Result callbacks方式在通过 Memcached::getDelayed()或 Memcached::getDelayedBykey()方法获取元素后，为结果集中每个元素调用一次。 回调函数可以接收到一个Memcached对象合一个数组描述的元素信息，此回调函数不需要返回任何信息。
Example #1 结果回调示例
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$items = array(
'key1' => 'value1',
'key2' => 'value2',
'key3' => 'value3'
);
$m->setMulti($items);
$m->getDelayed(array('key1', 'key3'), true, 'result_cb');
function result_cb($memc, $item)
{
var_dump($item);
}
?>
以上例程的输出类似于：
array(3) {
["key"]=>
string(4) "key1"
["value"]=>
string(6) "value1"
["cas"]=>
float(49)
}
array(3) {
["key"]=>
string(4) "key3"
["value"]=>
string(6) "value3"
["cas"]=>
float(50)
}
edwarddrapkin at gmail dot com (2009-03-11 17:54:11)
I was having trouble making method calls with the result callbacks in getDelayed, so I emailed the developer.
If you want to use a non-static method as a callback, use the following format: array($obj, 'method'); for example:
<?php
class foo {
private $M = false;
public function __construct() {
$this->M = new Memcached();
$this->M->addServer('localhost', 11211);
$this->M->set('a', 'test');
}
public function test() {
$this->M->getDelayed(array('a'), false, array($this, 'fun'));
}
public function fun() {
echo "Great Success!";
}
}
$f = new foo();
$f->test();
?>
or, alternatively:
<?php
class foo {
public $M = false;
public function __construct() {
$this->M = new Memcached();
$this->M->addServer('localhost', 11211);
$this->M->set('a', 'test');
}
public function fun() {
echo "Great Success!";
}
}
$f = new foo();
$f->M->getDelayed(array('a'), false, array($f, 'fun'));
?>
Works great, thanks Andrei :)