从数组中取值并在mysql中选择它php

我有问题，我存储在数据库列（video_id）和它的值像那个存储（1,3,4,7）数字意味着视频的ID在视频表，存储视频标题和文字有关视频的所有信息，但是当我写代码来选择所有的视频，结果给我一个视频从数组中取值并在mysql中选择它php

<div class="panel-body"> 
    <? 
    $qu="SELECT video_id FROM `training_questions` WHERE id=$questions_id AND category_id=$training_id"; 
    $query_c= mysqli_query($con, $qu); 
    while ($row7 = mysqli_fetch_assoc($query_c)) { 
     $vedoes=$row['video_id']; 
     $pieces = explode(",", $vedoes); 
    } 
    for($i=0;$i<=count($pieces);$i++){ 
     $query = "SELECT * FROM `video` WHERE id IN $pieces[$i] "; 
     $query_che= mysqli_query($con, $query); 
     while ($row2 = mysqli_fetch_assoc($query_che)) { ?> 
      <div class="col-lg-3 col-sm-6"> 
       <div class="thumbnail"> 
        <div class="video-container"> 
         <div class="thumb"> <a href="video_details.php?id=<?= $row2['id'] ?>"> <img src="../upload/<?= $row2['img'] ?>" class="img-responsive img-rounded media-preview" alt=""> <span class="zoom-image"><i class="icon-play3"></i></span> </a> </div> 
         </div> 
        <div class="caption"> 
         <h6 class="no-margin"> 
          <a href ="video_details.php?id=<?= $row2['id'] ?>" class="text-default"><?= $row2['title'] ?> 
          </a> 
         </h6> 
        </div> 
       </div> 
      </div> 
     <? 
     } 
    } ?> 
</div>

我怎样才能解决呢？

来源

2017-01-02 Eng-Abdallah Jomaa

取出

$pieces = explode(",", $vedoes);

其用武之地

让您的循环条件这个样子的

for($i=0;$i<=count($vedoes);$i++)

希望它有助于

来源

2017-01-02 10:35:28 funsholaniyi

从数组中取值并在mysql中选择它php

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