/cli/conf.d/20-gettext.ini     - /etc/php/7.0/cli/conf.d/20-iconv.ini     - /etc/php/7.0/cli/conf.d/20-json.ini     - /etc/php/7.0/cli/conf.d/20-mysqli.ini     - /etc/php/7.0/cli/conf.d/20-pdo_mysql.ini     - /etc/php/7.0/cli/conf.d/20-phar.ini     - /etc/php/7.0/cli/conf.d/20-posix.ini     - /etc/php/7.0/cli/conf.d/20-readline.ini     - /etc/php/7.0/cli/conf.d/20-shmop.ini     - /etc/php/7.0/cli/conf.d/20-sockets.ini     - /etc/php/7.0/cli/conf.d/20-sysvmsg.ini     - /etc/php/7.0/cli/conf.d/20-sysvsem.ini     - /etc/php/7.0/cli/conf.d/20-sysvshm.ini     - /etc/php/7.0/cli/conf.d/20-tokenizer.ini   You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.  Installation failed, deleting ./composer.json. 

I'm assuming it's something to do with the PHP warning I recieve right when running the composer require command but no google search results lead me to the correct direction.

Additionally, I have provided my /etc/php/7.0/cli/php.ini file incase of an error in that file.

https://gist.github.com/anonymous/bc5bac59d684cbf575cef931ef36daf6 (I couldn't include the file in this post due to the character limit on posts.)

Thank you.

Answer 1

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

Answer 2

PHP 7.2

Debian - jessie

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

work like a charm :)