update : 2015.11.03
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Poll connections
mysqli
PHP Manual

mysqli::poll

mysqli_poll

(PHP 5 >= 5.3.0)

mysqli::poll -- mysqli_poll — Poll connections

설명

객체 기반 형식

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

절차식 형식

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

Poll connections. mysqlnd에서만 사용할 수 있습니다. The method can be used as static.

인수

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

Number of seconds to wait, must be non-negative.

usec

Number of microseconds to wait, must be non-negative.

반환값

Returns number of ready connections upon success, FALSE otherwise.

예제

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));
?>

위 예제의 출력:

Array
(
    [0] => test
)

참고

mysqli
PHP Manual