function bbp_get_admin_repair_tool_registered_versions() {

	// Default return value
	$retval = array();

	// Get tools
	$tools  = bbp_get_admin_repair_tools( bbp_get_admin_repair_tool_page_id() );

	// Loop through tools
	if ( ! empty( $tools ) ) {
		$plucked = wp_list_pluck( $tools, 'version' );

		// Loop through components
		if ( count( $plucked ) ) {
			foreach ( $plucked as $versions ) {

				// Skip if empty
				if ( empty( $versions ) ) {
					continue;

				// Cast to array if string
				} elseif ( is_string( $versions ) ) {
					$versions = (array) $versions;
				}

				// Loop through versions
				foreach ( $versions as $version ) {

					// Skip if already in array
					if ( in_array( $version, $retval, true ) ) {
						continue;
					}

					// Add component to the array
					$retval[] = $version;
				}
			}
		}
	}

	// Filter & return
	return (array) apply_filters( 'bbp_get_admin_repair_tool_registered_versions', $retval );
}