File Content: ActionScheduler_Versions.php <?php /** * Class ActionScheduler_Versions */ class ActionScheduler_Versions { /** * ActionScheduler_Versions instance. * * @var ActionScheduler_Versions */ private static $instance = null; /** * Versions. * * @var array<string, callable> */ private $versions = array(); /** * Registered sources. * * @var array<string, string> */ private $sources = array(); /** * Register version's callback. * * @param string $version_string Action Scheduler version. * @param callable $initialization_callback Callback to initialize the version. */ public function register( $version_string, $initialization_callback ) { if ( isset( $this->versions[ $version_string ] ) ) { return false; } // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_debug_backtrace $backtrace = debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS ); $source = $backtrace[0]['file']; $this->versions[ $version_string ] = $initialization_callback; $this->sources[ $source ] = $version_string; return true; } /** * Get all versions. */ public function get_versions() { return $this->versions; } /** * Get registered sources. * * Use with caution: this method is only available as of Action Scheduler's 3.9.1 * release and, owing to the way Action Scheduler is loaded, it's possible that the * class definition used at runtime will belong to an earlier version. * * @since 3.9.1 * * @return array<string, string> */ public function get_sources() { return $this->sources; } /** * Get latest version registered. */ public function latest_version() { $keys = array_keys( $this->versions ); if ( empty( $keys ) ) { return false; } uasort( $keys, 'version_compare' ); return end( $keys ); } /** * Get callback for latest registered version. */ public function latest_version_callback() { $latest = $this->latest_version(); if ( empty( $latest ) || ! isset( $this->versions[ $latest ] ) ) { return '__return_null'; } return $this->versions[ $latest ]; } /** * Get instance. * * @return ActionScheduler_Versions * @codeCoverageIgnore */ public static function instance() { if ( empty( self::$instance ) ) { self::$instance = new self(); } return self::$instance; } /** * Initialize. * * @codeCoverageIgnore */ public static function initialize_latest_version() { $self = self::instance(); call_user_func( $self->latest_version_callback() ); } /** * Returns information about the plugin or theme which contains the current active version * of Action Scheduler. * * If this cannot be determined, or if Action Scheduler is being loaded via some other * method, then it will return an empty array. Otherwise, if populated, the array will * look like the following: * * [ * 'type' => 'plugin', # or 'theme' * 'name' => 'Name', * ] * * @deprecated 3.9.2 Use ActionScheduler_SystemInformation::active_source(). * * @return array */ public function active_source(): array { _deprecated_function( __METHOD__, '3.9.2', 'ActionScheduler_SystemInformation::active_source()' ); return ActionScheduler_SystemInformation::active_source(); } /** * Returns the directory path for the currently active installation of Action Scheduler. * * @deprecated 3.9.2 Use ActionScheduler_SystemInformation::active_source_path(). * * @return string */ public function active_source_path(): string { _deprecated_function( __METHOD__, '3.9.2', 'ActionScheduler_SystemInformation::active_source_path()' ); return ActionScheduler_SystemInformation::active_source_path(); } } Submit