(PECL mysqlnd-uh >= 1.0.0-alpha)
MysqlndUhConnection::reapQuery — Get result from async query
$connection
)Get result from async query.
connection
Mysqlnd connection handle. Do not modify!
Returns TRUE on success.
Otherwise, returns FALSE
Example #1 MysqlndUhConnection::reapQuery() example
<?php
class proxy extends MysqlndUhConnection {
public function reapQuery($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);
?>
以上例程会输出：
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"
}