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wp-content/plugins/jetpack-boost/app/lib/class-collection.php

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+<?php
+
+namespace Automattic\Jetpack_Boost\Lib;
+
+/**
+ * A collection of WordPress options that's stored as a single ar
+ */
+class Collection {
+
+	private $key;
+
+	/**
+	 * Collections imply that they may carry more data than regular options,
+	 * This might unnecessarily slow down sites.
+	 * Disable autoloading by default.
+	 *
+	 * @see autoload() to enable autoloading.
+	 *
+	 * @var bool
+	 */
+	private $autoload = false;
+
+	/**
+	 * @param string $key Collection key.
+	 */
+	public function __construct( $key ) {
+		$this->key = $key;
+	}
+
+	/**
+	 * Allow autoloading collections
+	 */
+	public function autoload() {
+		$this->autoload = true;
+		return $this;
+	}
+
+	/**
+	 * Get the whole collection
+	 *
+	 * @return array
+	 */
+	public function get() {
+		$result = get_option( $this->key, array() );
+		if ( is_array( $result ) ) {
+			return $result;
+		}
+		return array();
+	}
+
+	/**
+	 * Append a single item to the collection
+	 *
+	 * @param mixed $item
+	 *
+	 * @return bool
+	 */
+	public function append( $item ) {
+		$items = $this->get();
+
+		if ( ! in_array( $item, $items, true ) ) {
+			$items[] = $item;
+			return update_option( $this->key, $items, $this->autoload );
+		}
+
+		return false;
+	}
+
+	/**
+	 * Delete the whole collection
+	 *
+	 * @return bool
+	 */
+	public function delete() {
+		return delete_option( $this->key );
+	}
+}