How to install PDO driver for MySQL in a PHP Docker image?

Installing PDO Driver in PHP Docker Image

You're encountering an error while attempting to access your database from within your PHP container because the PDO driver for MySQL is missing. To resolve this issue, follow these steps:

Use the docker-php-ext-install Script

Instead of manually installing the PHP extension, utilize the official docker-php-ext-install script from the PHP docker repository. This script streamlines the installation process.

Create a Docker image as follows:

FROM php:5.6-apache

# PHP extensions
RUN docker-php-ext-install pdo pdo_mysql

This command will install both the PDO and pdo_mysql extensions in your Docker image.

Confirm Extension Installation

After executing the above command, verify that the extension is installed successfully by running:

php -i | grep PDO

You should see output indicating that PDO support is enabled and the pdo_mysql driver is also enabled.

Restart Container

After installing the extension, restart your container for the changes to take effect.

Additional Notes

Your previous attempts to install the extension manually were ineffective because the apt-get method installs the extension for the host machine, not the container. The docker-php-ext-install script, on the other hand, specifically installs extensions within the container environment.

In conclusion, by utilizing the docker-php-ext-install script and restarting the container, you will successfully install the PDO driver for MySQL in your PHP Docker image, resolving the connection issue.

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