För de som är intresserade, här är vad jag använde:
<?php
// Connection to query on
$query_con = mysqli_connect($host, $user, $password, $name, $port);
// Connection to kill on
$kill_con = mysqli_connect($host, $user, $password, $name, $port);
// Start the query
$query_con->query($slow_query, MYSQLI_ASYNC);
// Get the PID
$thread_id = $query_con->thread_id;
// Ignore user abort so we can kill the query
ignore_user_abort(true);
do {
// Poll MySQL
$links = $errors = $reject = array($mysqli->mysqli);
$poll = mysqli_poll($links, $errors, $reject, 0, 500000);
// Check if the connection is aborted and the query was killed
if (connection_aborted() && mysqli_kill($kill_con, $thread_id)) {
die();
}
} while (!$poll);
// Not aborted, so do stuff with the result
$result = $link->reap_async_query();
if (is_object($result)) {
// Select
while ($row = $result->fetch_object()) {
var_dump($row);
}
} else {
// Insert/update/delete
var_dump($result);
}