How to install and enable PHP 5.5 extensions

Question

我正在设置Flarum论坛软件，我想立即安装mbstring，pdo_mysql，openssl，json，gd，dom，fileinfo，如说明所示，我需要这些。

Answer 1

These are called modules / extensions and can be enabled in the php.ini

Possible duplicate of Fatal error: Call to undefined function openssl_random_pseudo_bytes()