is_plugin_active( string $plugin )

Check whether a plugin is active.

Description Description

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.

Parameters Parameters


(string) (Required) Path to the main plugin file from plugins directory.

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Return Return

(bool) True, if in the active plugins list. False, not in the list.

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Source Source

File: wp-admin/includes/plugin.php

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

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Changelog Changelog

Version Description
2.5.0 Introduced.

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