(PHP 5 >= 5.3.0, PHP 7)
mysqli::poll -- mysqli_poll — Poll connections
Objektorientierter Stil
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )Prozeduraler Stil
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )Poll connections. Nur in mysqlnd verfügbar. The method can be used as static.
readList of connections to check for outstanding results that can be read.
errorList of connections on which an error occured, for example, query failure or lost connection.
rejectList of connections rejected because no asynchronous query has been run on for which the function could poll results.
secNumber of seconds to wait, must be non-negative.
usecNumber of microseconds to wait, must be non-negative.
Returns number of ready connections upon success, FALSE otherwise.
Beispiel #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));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Array
(
[0] => test
)