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Checks if a plugin is not activated.
This function is the logical negation of is_plugin_active(). Used as a callback.
In the Admin Area:
<?php is_plugin_inactive($plugin) ?>
In the front end, in a theme, etc...
<?php include_once( ABSPATH . 'wp-admin/includes/plugin.php' ); ?>
<?php is_plugin_inactive($plugin) ?>
<?php
// Makes sure the plugin is defined before trying to use it
if ( ! function_exists('is_plugin_inactive')) {
require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
}
if (is_plugin_inactive('plugin-directory/plugin-file.php')) {
//plugin is not activated
}
?>
The file that defines this function (wp-admin/includes/plugin.php) is only loaded in the admin sections. In order to use is_plugin_active outside the admin pages, it's necessary to include or require plugin.php before trying to use it (as shown in the example).
Since Version 3.1
is_plugin_inactive() is defined in wp-admin/includes/plugin.php.
Conditional Tags: comments_open(), is_404(), is_admin(), is_admin_bar_showing(), is_archive(), is_attachment(), is_author(), is_category(), is_comments_popup(), is_date(), is_day(), is_feed(), is_front_page(), is_home(), is_local_attachment(), is_multi_author, is_month(), is_new_day(), is_page(), is_page_template(), is_paged(), is_plugin_active(), is_plugin_active_for_network(), is_plugin_inactive(), is_plugin_page(), is_post_type_archive(), is_preview(), is_search(), is_single(), is_singular(), is_sticky(), is_tag(), is_tax(), is_taxonomy_hierarchical(), is_time(), is_trackback(), is_year(), in_category(), in_the_loop(), is_active_sidebar(), is_active_widget(), is_blog_installed(), is_rtl(), is_dynamic_sidebar(), is_user_logged_in(), has_excerpt(), has_post_thumbnail(), has_tag(), pings_open(), email exists(), post_type_exists(), taxonomy_exists(), term_exists(), username exists(), wp_attachment_is_image(), wp_script_is()
