IT. Expert System.

PHP

Createsa request group.


eio_grp

(PECL eio >= 0.0.1dev)

eio_grpCreatesa request group.

Description

resource eio_grp ( callable $callback [, string $data = NULL ] )

eio_grp() creates a request group.

Parameters

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_grp() returns request group resource on success or FALSE on error.

Examples

Example #1 eio_grp() example

<?php
$temp_filename 
dirname(__FILE__) ."/eio-file.tmp";
$fp fopen($temp_filename"w");
fwrite($fp"some data");
fclose($fp);
$my_file_fd NULL;

/* Is called when the group requests are done */
function my_grp_done($data$result) {
 
// Remove the file, if it still exists
 
@unlink($data);
}

/* Is called when the temporary file is opened */
function my_grp_file_opened_callback($data$result) {
 global 
$my_file_fd$grp;

 
$my_file_fd $result;

 
$req eio_read($my_file_fd40,
   
EIO_PRI_DEFAULT"my_grp_file_read_callback");
 
eio_grp_add($grp$req);
}

/* Is called when the file is read */
function my_grp_file_read_callback($data$result) {
 global 
$my_file_fd$grp;

 
var_dump($result);

 
// Create request to close the file
 
$req eio_close($my_file_fd);

 
// Add request to the group
 
eio_grp_add($grp$req);
}

// Create request group
$grp eio_grp("my_grp_done"$temp_filename);

// Create request
$req eio_open($temp_filenameEIO_O_RDWR EIO_O_APPEND NULL,
  
EIO_PRI_DEFAULT"my_grp_file_opened_callback"NULL);

// Add request to the group
eio_grp_add($grp$req);

// Process requests
eio_event_loop();
?>

The above example will output something similar to:

 string(4) "some" 

See Also

  • eio_grp_cancel
  • eio_grp_add


Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 436 / 158794195. Delta: 0.02865 с