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is_network_only_plugin()

is_network_only_plugin( string $plugin ): bool

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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

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

Parameters

$pluginstringrequired
Path to the plugin file relative to the plugins directory.

Return

bool True if plugin is network only, false otherwise.

Source

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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UsesDescription
get_plugin_data()wp-admin/includes/plugin.php

Parses the plugin contents to retrieve plugin’s metadata.

Used byDescription
WP_REST_Plugins_Controller::handle_plugin_status()wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php

Handle updating a plugin’s status.

WP_REST_Plugins_Controller::check_read_permission()wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php

Checks if the given plugin can be viewed by the current user.

WP_Plugins_List_Table::single_row()wp-admin/includes/class-wp-plugins-list-table.php
WP_Plugins_List_Table::prepare_items()wp-admin/includes/class-wp-plugins-list-table.php
activate_plugin()wp-admin/includes/plugin.php

Attempts activation of plugin in a “sandbox” and redirects on success.

is_wpmu_sitewide_plugin()wp-admin/includes/ms-deprecated.php

Deprecated functionality for determining if the current plugin is network-only.

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Changelog

VersionDescription
3.0.0Introduced.

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