(PECL eio >= 0.0.1dev)
eio_custom — Execute custom request like any other eio_* call
eio_custom ( callable $execute , int $pri , callable $callback [, mixed $data = NULL ] ) : resource
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
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 $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
data
Arbitrary variable passed to callback.
eio_custom() returns request resource on success or false on error.
Example #1 eio_custom() example
<?php
/* Callback for the custom callback */
function my_custom_callback($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();
?> 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)
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https://www.php.net/manual/en/function.eio-custom.php