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Docker on MacOS: Xdebug for Visual Studio Code
Note
Docker on MacOS requires you to create a host address alias on your loopback device.
Table of Contents
- local
Prerequisites
Ensure you know how to customize php.ini
values for the Devilbox and have a rough understanding about common Xdebug options.
* php_ini
* configure_php_xdebug_options
Important
Ensure you have created an howto_host_address_alias_on_mac
and 10.254.254.254
is aliased to your localhost.
Assumption
For the sake of this example, we will assume the following settings and file system paths:
Directory | Path |
---|---|
Devilbox git directory | /home/cytopia/repo/devilbox |
env_httpd_datadir |
./data/www |
Resulting local project path | /home/cytopia/repo/devilbox/data/www |
Selected PHP version | 5.6 |
Host address alias | 10.254.254.254 (see prerequisites) |
The Resulting local project path is the path where all projects are stored locally on your host operating system. No matter what this path is, the equivalent remote path (inside the Docker container) is always /shared/httpd
.
Important
Remember this, when it comes to path mapping in your IDE/editor configuration.
Configuration
Install vscode-php-debug for VSCode
Ensure you have vscode-php-debug
installed for Visual Studio Code.
Configure VSCode
You will need to configure the path mapping in launch.json
(VSCode configuration file):
{ "version": "0.2.0", "configurations": [ { "name": "Xdebug for Project mytest", "type": "php", "request": "launch", "port": 9000, "pathMappings": { "/shared/httpd/mytest/htdocs": "${workspaceFolder}/htdocs" } }, { "name": "Launch currently open script", "type": "php", "request": "launch", "program": "${file}", "cwd": "${fileDirname}", "port": 9000 } ] }
Important
Recall the path settings from the Assumption section and adjust if your configuration differs!
Important
The above example configures Xdebug for a single project mytest. Add more projects as you need.
Configure php.ini
Note
The following example show how to configure PHP Xdebug for PHP 5.6:
Create an xdebug.ini
file (must end by .ini
):
# Navigate to the Devilbox git directory host> cd path/to/devilbox # Navigate to PHP 5.6 ini configuration directory host> cd cfg/php-ini-5.6/ # Create and open debug.ini file host> vi xdebug.ini
Copy/paste all of the following lines into the above created xdebug.ini
file:
; Defaults xdebug.default_enable=1 xdebug.remote_enable=1 xdebug.remote_port=9000 ; The MacOS way xdebug.remote_connect_back=0 xdebug.remote_host=10.254.254.254 ; idekey value is specific to Visual Studio Code xdebug.idekey=VSCODE ; Optional: Set to true to always auto-start xdebug xdebug.remote_autostart=false
Important
Ensure you have created a howto_host_address_alias_on_mac
pointing to 10.254.254.254
as stated in the prerequisites section above!
Note
Host os and editor specific settings are highlighted in yellow and are worth googling to get a better understanding of the tools you use and to be more efficient at troubleshooting.
Restart the Devilbox
Restarting the Devilbox is important in order for it to read the new PHP settings. Note that the following example only starts up PHP, HTTPD and Bind.
# Navigate to the Devilbox git directory
host> cd path/to/devilbox
# Stop, remove stopped container and start
host> docker-compose stop
host> docker-compose rm
host> docker-compose up php httpd bind
start_the_devilbox_stop_and_restart
(Why do docker-compose rm
?)