Gets the basename of a plugin.

This method extracts the name of a plugin from its filename.

$file string Required

The filename of plugin.

string The name of a plugin.

This function gets the path to a plugin file or directory, relative to the plugins directory, without the leading and trailing slashes.
Uses both the WP_PLUGIN_DIR and WPMU_PLUGIN_DIR constants internally, to test for and strip the plugins directory path from the $file path. Note that the direct usage of WordPress internal constants is not recommended.

File: wp-includes/plugin.php. View all references

function plugin_basename( $file ) {
	global $wp_plugin_paths;

	// $wp_plugin_paths contains normalized paths.
	$file = wp_normalize_path( $file );

	arsort( $wp_plugin_paths );

	foreach ( $wp_plugin_paths as $dir => $realdir ) {
		if ( strpos( $file, $realdir ) === 0 ) {
			$file = $dir . substr( $file, strlen( $realdir ) );
		}
	}

	$plugin_dir    = wp_normalize_path( WP_PLUGIN_DIR );
	$mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR );

	// Get relative path from plugins directory.
	$file = preg_replace( '#^' . preg_quote( $plugin_dir, '#' ) . '/|^' . preg_quote( $mu_plugin_dir, '#' ) . '/#', '', $file );
	$file = trim( $file, '/' );
	return $file;
}