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is_plugin_inactive( string $plugin )

Determines whether the plugin is inactive.

Reverse of is_plugin_active(). Used as a callback.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

$plugin: (string) (Required) Path to the plugin file relative to the plugins directory.

(bool) True if inactive. False if active.

In the Admin Area:

<?php $active = is_plugin_inactive( $plugin ); ?>

In the front end, in a theme, etc…

<?php
include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
$active = is_plugin_inactive( $plugin );
?>

function is_plugin_inactive( $plugin ) {
	return ! is_plugin_active( $plugin );
}

Uses	Description
wp-admin/includes/plugin.php: is_plugin_active()	Determines whether a plugin is active.

Used By	Description
wp-admin/includes/template.php: do_block_editor_incompatible_meta_box()	Function that renders a “fake” meta box with an information message, shown on the block editor, when an incompatible meta box is found.
wp-admin/includes/ajax-actions.php: wp_ajax_install_plugin()	Ajax handler for installing a plugin.

Version	Description
3.1.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_plugin_inactive