Get result from async query

MysqlndUhConnection::queryReadResultsetHeader
MysqlndUhConnection::refreshServer
MysqlndUhConnection
PHP Manual

# MysqlndUhConnection::reapQuery

(PECL mysqlnd-uh >= 1.0.0-alpha)

MysqlndUhConnection::reapQuery — Get result from async query

### Description

public bool MysqlndUhConnection::reapQuery ( mysqlnd_connection `$connection` )

Get result from async query.

### Parameters

`connection`

  Mysqlnd connection handle. Do not modify!

### Return Values

Returns `TRUE` on success. Otherwise, returns `FALSE`

### Examples

Example #1 MysqlndUhConnection::reapQuery() example

`<?php
class proxy extends MysqlndUhConnection {
public function reapQuery($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::reapQuery($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$conn1 = new mysqli("localhost", "root", "", "test");
$conn2 = new mysqli("localhost", "root", "", "test");
$conn1->query("SELECT 1 as 'one', SLEEP(1) AS _sleep FROM DUAL", MYSQLI_ASYNC | MYSQLI_USE_RESULT);
$conn2->query("SELECT 1.1 as 'one dot one' FROM DUAL", MYSQLI_ASYNC | MYSQLI_USE_RESULT);
$links = array(
$conn1->thread_id => array('link' => $conn1, 'processed' => false),
$conn2->thread_id => array('link' => $conn2, 'processed' => false)
);
$saved_errors = array();
do {
$poll_links = $poll_errors = $poll_reject = array();
foreach ($links as $thread_id => $link) {
if (!$link['processed']) {
$poll_links[] = $link['link'];
$poll_errors[] = $link['link'];
$poll_reject[] = $link['link'];
}
}
if (0 == count($poll_links))
break;
if (0 == ($num_ready = mysqli_poll($poll_links, $poll_errors, $poll_reject, 0, 200000)))
continue;
if (!empty($poll_errors)) {
die(var_dump($poll_errors));
}
foreach ($poll_links as $link) {
$thread_id = mysqli_thread_id($link);
$links[$thread_id]['processed'] = true;
if (is_object($res = mysqli_reap_async_query($link))) {
// result set object
while ($row = mysqli_fetch_assoc($res)) {
// eat up all results
var_dump($row);
}
mysqli_free_result($res);
} else {
// either there is no result (no SELECT) or there is an error
if (mysqli_errno($link) > 0) {
$saved_errors[$thread_id] = mysqli_errno($link);
printf("'%s' caused %d\n", $links[$thread_id]['query'], mysqli_errno($link));
}
}
}
} while (true);
?>`

The above example will output:

    proxy::reapQuery(array (
      0 => NULL,
    ))
    proxy::reapQuery returns true
    array(1) {
      ["one dot one"]=>
      string(3) "1.1"
    }
    proxy::reapQuery(array (
      0 => NULL,
    ))
    proxy::reapQuery returns true
    array(2) {
      ["one"]=>
      string(1) "1"
      ["_sleep"]=>
      string(1) "0"
    }

### See Also

- mysqlnd_uh_set_connection_proxy() - Installs a proxy for mysqlnd connections
- mysqli_real_async_query()

MysqlndUhConnection::queryReadResultsetHeader
MysqlndUhConnection::refreshServer
MysqlndUhConnection
PHP Manual