Php/docs/function.eio-grp-add
eio_grp_add
(PECL eio >= 0.0.1dev)
eio_grp_add — Adds a request to the request group
说明
eio_grp_add
( resource $grp
, resource $req
) : void
eio_grp_add() adds a request to the request group.
返回值
eio_grp_add() doesn't return a value.
范例
Example #1 Grouping requests
<?php/* * Create a group request to open, read and close a file */// Create temporary file and write some bytes to it$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 requestseio_event_loop();?>
以上例程的输出类似于：
resource(6) of type (EIO Group Descriptor) bool(true) string(4) "some" bool(true)
参见
- eio_grp() - Creates a request group
- eio_grp_cancel() - Cancels a request group
- eio_grp_limit() - Set group limit
