(PHP 5 >= 5.3.0, PHP 7, PHP 8)
mysqli::poll -- mysqli_poll — Poll connections
Об'єктно-орієнтований стиль
&$read
,&$error
,&$reject
,$seconds
,$microseconds
= 0Процедурний стиль
&$read
,&$error
,&$reject
,$seconds
,$microseconds
= 0Poll connections. The method can be used as static.
Зауваження:
Доступно тільки з mysqlnd.
read
List of connections to check for outstanding results that can be read.
error
List of connections on which an error occurred, for example, query failure or lost connection.
reject
List of connections rejected because no asynchronous query has been run on for which the function could poll results.
seconds
Maximum number of seconds to wait, must be non-negative.
microseconds
Maximum number of microseconds to wait, must be non-negative.
Returns number of ready connections upon success, false
otherwise.
A ValueError is thrown when neither
the read
nor error
arguments are passed.
Версія | Опис |
---|---|
8.3.0 |
Now throws a ValueError exception when neither
the read nor error arguments are passed.
|
Приклад #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());
if (is_object($result))
mysqli_free_result($result);
} else die(sprintf("MySQLi Error: %s", mysqli_error($link)));
$processed++;
}
} while ($processed < count($all_links));
?>
Поданий вище приклад виведе:
Array ( [0] => test )