爲什麼我的照片是用這個腳本旋轉的？

Question

不知道到底發生了什麼？但是，如果我有一個較大的圖片上傳（肖像）樣式，那麼它裁剪，然後旋轉它？我錯過了什麼。如果有一個max_width並且讓這個比率完成剩下的工作就好了。提前致謝。

<?php 
    function uploadImage($fileName, $maxSize, $maxW, $fullPath, $relPath, $colorR, $colorG, $colorB, $maxH = null){ 
     $folder = $relPath; 
     $maxlimit = $maxSize; 
     $allowed_ext = "jpg,jpeg"; 
     $match = ""; 
     $filesize = $_FILES[$fileName]['size']; 
     if($filesize > 0){ 
      $filename = strtolower($_FILES[$fileName]['name']); 
      $filename = preg_replace('/\s/', '_', $filename); 
      if($filesize < 1){ 
       $errorList[] = "File size is empty or too big"; 
      } 
      if($filesize > $maxlimit){ 
       $errorList[] = "File size is too big."; 
      } 
      if(count($errorList)<1){ 
       $file_ext = preg_split("/\./",$filename); 
       $allowed_ext = preg_split("/\,/",$allowed_ext); 
       foreach($allowed_ext as $ext){ 
        if($ext==end($file_ext)){ 
         $match = "1"; // File is allowed 
         $NUM = time(); 
         $front_name = substr($file_ext[0], 0, 15); 
         $newfilename = $front_name."_".$NUM.".".end($file_ext); 
         $filetype = end($file_ext); 
         $save = $folder.$newfilename; 
         if(!file_exists($save)){ 
          list($width_orig, $height_orig) = getimagesize($_FILES[$fileName]['tmp_name']); 
          if($maxH == null){ 
           if($width_orig < $maxW){ 
            $fwidth = $width_orig; 
           }else{ 
            $fwidth = $maxW; 
           } 
           $ratio_orig = $width_orig/$height_orig; 
           $fheight = $fwidth/$ratio_orig; 

           $blank_height = $fheight; 
           $top_offset = 0; 

          }else{ 
           if($width_orig <= $maxW && $height_orig <= $maxH){ 
            $fheight = $height_orig; 
            $fwidth = $width_orig; 
           }else{ 
            if($width_orig > $maxW){ 
             $ratio = ($width_orig/$maxW); 
             $fwidth = $maxW; 
             $fheight = ($height_orig/$ratio); 
             if($fheight > $maxH){ 
              $ratio = ($fheight/$maxH); 
              $fheight = $maxH; 
              $fwidth = ($fwidth/$ratio); 
             } 
            } 
            if($height_orig > $maxH){ 
             $ratio = ($height_orig/$maxH); 
             $fheight = $maxH; 
             $fwidth = ($width_orig/$ratio); 
             if($fwidth > $maxW){ 
              $ratio = ($fwidth/$maxW); 
              $fwidth = $maxW; 
              $fheight = ($fheight/$ratio); 
             } 
            } 
           } 
           if($fheight == 0 || $fwidth == 0 || $height_orig == 0 || $width_orig == 0){ 
            die("FATAL ERROR REPORT ERROR CODE [add-pic-line-67-orig] to <a href='http://www.atwebresults.com'>AT WEB RESULTS</a>"); 
           } 
           if($fheight < 45){ 
            $blank_height = 45; 
            $top_offset = round(($blank_height - $fheight)/2); 
           }else{ 
            $blank_height = $fheight; 
           } 
          } 
          $image_p = imagecreatetruecolor($fwidth, $blank_height); 
          $white = imagecolorallocate($image_p, $colorR, $colorG, $colorB); 
          imagefill($image_p, 0, 0, $white); 
          switch($filetype){ 
           case "gif": 
            $image = @imagecreatefromgif($_FILES[$fileName]['tmp_name']); 
           break; 
           case "jpg": 
            $image = @imagecreatefromjpeg($_FILES[$fileName]['tmp_name']); 
           break; 
           case "jpeg": 
            $image = @imagecreatefromjpeg($_FILES[$fileName]['tmp_name']); 
           break; 
           case "png": 
            $image = @imagecreatefrompng($_FILES[$fileName]['tmp_name']); 
           break; 
          } 
          @imagecopyresampled($image_p, $image, 0, $top_offset, 0, 0, $fwidth, $fheight, $width_orig, $height_orig); 
          switch($filetype){ 
           case "gif": 
            if(!@imagegif($image_p, $save)){ 
             $errorList[]= "PERMISSION DENIED [GIF]"; 
            } 
           break; 
           case "jpg": 
            if(!@imagejpeg($image_p, $save, 100)){ 
             $errorList[]= "PERMISSION DENIED [JPG]"; 
            } 
           break; 
           case "jpeg": 
            if(!@imagejpeg($image_p, $save, 100)){ 
             $errorList[]= "PERMISSION DENIED [JPEG]"; 
            } 
           break; 
           case "png": 
            if(!@imagepng($image_p, $save, 0)){ 
             $errorList[]= "PERMISSION DENIED [PNG]"; 
            } 
           break; 
          } 
          @imagedestroy($filename); 
         }else{ 
          $errorList[]= "CANNOT MAKE IMAGE IT ALREADY EXISTS"; 
         } 
        } 
       }  
      } 
     }else{ 
      $errorList[]= "NO FILE SELECTED"; 
     } 
     if(!$match){ 
      $errorList[]= "File type isn't allowed (ONLY JPG or JPEG) : $filename"; 
     } 
     if(sizeof($errorList) == 0){ 
      return $fullPath.$newfilename; 
     }else{ 
      $eMessage = array(); 
      for ($x=0; $x<sizeof($errorList); $x++){ 
       $eMessage[] = $errorList[$x]; 
      } 
      return $eMessage; 
     } 
    } 

