警告foreach的无效参数（）

Question

好的，我最近购买了一个名为WPArcade的wordpress插件，但是，我一直有一些问题。特别是我无法让自己的游戏像他们想象的那样喂食。当我尝试从比如说Kongregate那里提供游戏时，它说找到0个游戏，但也给我这个错误：

警告：为C：\ Program Files（x86）\ Ampps \ www \ wp \ wp-content \ plugins \ wparcade-plugin \ feeds \ kongregate \ kongregate.php on line 113

我正在测试本地服务器上的站点，这就是它在C驱动器中的原因。

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

这与每个出版社中发生的插件，除了一个不把我的警告。

线113至155：Kongregate的

$xml = simplexml_load_string($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，这是唯一的饲料所使用的代码：

$xml = simplexml_load_string($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>'; 
    } 
} 

感谢您提前任何帮助。

P.S.我问了插件的支持网站，但已经差不多一个星期没有答案。

Answer 1

这里的问题是Kongregate $ xml->游戏不是一个可迭代的对象（如数组）。调试简单的方法是在线路113尝试插入类似：

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

获取数据的可视性是什么，是不工作可能会帮助你更好地理解为什么这是行不通的。祝你好运！