Php/docs/function.eio-custom
eio_custom
(PECL eio >= 0.0.1dev)
eio_custom — Execute custom request like any other eio_* call
Description
eio_custom() executes custom function specified by
execute
processing it just like any other eio_* call.
Parameters
execute
Specifies 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 toexecute
viadata
argument without modificationsresult
value returned byexecute
pri
The request priority:
EIO_PRI_DEFAULT
,EIO_PRI_MIN
,EIO_PRI_MAX
, orNULL
. IfNULL
passed,pri
internally is set toEIO_PRI_DEFAULT
.callback
callback
function is called when the request is done. It should match the following prototype:void callback(mixed $data, int $result[, resource $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
data
Arbitrary variable passed to
callback
.
Return Values
eio_custom() returns request resource on success or FALSE
on error.
Examples
Example #1 eio_custom() example
<?php/* Callback for the custom callback */function my_custom_callback($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();?>
The above example will output something similar to:
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)