如何使用php上传和显示多张图片

<form action="upload.php" method="post" enctype="multipart/form-data">
  <input type="file" name="images[]" multiple>
  <input type="submit" value="上传">
</form>

<?php
// 检查是否有文件上传
if(isset($_FILES['images'])){
  $errors = array();
  $uploadedFiles = array();
  $extension = array("jpeg","jpg","png","gif");

  // 获取上传的文件名和临时文件路径
  foreach($_FILES['images']['tmp_name'] as $key => $tmp_name ){
    $file_name = $_FILES['images']['name'][$key];
    $file_tmp = $_FILES['images']['tmp_name'][$key];

    // 检查文件扩展名
    $ext = pathinfo($file_name, PATHINFO_EXTENSION);
    if(in_array($ext,$extension)){
      // 生成唯一的文件名
      $newFileName = uniqid().'.'.$ext;
      $uploadPath = "uploads/".$newFileName;

      // 将文件移动到指定目录
      if(move_uploaded_file($file_tmp,$uploadPath)){
        $uploadedFiles[] = $uploadPath;
      }
      else{
        $errors[] = "上传文件失败";
      }
    }
    else{
      $errors[] = "不支持的文件类型";
    }
  }

  // 显示上传结果
  if($errors){
    foreach($errors as $error){
      echo $error."<br>";
    }
  }
  if($uploadedFiles){
    foreach($uploadedFiles as $fileName){
      echo "上传成功: <a href='$fileName'>$fileName</a><br>";
    }
  }
}
?>

<?php
$uploadPath = "uploads/";
$files = scandir($uploadPath);
foreach($files as $file){
  if($file !== '.' && $file !== '..'){
    echo "<img src='$uploadPath$file' alt='图片'><br>";
  }
}
?>