mysqli::poll

mysqli_poll

(PHP 5 >= 5.3.0, PHP 7)

mysqli::poll -- mysqli_poll — Poll connections

Descrierea

Stil obiect-orientat

public static mysqli::poll ( array &$read , array &$error , array &$reject , int $sec [, int $usec = 0 ] ) : int

Stil procedural

mysqli_poll ( array &$read , array &$error , array &$reject , int $sec [, int $usec = 0 ] ) : int

Poll connections. Disponibil numai cu mysqlnd. The method can be used as static.

Parametri

read

List of connections to check for outstanding results that can be read.

error

List of connections on which an error occured, 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.

sec

Maximum number of seconds to wait, must be non-negative.

usec

Maximum number of microseconds to wait, must be non-negative.

Valorile întoarse

Returns number of ready connections upon success, FALSE otherwise.

Exemple

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());
            if (is_object($result))
                mysqli_free_result($result);
        } else die(sprintf("MySQLi Error: %s", mysqli_error($link)));
        $processed++;
    }
} while ($processed < count($all_links));
?>

Exemplul de mai sus va afișa:

Array
(
    [0] => test
)

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