如何通过PHP使用Google Location API？

Question

我在共享的linux主机上运行我的脚本。几分钟的页面加载后，我在浏览器中收到“没有收到数据”的mesasge。这是我的剧本：

 <?php

$url="https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=-33.8670522,151.1957362&radius=500&types=food&name=cruise&key=my_key";

$response = get_web_page($url);
$resArr = array();
$resArr = json_decode($response);
echo "<pre>"; print_r($resArr); echo "</pre>";

function get_web_page($url) {
    $options = array (CURLOPT_RETURNTRANSFER => true, // return web page
    CURLOPT_HEADER => false, // don't return headers
    CURLOPT_FOLLOWLOCATION => true, // follow redirects
    CURLOPT_ENCODING => "", // handle compressed
    CURLOPT_USERAGENT => "test", // who am i
    CURLOPT_AUTOREFERER => true, // set referer on redirect
    CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect
    CURLOPT_TIMEOUT => 120, // timeout on response
    CURLOPT_MAXREDIRS => 10 ); // stop after 10 redirects

    $ch = curl_init ( $url );
    curl_setopt_array ( $ch, $options );
    $content = curl_exec ( $ch );
    $err = curl_errno ( $ch );
    $errmsg = curl_error ( $ch );
    $header = curl_getinfo ( $ch );
    $httpCode = curl_getinfo ( $ch, CURLINFO_HTTP_CODE );

    curl_close ( $ch );

    $header ['errno'] = $err;
    $header ['errmsg'] = $errmsg;
    $header ['content'] = $content;
    return $header ['content'];
}
?>

我猜钥匙有问题。我已经尝试为服务器和浏览器生成API密钥但没有工作。请指导我。