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eio_custom

(PECL eio >= 0.0.1dev)

eio_customExecute custom request like any other eio_* call.

Description

resource eio_custom ( callable $execute , int $pri , callable $callback [, mixed $data = NULL ] )

eio_custom() executes custom function specified by execute processing it just like any other eio_* call.

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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 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($data, $result);
$data is custom data passed to the request. $result contains request-specific result value; basically, the value returned by corresponding system call.

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)
 
 

 

 


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