使用Google图像API和CURL检索图像总是得到相同的链接 - Retrieving images with Google images API and CURL gets always same link

Retrieving images with Google images API and CURL gets always same link

我正在尝试使用Google的API和PHP获取许多不同的图像。该代码适用于单个图像，但当我试图在for-LOOP中使用相同的代码获得不同主题的图像时，我总是只得到第一个结果：

$images = array("ironman poster", "superman returns poster", "the croods poster", "batman forever poster");
foreach ($images as $i) {
    $image = rawurlencode($i);
    $query = "https://ajax.googleapis.com/ajax/services/search/images?v=1.0&q=".$image."&imgsz=large&as_filetype=jpg";
    $json = get_url_contents($query);
    $data = json_decode($json);
    foreach ($data->responseData->results as $result) {
        $results[] = array("url" => $result->url, "alt" => $result->title);
    }
    echo $results[0]['url'];
    echo "<br />";
    echo $query;
    echo "<br />";
}
function get_url_contents($url) {
    $crl = curl_init();
    curl_setopt($crl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)');
    curl_setopt($crl, CURLOPT_URL, $url);
    curl_setopt($crl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($crl, CURLOPT_CONNECTTIMEOUT, 5);
    $ret = curl_exec($crl);
    curl_close($crl);
    return $ret;
}

在循环迭代之前，您需要定义$results数组。我真的不确定为什么不起作用，也许其他人可以详细说明？

工作解决方案：

$images=array（"铁人海报"、"超人归来海报"、《克鲁德海报》、"蝙蝠侠永远海报"）；

foreach ($images as $i) {
    $image = rawurlencode($i);
    $query = "https://ajax.googleapis.com/ajax/services/search/images?v=1.0&q=".$image."&imgsz=large&as_filetype=jpg";
    $json = get_url_contents($query);
    $data = json_decode($json);
    $results = array(); //define array here!
    foreach ($data->responseData->results as $result) {
        $results[] = array("url" => $result->url, "alt" => $result->title);
    }
    echo $results[0]['url'];
    echo "<br />";
    echo $query;
    echo "<br />";
}