    $filename = strip_tags($_REQUEST['filename']); 
    $maxSize = strip_tags($_REQUEST['maxSize']); 
    $maxW = strip_tags($_REQUEST['maxW']); 
    $fullPath = strip_tags($_REQUEST['fullPath']); 
    $relPath = strip_tags($_REQUEST['relPath']); 
    $colorR = strip_tags($_REQUEST['colorR']); 
    $colorG = strip_tags($_REQUEST['colorG']); 
    $colorB = strip_tags($_REQUEST['colorB']); 
    $maxH = strip_tags($_REQUEST['maxH']); 
    $filesize_image = $_FILES[$filename]['size']; 
    if($filesize_image > 0){ 
     $upload_image = uploadImage($filename, $maxSize, $maxW, $fullPath, $relPath, $colorR, $colorG, $colorB, $maxH); 
     if(is_array($upload_image)){ 
      foreach($upload_image as $key => $value) { 
       if($value == "-ERROR-") { 
        unset($upload_image[$key]); 
       } 
      } 
      $document = array_values($upload_image); 
      for ($x=0; $x<sizeof($document); $x++){ 
       $errorList[] = $document[$x]; 
      } 
      $imgUploaded = false; 
     }else{ 
      $imgUploaded = true; 
     } 
    }else{ 
     $imgUploaded = false; 
     $errorList[] = "File Size Empty"; 
    } 
?> 
<?php 
    if($imgUploaded){ 
     echo '<img src="/eb_admin/images/success.gif" width="16" height="16" border="0" style="margin-bottom: -4px;" /> Success!<br /><img src="'.$upload_image.'" border="0" /><input type="hidden" name="full_story" value="'.$upload_image.'" />'; 
    }else{ 
     echo '<img src="/eb_admin/images/error.gif" width="16" height="16px" border="0" style="margin-bottom: -3px;" /> Error(s) Found: '; 
     foreach($errorList as $value){ 
       echo $value.', '; 
     } 
    } 
?> 

Answer 1

檢查您上傳的圖像是否正確定位。不要只看嵌入的縮略圖，這可能是錯誤的方向。某些圖像也可以在內部設置旋轉標誌，因此它們顯示正確，但實際上是以旋轉格式存儲的。 GD將從原始圖片數據中刪除並忽略這些標誌。

否則，你的代碼看起來沒有什麼明顯的錯誤。不過，我會將getimagesize()調用放在調整大小塊之外，以使其成爲初始錯誤檢查的一部分。現在你假設圖像可以被讀取/加載。如果圖像無法讀取，getimagesize返回false，您可以稍後保存工作。

評論跟進：

的地方在這裏：

if($filesize > $maxlimit){ 
    $errorList[] = "File size is too big."; 
} 

// put it here 
list($width_orig, $height_orig) = getimagesize($_FILES[$fileName]['tmp_name']); 

// additional error check 
if ($width === FALSE) { 
    $errorList[] = "Could not read image"; 
} 

if(count($errorList)<1){ 
    etc... 
    // and when it comes time to actually use the width_orig/height_orig later in this 
    // block, they're already set from the earlier getimagesize() call