(PECL eio >= 0.0.1dev)
eio_custom — Execute custom request like any other eio_* call
eio_custom() executes custom function specified by
execute processing it just like any other eio_* call.
executeSpecifies the request function that should match the following prototype:
mixed execute(mixed data);
callback is event completion callback that should match the following
prototype:
void callback(mixed data, mixed result);
data is the data passed to
execute via data argument
without modifications
result value returned by execute
pri请求的优先级：EIO_PRI_DEFAULT，EIO_PRI_MIN，EIO_PRI_MAX 或 NULL。如果是
NULL，pri 将设为
EIO_PRI_DEFAULT。
callback
callback
函数在请求完成时被调用。其应匹配一下原型：
void callback(mixed $data, int $result[, resource $req]);
data传递给请求的用户数据。
result针对请求的结果的值。通常是相应的系统调用返回的值。
req可选的请求资源，可被 eio_get_last_error() 之类的函数使用。
data
Arbitrary variable passed to callback.
eio_custom() returns request resource on success or FALSE on error.
Example #1 eio_custom() example
<?php
/* Callback for the custom callback */
function my_custom_callback($data, $result) {
var_dump($data);
var_dump(count($result));
var_dump($result['data_modified']);
var_dump($result['result']);
}
/* The custom request */
function my_custom($data) {
var_dump($data);
$result = array(
'result' => 1001,
'data_modified' => "my custom data",
);
return $result;
}
$data = "my_custom_data";
$req = eio_custom("my_custom", EIO_PRI_DEFAULT, "my_custom_callback", $data);
var_dump($req);
eio_event_loop();
?>
以上例程的输出类似于：
resource(4) of type (EIO Request Descriptor) string(14) "my_custom_data" string(14) "my_custom_data" int(2) string(14) "my custom data" int(1001)