在上传 php 时发送调整大小的图像的路径

Question

>我有一个简单的多图像上传脚本，可以调整图像大小以保持纵横比。调整大小工作正常。但是，即使语法正确，我似乎也无法将图像发送到正确的文件夹。

简而言之，这是我正在做的事情：

如果文件输入"图像"不为空，则在"../company_images" 创建的文件夹的名称是由"$photo_目录_名称"变量定义的 Uniqid。在此之后，为每个图像运行调整大小函数，然后将调整大小的图像放入由"$total_path"变量定义的上传文件夹中。

if(!empty($_FILES["Image"])){
$photo_directory_name = uniqid(rand(100, 1000));    
$photos_path = "company_images/" . $photo_directory_name;       
$directory = "../company_images/";      
if (!file_exists($directory . $photo_directory_name)) {
$upload_dir = mkdir($directory . $photo_directory_name, 0777, TRUE);
}else{
$upload_dir = $directory . $photo_directory_name;
}       

function resize($width, $height){   
  /* Get original image x y*/
  list($w, $h) = getimagesize($_FILES['Image']['tmp_name']);
  /* calculate new image size with ratio */
  $ratio = max($width/$w, $height/$h);
  $h = ceil($height / $ratio);
  $x = ($w - $width / $ratio) / 2;
  $w = ceil($width / $ratio);
  /* new file name */   
  $path =  $width.'x'.$height.'_'.$_FILES['Image']['name']; 
  $total_path = $directory . $photo_directory_name . $path; 

  /* read binary data from image file */
  $imgString = file_get_contents($_FILES['Image']['tmp_name']);
  /* create image from string */
  $image = imagecreatefromstring($imgString);
  $tmp = imagecreatetruecolor($width, $height);
  imagecopyresampled($tmp, $image,
    0, 0,
    $x, 0,
    $width, $height,
    $w, $h);
  /* Save image */
  switch ($_FILES['Image']['type']) {
    case 'image/jpeg':
      imagejpeg($tmp, $total_path, 100);
      break;
    case 'image/png':
      imagepng($tmp, $total_path, 0);
      break;
    case 'image/gif':
      imagegif($tmp, $total_path);
      break;
    default:
      exit;
      break;
  }
  return $total_path;
  /* cleanup memory */
  imagedestroy($image);
  imagedestroy($tmp);
}       

$max_file_size = 1024*1000; // 1mb
$valid_exts = array('jpeg', 'jpg', 'png', 'gif');
// thumbnail sizes
$sizes = array(1200 => 1000);
if ($_SERVER['REQUEST_METHOD'] == 'POST' AND isset($_FILES['Image'])) {
  if( $_FILES['Image']['size'] < $max_file_size ){
    // get file extension
    $ext = strtolower(pathinfo($_FILES['Image']['name'], PATHINFO_EXTENSION));
    if (in_array($ext, $valid_exts)) {

      /* resize image */
      foreach ($sizes as $w => $h) {
        $files[] = resize($w, $h);
      }
    } else {
     $response["message"] = 'photos_invalid_format';
     $errors++; 
    }
  } else{
    $response["message"] = 'photos_file_too_large';
    $errors++; 
  }
}
echo $total_path;   
}

任何帮助都非常感谢。谢谢

Answer 1

您在调整大小函数中使用了一些全局变量：

$directory 
$photo_directory_name

它们需要作为参数传入，或者在该函数中声明为全局变量：

function resize($width, $height){   
  global $directory, $photo_directory_name;
  // rest of function