62 lines
1.2 KiB
PHP
62 lines
1.2 KiB
PHP
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<?php
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/**
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* Class ActionScheduler_Versions
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*/
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class ActionScheduler_Versions {
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/**
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* @var ActionScheduler_Versions
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*/
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private static $instance = NULL;
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private $versions = array();
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public function register( $version_string, $initialization_callback ) {
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if ( isset($this->versions[$version_string]) ) {
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return FALSE;
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}
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$this->versions[$version_string] = $initialization_callback;
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return TRUE;
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}
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public function get_versions() {
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return $this->versions;
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}
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public function latest_version() {
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$keys = array_keys($this->versions);
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if ( empty($keys) ) {
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return false;
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}
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uasort( $keys, 'version_compare' );
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return end($keys);
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}
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public function latest_version_callback() {
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$latest = $this->latest_version();
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if ( empty($latest) || !isset($this->versions[$latest]) ) {
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return '__return_null';
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}
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return $this->versions[$latest];
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}
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/**
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* @return ActionScheduler_Versions
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* @codeCoverageIgnore
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*/
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public static function instance() {
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if ( empty(self::$instance) ) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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/**
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* @codeCoverageIgnore
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*/
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public static function initialize_latest_version() {
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$self = self::instance();
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call_user_func($self->latest_version_callback());
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}
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}
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