validate_plugin( string $plugin )

Validate the plugin path.

Description

Checks that the main plugin file exists and is a valid plugin. See validate_file().

Parameters

$plugin

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

Return

(WP_Error|int) 0 on success, WP_Error on failure.

Source

File: wp-admin/includes/plugin.php 

function validate_plugin($plugin) {
	if ( validate_file($plugin) )
		return new WP_Error('plugin_invalid', __('Invalid plugin path.'));
	if ( ! file_exists(WP_PLUGIN_DIR . '/' . $plugin) )
		return new WP_Error('plugin_not_found', __('Plugin file does not exist.'));

	$installed_plugins = get_plugins();
	if ( ! isset($installed_plugins[$plugin]) )
		return new WP_Error('no_plugin_header', __('The plugin does not have a valid header.'));
	return 0;
}

Expand Source Code View on GitHub

Related

Uses

Uses
Uses Description
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/class-wp-error.php: WP_Error::__construct()

Initialize the error.
wp-includes/functions.php: validate_file()

Validates a file name and path against an allowed set of rules.
wp-admin/includes/plugin.php: get_plugins()

Check the plugins directory and retrieve all plugin files with plugin data.

Used By

Used By
Used By Description
wp-admin/includes/plugin.php: activate_plugin()

Attempts activation of plugin in a “sandbox” and redirects on success.
wp-admin/includes/plugin.php: validate_active_plugins()

Validate active plugins

Changelog

Changelog
Version Description
WP-2.5.0 Introduced.