我如何修复此循环以使用引导程序轮播显示我的数据库中的图像

message("<div class='btn sm-warning'>请选择一张图片.</div>");redirect_to('list_properties.php');}$id = $_GET['id'];$sql = "SELECT * FROM Pictures2 WHERE photo_id='$id';";$photos = 图片::find_by_sql($sql);?>

<div class="row"><div id="carouselExampleIndicators" class="carousel slide mx-auto" data-ride="carousel"><ol class="carousel-indicators"><?php$i=0;如果(计数($照片)){foreach ($photos as $photo) {如果($i==0){echo '<li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>';$i++;}别的{echo '<li data-target="#carouselExampleIndicators" data-slide-to="0"></li>';$i++;}}}?></ol><div class="carousel-inner"><?php$a=0;如果(计数($照片)){foreach ($photos as $photo) {如果($a==0){?><div class="carousel-item active"><img src="<?php echo $photo->image_path(); ?>"class="img-thumbnail img-responsive" alt="<?php echo $photo->title; ?>"/><?php$a++;}别的?>
<?php{?><div class="carousel-item"><img src="<?php echo $photo->image_path(); ?>"class="img-thumbnail img-responsive" alt="<?php echo $photo->title; ?>"/><?php$a++;}?>

message("<div class='btn sm-warning'>请选择一张图片.</div>");redirect_to('list_properties.php');}$id = $_GET['id'];$sql = "SELECT * FROM Pictures2 WHERE photo_id='$id';";$photos = 图片::find_by_sql($sql);?>

.

<ol class="carousel-indicators"><?php$i = 0;foreach($photos as $photo){如果($ i == 0){?><li data-target="#carouselExampleIndicators" data-slide-to="<?php echo $i; ?>"class="active"></li><?php$i++;}别的{如果($我！= 0){?><li data-target="#carouselExampleIndicators" data-slide-to="<?php echo $i; ?>"></li><?php$i++;}}?></ol><div class="carousel-inner"><?php$i = 0;foreach($photos as $photo){如果($ i == 0){?><div class="carousel-item active"><img src="<?php echo $photo->image_path(); ?>"class="img-thumbnail img-responsive" height="500" width="500" alt="<?php echo $photo->title; ?>"/>
<?php$i++;} 别的{如果($我！= 0){?><div class="carousel-item"><img src="<?php echo $photo->image_path(); ?>"class="img-thumbnail img-responsive" height="500" width="500" alt="<?php echo $photo->title; ?>"/>
<?php$i++;}}?>
<a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev"><span class="carousel-control-prev-icon" aria-hidden="true"></span><span class="sr-only">以前的</span></a><a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next"><span class="carousel-control-next-icon" aria-hidden="true"></span><span class="sr-only">下一步</span></a>

I tried using bootstrap carousel to display images from my database but something seem to be wrong with my loop...

<?php
  $message = "";
  if(empty($_GET['id'])) {
    $session->message("<div class='btn sm-warning'>please select an image.</div>");
    redirect_to('list_properties.php');
  } 
  $id      = $_GET['id'];
  $sql     = "SELECT * FROM pictures2 WHERE photograph_id='$id';";
  $photos = Picture::find_by_sql($sql);
?>

The fetch is all correct from the database but the loop displaying the images in the slide displays one image and the slide loops between the first and second slide only.

<div class="container">
<div class="row">
<div id="carouselExampleIndicators" class="carousel slide mx-auto" data-ride="carousel">
  <ol class="carousel-indicators">
    <?php 
     $i=0;
    if(count($photos)){
        foreach ($photos as $photo) {
            if($i==0){
                echo '<li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>';
                $i++;
            }
            else
            {
                echo '<li data-target="#carouselExampleIndicators" data-slide-to="0"></li>';
                $i++;
            }
        }
    }
   ?>
  </ol>
  <div class="carousel-inner">
   <?php
    $a=0;
    if(count($photos)){
        foreach ($photos as $photo) {
            if($a==0){
                ?>
            <div class="carousel-item active">
           <img src="<?php echo $photo->image_path(); ?>" class="img-thumbnail img-responsive"  alt="<?php echo $photo->title; ?>"/>
            <?php   
                $a++;
            }else
            ?>
    </div>
           <?php
            {
                ?>
            <div class="carousel-item">
           <img src="<?php echo $photo->image_path(); ?>" class="img-thumbnail img-responsive" alt="<?php echo $photo->title; ?>"/>
               <?php
                $a++;
            }
            ?>
    </div>
       <?php
        }
    }
   ?>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>
</div>
</div>

<?php
  $message = "";
  if(empty($_GET['id'])) {
    $session->message("<div class='btn sm-warning'>please select an image.</div>");
    redirect_to('list_properties.php');
  } 
  $id      = $_GET['id'];
  $sql     = "SELECT * FROM pictures2 WHERE photograph_id='$id';";
  $photos = Picture::find_by_sql($sql);
?>

.

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
 <?php
$i = 0; 
 foreach($photos as $photo){
        if($i == 0){
?>
<li data-target="#carouselExampleIndicators" data-slide-to="<?php echo $i; ?>" class="active"></li>
<?php
 $i++;  }else{
    if($i != 0){        
?>
<li data-target="#carouselExampleIndicators" data-slide-to="<?php echo $i; ?>" ></li>
<?php               
        } $i++;
    }
 }
?> 
  </ol>
  <div class="carousel-inner">
   <?php 
    $i = 0;  
    foreach($photos as $photo){
        if($i == 0){
    ?>
    <div class="carousel-item active">
    <img src="<?php echo $photo->image_path(); ?>" class="img-thumbnail img-responsive" height="500" width="500" alt="<?php echo $photo->title; ?>"/>
    </div>
    <?php               
    $i++;   } else{
        if($i != 0){    
    ?>
    <div class="carousel-item">
    <img src="<?php echo $photo->image_path(); ?>" class="img-thumbnail img-responsive" height="500" width="500" alt="<?php echo $photo->title; ?>"/>
    </div>
        <?php                           
        } $i++;
    }  
      }
    ?>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

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