eio_cancel
(PECL eio >= 0.0.1dev)
eio_cancel — Cancels a request
Description
void eio_cancel ( resource $req ) eio_cancel() cancels a request specified by req
Parameters
req
The request resource
pri
The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.
callback
callback function is called when the request is done. It should match the following prototype:
void?callback(mixed?$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
No value is returned.
Examples
Example #1 eio_cancel() example
<?php
?/*?Is?called?when?eio_nop()?finished?*/
?function?my_nop_cb($data,?$result)?{
??echo?"my_nop?",?$data,?"\n";
?}
//?This?eio_nop()?call?will?be?cancelled
$req?=?eio_nop(EIO_PRI_DEFAULT,?"my_nop_cb",?"1");
var_dump($req);
eio_cancel($req);
//?This?time?eio_nop()?will?be?processed
eio_nop(EIO_PRI_DEFAULT,?"my_nop_cb",?"2");
//?Process?requests
eio_event_loop();
?>The above example will output something similar to:
resource(4) of type (EIO Request Descriptor)
my_nop 2See Also
- eio_grp_cancel
← eio_busy
eio_chmod →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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