I'm new to Docker. I saw a few similar topics on stackoverflow, but non of the solution posted there helped me.
I have a Dockerfile:
FROM php:8.1.10-apache
RUN apt-get update
RUN docker-php-ext-install mysqli pdo pdo_mysql
COPY php.ini /usr/local/etc/php
RUN service apache2 restart
and a docker-compose.yml file:
version: '3'
services:
php:
build:
context: .
dockerfile: Dockerfile
ports:
- "80:80"
volumes:
- C:\apps\doc\src:/var/www/html
- C:\apps\doc\php.ini:/usr/local/etc/php/php.ini
db:
image: mysql:5.7
# NOTE: use of "mysql_native_password" is not recommended: https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password
# (this is just an example, not intended to be a production configuration)
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: example
adminer:
image: adminer
restart: always
ports:
- "8080:8080"
As you can see, pdo_mysql should be installed by Docker, but it't not. Functionextension_loaded('pdo_mysql')
in php returns false. The extension is enabled in php.ini:
extension=pdo_mysql
The php.ini file is working correctly (I changed some other value like max_execution_time for example, and it's updated in phpinfo(), so php.ini seems to work).
It looks like this extension is not "not enabled" but not installed at all.php -m
command gives me result like this:
PHP Warning: PHP Startup: Unable to load dynamic library 'pdo_mysql' (tried: /usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql (/usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql: cannot open shared
object file: No such file or directory), /usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql.so (/usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql.so: cannot open shared object file: No such file or
directory)) in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'pdo_mysql' (tried: /usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql (/usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql: cannot open shared obje
ct file: No such file or directory), /usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql.so (/usr/local/lib/php/extensions/no-debug-non-zts-20210902/pdo_mysql.so: cannot open shared object file: No such file or direc
tory)) in Unknown on line 0
[PHP Modules]
Core
ctype
curl
date
dom
fileinfo
filter
ftp
hash
iconv
json
libxml
mbstring
mysqli
mysqlnd
openssl
pcre
PDO
pdo_sqlite
Phar
posix
readline
Reflection
session
SimpleXML
sodium
SPL
sqlite3
standard
tokenizer
xml
xmlreader
xmlwriter
zlib
[Zend Modules]
UPDATE:
When I manually rundocker-php-ext-install pdo_mysql
inside container and then rundocker-compose restart
it works. But why isn't it installed by Docker automatically?
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DBMS is a database management system. It is designed to change, search, add and delete information in the database. There are many DBMSs designed for similar purposes with different features. One of the most popular is MySQL.
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