PHP:Pthread+；内存缓存故障

Memcache在pthread线程中似乎不起作用

我得到这个警告：

Warning: Memcache::get(): No servers added to memcache connection in test.php on line 15



   class Test extends Thread {

    protected $memcache;

    function __construct() {
        $this->memcache = New Memcache;
        $this->memcache->connect('localhost',11211 ) or die("Could not connect");
    }

    public function run() {
        $this->memcache->set('test', '125', MEMCACHE_COMPRESSED, 50);
        $val = $this->memcache->get('test');p
        echo "Value $val.";
        sleep(2);
    }

}

$threads = [];
for ($t = 0; $t < 5; $t++) {
    $threads[$t] = new Test();
    $threads[$t]->start();
}

for ($t = 0; $t < 5; $t++) {
    $threads[$t]->join();
}

警告：Memcache:：get（）：第15行的test.php中没有向Memcache连接添加服务器
类测试扩展了线程{
受保护的$memcache；
函数_u构造（）{
$this->memcache=新建memcache；
$this->memcache->connect（'localhost'，11211）或die（“无法连接”）；
}
公共功能运行（）{
$this->memcache->set（'test'，'125'，memcache\u COMPRESSED，50）；
$val=$this->memcache->get（'test'）；p
回声“价值$val.”；
睡眠（2）；
}
}
$threads=[]；
对于（$t=0；$t<5；$t++）{
$threads[$t]=新测试（）；
$threads[$t]->start（）；
}
对于（$t=0；$t<5；$t++）{
$threads[$t]->join（）；
}

由于memcache对象不准备在线程之间共享，因此必须为每个线程创建到memcached的连接，还必须确保不要将memcached连接写入线程对象上下文

以下任一代码示例都很好：

<?php
class Test extends Thread {

    public function run() {
        $memcache = new Memcache;

        if (!$memcache->connect('127.0.0.1',11211 ))
            throw new Exception("Could not connect");

        $memcache->set('test', '125', MEMCACHE_COMPRESSED, 50);
        $val = $memcache->get('test');
        echo "Value $val.\n";
    }

}

$threads = [];
for ($t = 0; $t < 5; $t++) {
    $threads[$t] = new Test();
    $threads[$t]->start();
}

for ($t = 0; $t < 5; $t++) {
    $threads[$t]->join();
}

<?php
class Test extends Thread {
    protected static $memcache;

    public function run() {
        self::$memcache = new Memcache;

        if (!self::$memcache->connect('127.0.0.1',11211 ))
            throw new Exception("Could not connect");

        self::$memcache->set('test', '125', MEMCACHE_COMPRESSED, 50);
        $val = self::$memcache->get('test');
        echo "Value $val.\n";
    }

}

$threads = [];
for ($t = 0; $t < 5; $t++) {
    $threads[$t] = new Test();
    $threads[$t]->start();
}

for ($t = 0; $t < 5; $t++) {
    $threads[$t]->join();
}