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執(zhí)行一次時是正常的，短時間（小于一秒）內連續(xù)請求多次就會出現(xiàn)只能成功執(zhí)行一條請求，后面的請求就會報錯說未收到回應或者收到多條相同的回應，可執(zhí)行代碼測試。

代碼如下：

PHP

<?php
$url = 'http://api.openweathermap.org/data/2.5/weather';

$query = filter_input(INPUT_GET, 'q');
$query || exit;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url . '?q=' . $query);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$response = json_decode(curl_exec($ch)) ?: curl_getinfo($ch);
curl_close($ch);

header("Content-Type: application/json", true, 200);
echo json_encode($response);
exit;

HTML

<!doctype html><html><head><title>Get Weather</title><style>table{border-collapse:collapse;}td,th {border:1px solid #ccc; padding: 3px 5px;}</style></head><body><table><thead><tr><th>name</th><th>id</th><th>main</th><th>description</th><th>icon</th></tr></thead><tbody></tbody></table><script src="http://cdn.staticfile.org/jquery/2.1.0/jquery.js"></script><script>
(function($) {
    var cities = ['Shanghai,CN', 'Chongqing,CN', 'Wuhan,CN', 'Guangzhou,CN', 'Shanghai,CN'];
    $.each(cities, function(_, city) {
        getWeather(city);
    });

    function getWeather(city) {
        $.getJSON('./ajax_proxy.php?q=' + city, function(resp) {
            var table = $('table');
            $.each(resp.weather, function(_, o) {
                var tr = $('<tr>');
                tr.append($('<td>').html(resp.name));
                $.each(o, function(k, v) {
                    tr.append($('<td>').html(v));
                });
                tr.appendTo(table.find('tbody'))
            });
        });
    }
})(window.jQuery);
</script><body></html>

How to work with us effectively

These are several recommendations how to work with our free service in more effective way:

Do not send requests more then 1 time per 10 minutes from one device.The weather is changing not so frequently as usual.

Use the name of the server as api.openweathermap.org. Please never use the IP of the server.

If possible please use city ID or city name instead of city coordinates. It is let us use cash server more effective.

The service is absolutely free and has some limitation of capacity. So if you do not get respond from server please do not try to repeat your request immediately, please repeat it in 10 min. Also please store your previous request data.

If you need secured SLA please contact us.