<?php
/**
 * air\config::path_get('mysql.config.air');
 * @see https://github.com/wukezhan/air/blob/master/tests/mysqli.inc.php
 * @see https://github.com/wukezhan/air/blob/master/tests/004.mysql.phpt
 */
$b1 = new air\mysql\builder('mysql.config.air');
$b2 = new air\mysql\builder('mysql.config.air');
$b3 = new air\mysql\builder('mysql.config.air');
$start = time();
$b1->async()->query('SELECT 1 AS a, sleep(1) AS b');
$b2->async()->query('SELECT 2 AS a, sleep(1) AS b');
$b3->async()->query('SELECT 3 AS a, sleep(1) AS b');
// really start all the async queries
var_dump($b1->data()); // or var_dump($b[0]); // or foreach($b as $k=>$v){...}
var_dump($b2->data());
var_dump($b3->data());
// will totally use 1 second but not 3 seconds
echo time()-$start, "\n";

<?php
/**
 * @see https://github.com/wukezhan/air/blob/master/tests/server.inc.php
 * @see https://github.com/wukezhan/air/blob/master/tests/003.curl.phpt
 */
function data2arr($ch, $data){
    return json_decode($data, 1);
}

$c1 = new air\curl();
$c1->async();
$c1->setopt(CURLOPT_RETURNTRANSFER, 1);
$c1->get(local_server::$host_port . '/get.php?hello=world-1');

$c2 = new air\curl();
$c2->async()
    ->setopt(CURLOPT_RETURNTRANSFER, 1)
    ->get(local_server::$host_port . '/json.php?hello=world-2')
    ->on_success('data2arr')
;

echo $c1->data();
var_dump($c2->data());