警告foreach()的参数无效

Question

好吧，我最近购买了一个名为WPArcade的wordpress插件，但是，我遇到了一些问题。特别是，我不能让我的游戏像他们想要的那样进食。当我尝试从Kongregate输入游戏时，它显示找到0个游戏，但同时也显示以下错误：

警告:第113行为C:\Program Files (x86)\Ampps\www\wp\wp-content\plugins\wparcade-plugin\feeds\kongregate\kongregate.php中的foreach()提供的参数无效

我在一个本地服务器上测试这个站点，这就是为什么它在C驱动器中。

Kongregates提要：http://www.kongregate.com/games_for_your_site.xml

插件中的每个发布者都会发生这种情况，除了一个不会抛出警告的发布者。

第113到155行: Kongregate

$xml = simplexml_load_string($get_kongregate_feed);

foreach($xml->game as $game) {  
    $id = intval($game->id);
    $name = mysql_real_escape_string($game->title);
    $check_id = $wpdb->get_var("SELECT id FROM ".$wpdb->prefix."wparcade_kongregate_games WHERE id = '$id'");
    $count = mysql_result(mysql_query("SELECT COUNT(*) as newgames FROM ".$wpdb->prefix."wparcade_kongregate_games WHERE id = '$check_id'"),0);

    if($count !== '1') {
        $name = mysql_real_escape_string($game->title);
        $slug = mysql_real_escape_string($game->title);
        $slug = wparcade_stringforslug($slug);
        $category = mysql_real_escape_string($game->category);
        $category = wparcade_strstr_before($category, " & ");
        if(!$category) $category = mysql_real_escape_string($game->category);
        $categories = mysql_real_escape_string($game->category);
        $categories = str_replace(' & ', ', ', $categories);
        if(!$categories) $categories = mysql_real_escape_string($game->category);
        $description = mysql_real_escape_string($game->description);
        $instructions = mysql_real_escape_string($game->instructions);
        $thumbnail_url = mysql_real_escape_string($game->thumbnail);
        $swf_url = mysql_real_escape_string($game->flash_file);
        $width = $game->width;
        $height = $game->height;
        $tags = strtolower($categories);
        $author = mysql_real_escape_string($game->developer_name);
        $wparcade_kongregate_feed_game_status = $options['kongregate_feed_game_status'];
        $status = $wparcade_kongregate_feed_game_status;
        $feedsinglecat_id = $options['kongregate_feed_single_cat'];
        $feedcategory = get_cat_name($feedsinglecat_id);
        if($feedsinglecat_id !== 'none') { 
            $categories = $feedcategory;
            $category = $feedcategory;
        }

        $sql = "INSERT INTO ".$wpdb->prefix."wparcade_kongregate_games (id, name, slug, description, thumbnail_url, swf_url, width, height, author, categories, category, tags, instructions, status) VALUES ('$id', '$name', '$slug', '$description', '$thumbnail_url', '$swf_url', '$width', '$height', '$author', '$categories', '$category', '$tags', '$instructions', '$status')";

        $list .= '<li class="wparcade_new_games""><strong>'.$name.'</strong></li>';
        $wpdb->query($sql);
        $inserted++;

    } else {
        $list .= '<li class="wparcade_old_games"><strong>'.$name.'</strong></li>';
    }
}

以防万一，这是来自唯一有效的提要的代码：

$xml = simplexml_load_string($get_scirra_feed);

foreach($xml->game as $game) {  
    $id = intval($game->gameid);
    $name = mysql_real_escape_string($game->name);
    $count = mysql_result(mysql_query("SELECT COUNT(*) as newgames FROM ".$wpdb->prefix."wparcade_scirra_games WHERE id = '$id'"),0);
    $category = mysql_real_escape_string($game->category);
    $slug = mysql_real_escape_string($game->name);
    $slug = wparcade_stringforslug($slug);
    $check_for = $wpdb->get_var("SELECT name FROM ".$wpdb->prefix."wparcade_scirra_games WHERE slug = '$slug'");

    if($count !== '1' && $category !== 'Example' && !$check_for) {
        $name = mysql_real_escape_string($game->name);
        $slug = mysql_real_escape_string($game->name);
        $slug = wparcade_stringforslug($slug);
        $category = mysql_real_escape_string($game->category);
        $category = str_replace('Shooter', 'Shooting', $category);
        $category = str_replace('Defence', 'Defense', $category);
        $category = str_replace('Puzzle', 'Puzzles', $category);
        $category = str_replace('Rotary', 'Arcade, Rotary', $category);
        $categories = $category;
        $description = strip_tags(mysql_real_escape_string($game->description));
        $instructions = strip_tags(mysql_real_escape_string($game->instructions));
        $thumbnail_url = $game->images->small;
        $thumbnail_large_url = $game->images->medium;
        $screen1_url = $game->images->big;
        $embed_url = mysql_real_escape_string($game->embedurl);
        $embed_url = str_replace('http://', '//', $embed_url);
        $embed_url = str_replace('//', 'http://', $embed_url);
        $width = $game->width;
        $height = $game->height;
        $tags = strtolower($categories);
        $author = mysql_real_escape_string($game->author->username);
        $wparcade_scirra_feed_game_status = $options['scirra_feed_game_status'];
        $status = $wparcade_scirra_feed_game_status;
        $feedsinglecat_id = $options['scirra_feed_single_cat'];
        $feedcategory = get_cat_name($feedsinglecat_id);
        if($feedsinglecat_id !== 'none') { 
            $categories = $feedcategory;
            $category = $feedcategory;
        }

        $sql = "INSERT INTO ".$wpdb->prefix."wparcade_scirra_games (id, name, slug, description, thumbnail_url, thumbnail_large_url, screen1_url, embed_url, width, height, author, categories, category, tags, instructions, status) VALUES ('$id', '$name', '$slug', '$description','$thumbnail_url', '$thumbnail_large_url', '$screen1_url', '$embed_url', '$width', '$height', '$author', '$categories', '$category', '$tags', '$instructions', '$status')";

        $list .= '<li class="wparcade_new_games""><strong>'.$name.'</strong></li>';
        $wpdb->query($sql);
        $inserted++;

    } else {
        $list .= '<li class="wparcade_old_games"><strong>'.$name.'</strong></li>';
    }
}

提前感谢您的帮助。

另外，我在插件的支持网站上询问过了，但几乎已经过了一个星期了，没有得到任何答复。

Answer 1

这里的问题是，对于Kongregate，$xml->游戏不是一个可迭代的对象(像数组一样)。最简单的调试方法是在第113行，尝试插入如下内容：

print_r($xml->game); 
//or
print_r($xml);

让数据可见性了解哪些是工作的，哪些是不工作的，这可能会帮助您更好地理解为什么不工作。祝好运!