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mysqli::poll

mysqli_poll

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

mysqli::poll -- mysqli_poll — Poll connections

Açıklama

Nesne yönelimli kullanım

public static mysqli::poll(
    ?array &$read,
    ?array &$error,
    array &$reject,
    int $seconds,
    int $microseconds = 0
): int|false

Yordamsal kullanım

mysqli_poll(
    ?array &$read,
    ?array &$error,
    array &$reject,
    int $seconds,
    int $microseconds = 0
): int|false

Poll connections. The method can be used as static.

Bilginize:

Sadece mysqlnd ile kullanılabilir.

Bağımsız Değişkenler

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.

Dönen Değerler

Returns number of ready connections upon success, false otherwise.

Hatalar/İstisnalar

A ValueError is thrown when neither the read nor error arguments are passed.

Sürüm Bilgisi

Sürüm: Açıklama
8.3.0 Now throws a ValueError exception when neither the read nor error arguments are passed.

Örnekler

Örnek 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));
?>

Yukarıdaki örneğin çıktısı:

Array
(
    [0] => test
)

Ayrıca Bakınız