<?php

namespace SilverStripe\Core\Manifest;

/**
 * Same as ManifestCache_File, but stores the data as valid PHP which gets included to load
 * This is a bit faster if you have an opcode cache installed, but slower otherwise
 */
class ManifestCache_File_PHP extends ManifestCache_File
{
	function load($key)
	{
		global $loaded_manifest;
		$loaded_manifest = null;

		$file = $this->folder . '/cache_' . $key;
		if (file_exists($file)) {
			include $file;
		}

		return $loaded_manifest;
	}

	function save($data, $key)
	{
		$file = $this->folder . '/cache_' . $key;
		file_put_contents($file, '<?php $loaded_manifest = ' . var_export($data, true) . ';');
	}
}