91 lines
2.0 KiB
PHP
91 lines
2.0 KiB
PHP
<?php
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/**
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* A basic caching interface that manifests use to store data.
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*
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* @package framework
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* @subpackage manifest
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*/
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interface ManifestCache {
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public function __construct($name);
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public function load($key);
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public function save($data, $key);
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public function clear();
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}
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/**
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* Stores manifest data in files in TEMP_DIR dir on filesystem
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*
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* @package framework
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* @subpackage manifest
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*/
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class ManifestCache_File implements ManifestCache {
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function __construct($name) {
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$this->folder = TEMP_FOLDER.'/'.$name;
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if (!is_dir($this->folder)) mkdir($this->folder);
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}
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function load($key) {
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$file = $this->folder.'/cache_'.$key;
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return file_exists($file) ? unserialize(file_get_contents($file)) : null;
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}
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function save($data, $key) {
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$file = $this->folder.'/cache_'.$key;
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file_put_contents($file, serialize($data));
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}
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function clear() {
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array_map('unlink', glob($this->folder.'/cache_*'));
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}
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}
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/**
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* Same as ManifestCache_File, but stores the data as valid PHP which gets included to load
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* This is a bit faster if you have an opcode cache installed, but slower otherwise
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*
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* @package framework
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* @subpackage manifest
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*/
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class ManifestCache_File_PHP extends ManifestCache_File {
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function load($key) {
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global $loaded_manifest;
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$loaded_manifest = null;
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$file = $this->folder.'/cache_'.$key;
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if (file_exists($file)) include $file;
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return $loaded_manifest;
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}
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function save($data, $key) {
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$file = $this->folder.'/cache_'.$key;
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file_put_contents($file, '<?php $loaded_manifest = '.var_export($data, true).';');
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}
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}
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/**
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* Stores manifest data in APC.
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* Note: benchmarks seem to indicate this is not particularly faster than _File
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*
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* @package framework
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* @subpackage manifest
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*/
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class ManifestCache_APC implements ManifestCache {
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protected $pre;
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function __construct($name) {
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$this->pre = $name;
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}
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function load($key) {
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return apc_fetch($this->pre.$key);
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}
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function save($data, $key) {
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apc_store($this->pre.$key, $data);
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}
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function clear() {
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}
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} |