(No version information available, might be only in CVS)
mysqli::poll -- mysqli_poll — Poll connections
本函数暂无文档，仅有参数列表。
Poll connections. Available only with mysqlnd.
Number of seconds to wait, must be non-negative.
Number of microseconds to wait, must be non-negative.
Returns number of ready connections in success, FALSE otherwise.
Example #1 A mysqli_poll() example
<?php
$link1 = mysqli_connect();
$link1->query("SELECT 'test'", MYSQLI_ASYNC);
$all_links = array($link1);
$processed = 0;
do {
$links = $errors = $reject = array();
foreach ($all_links as $link) {
$links[] = $errors[] = $reject[] = $link;
}
if (!mysqli_poll($links, $errors, $reject, 1)) {
continue;
}
foreach ($links as $link) {
if ($result = $link->reap_async_query()) {
print_r($result->fetch_row());
mysqli_free_result($result);
$processed++;
}
}
} while ($processed < count($all_links));
?>
上例将输出：
Array
(
[0] => test
)