(PECL eio >= 0.0.1dev)
Createsa request group.
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
Arbitrary variable passed to callback
.
Returns:
eio_grp() returns request group resource on success or FALSE
on error.
Examples:
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_fd, 4, 0, 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_filename, EIO_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"
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