如何获取Flickr代码以显示正确的搜索结果？

Question

我拥有的代码应该允许用户进行搜索，图像计数和大小，但是在搜索后说汽车返回后，一些返回的图像不是汽车，并且与汽车无关。谁能帮我这个？代码在下面发布。我确实有api键，我刚刚将其删除。

<?php

class flickr
{
var $api;
function __construct($api)
{
    $this->api = $api;
}
function flickr_photos_search($search, $count_image, $size)
{
    $params = array(
        'api_key' => $this->api,
        'method' => 'flickr.photos.search',
        'text' => $search,
        'format' => 'rest',
        'per_page' => $count_image,
        'page' => 1
    );
    $xml    = $this->create_url($params);
    if (@$rsp = simplexml_load_file($xml)) {
        if (count($rsp) <> 0) {
            foreach ($rsp->photos->children() as $photo) {
                if ($photo->getName() == 'photo') {
                    $farm   = $photo->attributes()->farm;
                    $server = $photo->attributes()->server;
                    $id     = $photo->attributes()->id;
                    $secret = $photo->attributes()->secret;
                    if ($size == 'Med') {
                        $sz = "";
                    } else {
                        $sz = "_" . $size;
                    }
                    $gbr[] = '<img src="https://farm' . $farm . '.staticflickr.com/' . 
$server . '/' . $id . '_' . $secret . $sz . '.jpg' . '" /> ';
                }
            }
        } else {
            die("No images found!");
        }
    } else {
        die("wrong parameter");
    }
    return $gbr;
   }
function create_url($params)
{
    $encoded_params = array();
    foreach ($params as $k => $v) {

        $encoded_params[] = urlencode($k) . '=' . urlencode($v);
    }
    $url = "https://api.flickr.com/services/rest/?" . implode('&', $encoded_params);
    return $url;
 }
}
echo '<form method="post">';
echo '<label>Search : </label><input type"text" name="search" /><br/>';
echo '<label>Result : </label><input type"text" name="count" /> * max : 500<br/>';
echo '<label>Size : </label>
<select name="size">
<option value="s">Square</option>
<option value="q">Large Square</option>
<option value="t">Thumbnail</option>
<option value="m">Small</option>
</select><br/>';
echo '<input type="submit" name="submit" value="search" /><br/><hr/>';
echo '</form>';
if (isset($_POST['submit'])) {
if (!isset($_POST['search'])) {
    echo 'Please fill your search';
} else if (!isset($_POST['count'])) {
    echo 'Please fill image result';
} else {
    $search = $_POST['search'];
    $result = $_POST['count'];
    $size   = $_POST['size'];
    if ($size > 500) {
        $size = 500;
    }
    $flickr = new flickr('api key here');
    $gbr    = $flickr->flickr_photos_search($search, $result, $size);
    foreach ($gbr as $hasil) {
        echo $hasil . ' ';
    }
}
}
?>