用PHP写的基于Memcache的Queue实现代码

<?php
class MQ{
public static $client;
private static $m_real;
private static $m_front;
private static $m_data = array();
const QUEUE_MAX_NUM = 100000000;
const QUEUE_FRONT_KEY = _queue_item_front;
const QUEUE_REAL_KEY = _queue_item_real;
public static function setupMq($conf) {
self::$client = memcache_pconnect($conf);
self::$m_real = memcache_get(self::$client, self::QUEUE_REAL_KEY);
self::$m_front = memcache_get(self::$client, self::QUEUE_FRONT_KEY);
if (!isset(self::$m_real) || emptyempty(self::$m_real)) {
self::$real= 0;
}
if (!isset(self::$m_front) || emptyempty(self::$m_front)) {
self::$m_front = 0;
}
return self::$client;
}
public static function add($queue, $data) {
$result = false;
if (self::$m_real < self::QUEUE_MAX_NUM) {
if (memcache_add(self::$client, $queue.self::$m_real, $data)) {
self::mqRealChange();
$result = true;
}
}
return $result;
}
public static function get($key, $count) {
$num = 0;
for ($i=self::$m_front;$i<self::$m_front + $count;$i++) {
if ($dataTmp = memcache_get(self::$client, $key.$i)) {
self::$m_data[] = $dataTmp;
memcache_delete(self::$client, $key.$i);
$num++;
}
}
if ($num>0) {
self::mqFrontChange($num);
}
return self::$m_data;
}
private static function mqRealChange() {
memcache_add(self::$client, self::QUEUE_REAL_KEY, 0);
self::$m_real = memcache_increment(self::$client, self::QUEUE_REAL_KEY, 1);
}
private static function mqFrontChange($num) {
memcache_add(self::$client, self::QUEUE_FRONT_KEY, 0);
self::$m_front = memcache_increment(self::$client, self::QUEUE_FRONT_KEY, $num);
}
public static function mflush($memcache_obj) {
memcache_flush($memcache_obj);
}
public static function Debug() {
echo real:.self::$m_real."<br>/r/n";
echo front:.self::$m_front."<br>/r/n";
echo wait for process data:.intval(self::$m_real - self::$m_front);
echo "<br>/r/n";
echo <pre>;
print_r(self::$m_data);
echo <pre>;
}
}
define(FLUSH_MQ,0);//CLEAN ALL DATA
define(IS_ADD,0);//SET DATA
$mobj = MQ::setupMq(127.0.0.1,11211);
if (FLUSH_MQ) {
MQ::mflush($mobj);
} else {
if (IS_ADD) {
MQ::add(user_sync, 1test);
MQ::add(user_sync, 2test);
MQ::add(user_sync, 3test);
MQ::add(user_sync, 4test);
MQ::add(user_sync, 5test);
MQ::add(user_sync, 6test);
} else {
MQ::get(user_sync, 10);
}
}
MQ::Debug();
?>

MQ::setupMq(127.0.0.1,11211);//连接
MQ::add($key, $value);//添加数据到队列
MQ::add($key, $value);//添加数据到队列
MQ::add($key, $value);//添加数据到队列
MQ::add($key, $value);//添加数据到队列
MQ::add($key, $value);//添加数据到队列
MQ::add($key, $value);//添加数据到队列
MQ:get($key, 10);//取出一定数量的数据