is_network_only_plugin( string $plugin )

Checks for “Network: true” in the plugin header to see if this should be activated only as a network wide plugin. The plugin would also work when Multisite is not enabled.

Description Description

Checks for "Site Wide Only: true" for backward compatibility.

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Parameters Parameters


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

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Return Return

(bool) True if plugin is network only, false otherwise.

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Source Source

File: wp-admin/includes/plugin.php

function is_network_only_plugin( $plugin ) {
	$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
	if ( $plugin_data ) {
		return $plugin_data['Network'];
	return false;

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Changelog Changelog

Version Description
3.0.0 Introduced.

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