eio_grp_add

<?php
/*
 * Create a group request to open, read and close a file
 */

// Create temporary file and write some bytes to it
$temp_filename = dirname(__FILE__) ."/eio-file.tmp";
$fp = fopen($temp_filename, "w");
fwrite($fp, "some data");
fclose($fp);

/* Is called when the group requests are done */
function my_grp_done($data, $result) {
 var_dump($result == 0);
 @unlink($data);
}

/* Is called when eio_open() done */
function my_grp_file_opened_callback($data, $result) {
 global $grp;

 // $result should contain the file descriptor
 var_dump($result > 0);

 // Create eio_read() request and add it to the group
 // Pass file descriptor to the callback
 $req = eio_read($result, 4, 0,
   EIO_PRI_DEFAULT, "my_grp_file_read_callback", $result);
 eio_grp_add($grp, $req);
}

/* Is called when eio_read() done */
function my_grp_file_read_callback($data, $result) {
 global $grp;

 // Read bytes
 var_dump($result);

 // Create eio_close() request and add it to the group
 // $data should contain the file descriptor
 $req = eio_close($data);
 eio_grp_add($grp, $req);
}

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

// Create eio_open() request and add it to the group
$req = eio_open($temp_filename, EIO_O_RDWR | EIO_O_APPEND , NULL,
  EIO_PRI_DEFAULT, "my_grp_file_opened_callback", NULL);
eio_grp_add($grp, $req);

// Process requests
eio_event_loop();
?>