如果php数组包含value，则指定一个样式

嗨，我使用tmdb api和获取演员电影列表var json。代码的工作方式，我希望它除了我试图风格的电影缩略图不同于其他如果电影是一个恐怖。

$tmdb = $_GET['tmdb'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://api.themoviedb.org/3/person/".$tmdb."?api_key=#######");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
$person = curl_exec($ch);
curl_close($ch);
$actor= json_decode($person, true); // Decode the results into an array
$name = $actor['name'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://api.themoviedb.org/3/discover/movie?&with_cast=".$tmdb."&vote_count.gte=5&sort_by=release_date.desc&api_key=#######");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
$personCredits = curl_exec($ch);
curl_close($ch);
$credits= json_decode($personCredits, true); // Decode the results into an array
$counter4 = 0;
$counter5 = 0;
echo "<pre>";
print_r($credits);
echo "</pre>";
$page=1;
echo "<div style='width:800px;overflow:hidden;position:absolute;ktop:1100px;left:75'>";
while ( $page <= $credits['total_pages'] ) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "http://api.themoviedb.org/3/discover/movie?&with_cast=".$tmdb."&vote_count.gte=5&sort_by=release_date.desc&page=".$page."&api_key=#######");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_HEADER, FALSE);
    $personCredits = curl_exec($ch);
    curl_close($ch);
    $credits= json_decode($personCredits, true); // Decode the results into an array
    $resultsCount4=(count($credits['results']))-1;
    while ( $counter4 <= $resultsCount4 ) {
        // THIS IS WHERE I NEED HELP PLEASE>>>>>
        if($credits['results'][$counter4]['genre_ids'] == 27) {
            $style="horror"; 
        } else { $style="round"; }
        ////////////////////////////////////////////////////
        echo "<div style='width:200;height:260;float:left;text-overflow:ellipsis    white-space: nowrap; 
                        width: 14em; 
                        overflow: hidden;
                        '><center><div class='".$style."'><a href='"/?id=moviepage.php&ttno=".$credits['results'][$counter4]['id']."'"><img width='"154'" height='"231'"onerror='"this.src='nocover.png''" src='http://image.tmdb.org/t/p/w154/".$credits['results'][$counter4]['poster_path']."'></div><br>".$credits['results'][$counter4]['title']."<br>".$credits['results'][$counter4]['release_date']."</center></a></div>";
        $counter4++;
    }
    $page++;
    $counter4=0;
}

Json数组看起来像

    Array
      (
        [page] => 1
   [results] => Array
    (
        [0] => Array
            (
                [poster_path] => /ceVMgY3TzLrfEpaMfaOnPDYnfqA.jpg
                [adult] => 
                [overview] => John Wick is forced out of retirement by a former associate looking to seize control of a shadowy international assassins’ guild Bound by a blood oath to aid him, Wick travels to Rome and does battle against some of the world’s most dangerous killers.
                [release_date] => 2017-02-10
                [genre_ids] => Array
                    (
                        [0] => 28
                    )
                [id] => 324552
                [original_title] => John Wick: Chapter Two
                [original_language] => en
                [title] => John Wick: Chapter Two
                [backdrop_path] => /6TPIMjoyRKCKhCGeGigP99qQTWw.jpg
                [popularity] => 1.714191
                [vote_count] => 7
                [video] => 
                [vote_average] => 9.57
            )
        [1] => Array
            (
                [poster_path] => /l9Eu1e3qNvFSvi66WtHFBoHIgeT.jpg
                [adult] => 
                [overview] => A defense attorney works to get his teenage client acquitted of murdering his wealthy father.
                [release_date] => 2016-06-10
                [genre_ids] => Array
                    (
                        [0] => 18
                        [1] => 53
                    )
                [id] => 331583
                [original_title] => The Whole Truth
                [original_language] => en
                [title] => The Whole Truth
                [backdrop_path] => /1pwF12CCtUSmCifDGhZHohp5qYu.jpg
                [popularity] => 1.875005
                [vote_count] => 6
                [video] => 
                [vote_average] => 6.67
            )

Thanks in advance