(PHP 5 >= 5.3.0)
mysqli::poll -- mysqli_poll — Poll connections
面向对象风格
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )过程化风格
&$read
, array &$error
, array &$reject
, int $sec
[, int $usec
] )本函数还未编写文档，仅有参数列表。
Poll connections. 仅可用于 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));
?>
以上例程会输出：
Array
(
[0] => test
)