API platform providing all kinds of data for various apps and services.
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<?php
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
class Memcache {
public $memcache;
private bool $enabled;
private string $server;
private string $prefix;
private int $port;
private $dummycache;
/**
*
* @param bool $enabled true to enable memcached, false to use non-persistent dummy cache
* @param string $server
* @param int $port
* @param string $prefix Prefix to add to keys to avoid conflicts with other apps on same server
*/
function __construct(bool $enabled = false, string $server = "127.0.0.1", int $port = 11211, string $prefix = "") {
$this->enabled = $enabled;
$this->server = $server;
$this->port = $port;
$this->prefix = $prefix;
if ($enabled) {
$this->memcache = new Memcached();
$this->memcache->addServer($this->server, $this->port);
}
$this->dummycache = [];
}
/**
* Check if the memcache is actually setup or if it's a dummy shim.
* @return bool true if memcache is enabled, false if only dummy cache enabled
*/
function enabled(): bool {
return $this->enabled;
}
/**
* Get the value for key.
* @param string $key
* @return value or false if not found
*/
function get(string $key) {
if ($this->enabled) {
$key = $this->prefix . $key;
return $this->memcache->get($key);
} else {
if (!empty($this->dummycache[$key])) {
return $this->dummycache[$key];
}
return false;
}
}
/**
* Set the value of $key to $val
* @param string $key
* @param type $val
* @param int $expires number of seconds (max 60*60*24*30) or UNIX timestamp for cache expiry
* Default expiration of 0 means no expiration
*/
function set(string $key, $val, int $expires = 0) {
if ($expires < 0) {
$expires = 0;
}
if ($this->enabled) {
$key = $this->prefix . $key;
$this->memcache->set($key, $val, $expires);
} else {
$this->dummycache[$key] = $val;
}
}
/**
* Get the cache key prefix string
* @return string
*/
function getPrefix(): string {
return $this->prefix;
}
function getMemcached() {
return $this->memcache;
}
}