Add "--exec=<php-code>" argument to "plugin" command

[Jean-Claude Vignoli]

It may be useful to use the argument
--exec=<php-code>
when executing
wp plugin whatever

If using on the same local dev two different databases, one can't access both. But sending for example a
define( 'FIRST_DB', true )
would allow to switch from one db to the second.

[Daniel Bachhuber]

Thanks for the suggestion, @jcvignoli !

This is achievable with a little bit of custom code:

$ cat hook.php
<?php
WP_CLI::add_hook(
	'before_run_command',
	function( $command ) {
		$base = array_shift( $command ); 
		if ( 'plugin' === $base ) {
			WP_CLI::log( 'You ran the plugin command!' );
		}
	}
);
$ wp --require=hook.php plugin status hello
You ran the plugin command!
Plugin hello details:
    Name: Hello Dolly
    Status: Inactive
    Version: 1.7.2
    Author: Matt Mullenweg
$ wp --require=hook.php theme status twentytwentyfour
Theme twentytwentyfour details:
    Name: Twenty Twenty-Four
    Status: Inactive
    Version: 1.0
    Author: the WordPress team

[Jean-Claude Vignoli]

@danielbachhuber, this doesn't work.
I tried the following code:

WP_CLI::add_hook(
	'before_run_command',
	function( $command ) {
		define('MY_CONST_THAT_CHANGE_DB', true);
		WP_CLI::log( 'You ran the plugin command!' );
	}
);

A wp config list (with the --require) shows me it swittched to the correct database. However, a wp cron run event --due-now sticks to the default database, the one that is selected if the constant is not found.
The constant is not passed when using this method.

[Daniel Bachhuber]

However, a wp cron run event --due-now sticks to the default database, the one that is selected if the constant is not found.
The constant is not passed when using this method.

@jcvignoli Is the constant already defined?

[Jean-Claude Vignoli]

@danielbachhuber No, it's only generated in the file added in the --require command. I don't get any PHP message saying the const is already defined.
For the sake of debugging, I launched a cron command with adding in my wp-config file a
print_r( MY_CONST_THAT_CHANGE_DB );
and got that
PHP Fatal error: Uncaught Error: Undefined constant "MY_CONST_THAT_CHANGE_DB" in /home/www/mywordpressinstall/wp-config.php:10
which is the line where print_r( MY_CONST_THAT_CHANGE_DB ); was added.

[Jean-Claude Vignoli]

@danielbachhuber could you reopen this very issue? Until a solution is found, there is no way afaik to pass a constant with a cron.

[Daniel Bachhuber]

Until a solution is found, there is no way afaik to pass a constant with a cron.

This is a support request though, not a bug with WP-CLI. The #cli channel on WordPress.org Slack is a good place to ask support questions.

I think, but I'm not positive, that cron might be spawning a HTTP request. If you define( 'DISABLE_WP_CRON', true );, you can run cron entirely with WP-CLI.