2.0.17

includes/libraries/action-scheduler/classes/ActionScheduler_IntervalSchedule.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Class ActionScheduler_IntervalSchedule
+ */
+class ActionScheduler_IntervalSchedule implements ActionScheduler_Schedule {
+	/** @var DateTime */
+	private $start = NULL;
+	private $start_timestamp = 0;
+	private $interval_in_seconds = 0;
+
+	public function __construct( DateTime $start, $interval ) {
+		$this->start = $start;
+		$this->interval_in_seconds = (int)$interval;
+	}
+
+	/**
+	 * @param DateTime $after
+	 *
+	 * @return DateTime|null
+	 */
+	public function next( DateTime $after = NULL ) {
+		$after = empty($after) ? new DateTime('@0') : clone($after);
+		if ( $after > $this->start ) {
+			$after->modify('+'.$this->interval_in_seconds.' seconds');
+			return $after;
+		}
+		return clone( $this->start );
+	}
+
+	/**
+	 * @param DateTime $after
+	 *
+	 * @return DateTime|null
+	 */
+	public function interval_in_seconds() {
+		return $this->interval_in_seconds;
+	}
+
+	/**
+	 * For PHP 5.2 compat, since DateTime objects can't be serialized
+	 * @return array
+	 */
+	public function __sleep() {
+		$this->start_timestamp = $this->start->format('U');
+		return array(
+			'start_timestamp',
+			'interval_in_seconds'
+		);
+	}
+
+	public function __wakeup() {
+		$this->start = new DateTime('@'.$this->start_timestamp);
+	}
+}
+