이거..해석좀..

$db    = new PDO('mysql:host=localhost;dbname=디비네임;charset=utf8', '아이디', '비밀번호');

$start = $_REQUEST['from'] / 1000;

$end   = $_REQUEST['to'] / 1000;

$sql   = sprintf('SELECT * FROM testdate WHERE `datetime` BETWEEN %s and %s',

    $db->quote(date('Y-m-d', $start)), $db->quote(date('Y-m-d', $end)));

$out = array();

foreach($db->query($sql) as $row) {

    $out[] = array(

        'id' => $row->id,

        'title' => $row->name,

        'url' => Helper::url($row->id),

        'start' => strtotime($row->datetime) . '000',

        'end' => strtotime($row->datetime_end) .'000'

    );

}

echo json_encode(array('success' => 1, 'result' => $out));

exit;