image-optimization
/
vendor
/
woocommerce
/
action-scheduler
/
classes
/
ActionScheduler_Versions.php
ActionScheduler_Versions.php in Image Optimizer – Compress Images and Convert to WebP or AVIF 1.0.2, at vendor/woocommerce/action-scheduler/classes/ActionScheduler_Versions.php
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Class ActionScheduler_Versions |
| 5 | */ |
| 6 | class ActionScheduler_Versions { |
| 7 | /** |
| 8 | * @var ActionScheduler_Versions |
| 9 | */ |
| 10 | private static $instance = NULL; |
| 11 | |
| 12 | private $versions = array(); |
| 13 | |
| 14 | public function register( $version_string, $initialization_callback ) { |
| 15 | if ( isset($this->versions[$version_string]) ) { |
| 16 | return FALSE; |
| 17 | } |
| 18 | $this->versions[$version_string] = $initialization_callback; |
| 19 | return TRUE; |
| 20 | } |
| 21 | |
| 22 | public function get_versions() { |
| 23 | return $this->versions; |
| 24 | } |
| 25 | |
| 26 | public function latest_version() { |
| 27 | $keys = array_keys($this->versions); |
| 28 | if ( empty($keys) ) { |
| 29 | return false; |
| 30 | } |
| 31 | uasort( $keys, 'version_compare' ); |
| 32 | return end($keys); |
| 33 | } |
| 34 | |
| 35 | public function latest_version_callback() { |
| 36 | $latest = $this->latest_version(); |
| 37 | if ( empty($latest) || !isset($this->versions[$latest]) ) { |
| 38 | return '__return_null'; |
| 39 | } |
| 40 | return $this->versions[$latest]; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * @return ActionScheduler_Versions |
| 45 | * @codeCoverageIgnore |
| 46 | */ |
| 47 | public static function instance() { |
| 48 | if ( empty(self::$instance) ) { |
| 49 | self::$instance = new self(); |
| 50 | } |
| 51 | return self::$instance; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * @codeCoverageIgnore |
| 56 | */ |
| 57 | public static function initialize_latest_version() { |
| 58 | $self = self::instance(); |
| 59 | call_user_func($self->latest_version_callback()); |
| 60 | } |
| 61 | } |
| 62 |