(PHP 5 >= 5.3.0)
mysqli::poll -- mysqli_poll — Poll connections
Object oriented style
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )Procedural style
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )This function is currently not documented; only its argument list is available.
Poll connections. Available only with mysqlnd. The method can be used as static.
read
error
reject
sec
Number of seconds to wait, must be non-negative.
usec
Number of microseconds to wait, must be non-negative.
Returns number of ready connections upon success, FALSE otherwise.
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));
?>
The above example will output:
Array
(
[0] => test
)