结果回调
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 ( $item );
}
?> 以上例程的输出类似于：
array(3) {
["key"]=>
string(4) "key1"
["value"]=>
string(6) "value1"
["cas"]=>
float(49)
}
array(3) {
["key"]=>
string(4) "key3"
["value"]=>
string(6) "value3"
["cas"]=>
float(50)
}
用户评论:
[#1] edwarddrapkin at gmail dot com [2009-03-11 17:54:11]
I was having trouble making method calls with the result callbacks in getDelayed, so I emailed the developer.
If you want to use a non-static method as a callback, use the following format: array($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 :)