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is_plugin_active › WordPress Function

Since2.5.0
Deprecatedn/a
› is_plugin_active ( $plugin )
Parameters:
  • (string) $plugin Path to the plugin file relative to the plugins directory.
    Required: Yes
Returns:
  • (bool) True, if in the active plugins list. False, not in the list.
Defined at:
Codex:

Determines whether a plugin is active.

Only plugins installed in the plugins/ folder can be active. Plugins in the mu-plugins/ folder can't be "activated," so this function will return false for those plugins. For more information on this and similar theme functions, check out the {@link Conditional Tags} article in the Theme Developer Handbook.


Related Functions: is_plugin_inactive, is_plugin_page, is_plugin_paused, list_plugin_updates, is_plugin_active_for_network

Source 

function is_plugin_active( $plugin ) {
	return in_array( $plugin, (array) get_option( 'active_plugins', array() ), true ) || is_plugin_active_for_network( $plugin );
}