MySQLi not found dockerized php

Question

I\'m trying to dockerize my website. I\'ve got Nginx and PHP up and running and it\'s working find except I can\'t connect to a db. When the page is loaded I get the error:<

Answer 1

It looks like you don't have the MysqlI extension enabled in your php.ini. If enabled, you should see a section mysqli in your phpinfo.

More info on enabling the extension can be found here: Fatal error: Class 'MySQLi' not found

Answer 2

works for me:

inside php container:

docker-php-ext-install mysqli

apachectl restart

• docker images: mysql, php:7.2.30-apache

https://github.com/docker-library/php/issues/391

Answer 3

i had similar issue with
php:7-apache image, which by default will not have mysqli installed
you can verify this inside the container

$ docker exec -it <phpcontainerid> bash  

inside the docker container bash terminal

# docker-php-ext-enable mysqli

if mysqli is not installed which you will come to know from the output of above command

# docker-php-ext-install mysqli

then i commited this change so the same image

$ docker commit -p <phpcontainerid> <new or same image name>

Answer 4

You need to enable the php extension in your Dockerfile:

FROM php:7
RUN docker-php-ext-install mysqli

There is no need to touch php.ini.