©
本文档使用 PHP中文网手册 发布
(PECL eio >= 0.0.1dev)
eio_custom — Execute custom request like any other eio_* call.
$execute
, int $pri
, callable $callback
[, mixed $data
= NULL
] ) eio_custom() executes custom function specified by
execute
processing it just like any other eio_* call.
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 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
function my_custom_callback ( $data , $result ) {
var_dump ( $data );
var_dump ( count ( $result ));
var_dump ( $result [ 'data_modified' ]);
var_dump ( $result [ 'result' ]);
}
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)