getimagesize错误

Question

我的上传/裁剪功能几乎是我想要的。除了我不得不刷新我的页面显示上传的图像..然后，当我删除图像使用删除按钮进一步下来我的代码，我得到以下2个错误显示在我的头。除非我刷新页面，否则上传表单不会再显示，那么以下错误消失，直到我再次删除上传的图像。

这是两个错误，然后是带有标记为粗体的getimagesize函数的代码。

Warning: getimagesize(imgs/pic7.jpg) [function.getimagesize]: failed to open stream: No such file or directory in ----- on line 48 

    Warning: getimagesize(imgs/pic7.jpg) [function.getimagesize]: failed to open stream: No such file or directory in ------ 42 

这是标记为粗体两个错误问题的区域 -

$id=$_SESSION['id']; 
$upload_dir = "imgs";    // The directory for the images to be saved in 
$upload_path = $upload_dir."/";    // The path to where the image will be saved 
$large_image_name = "pic".$id.".jpg";  // New name of the large image 
$thumb_image_name = "cropped".$id.".jpg"; 
$max_file = "1148576";      // Approx 1MB 
$max_width = "500";       // Max width allowed for the large image 
$thumb_width = "100";      // Width of thumbnail image 
$thumb_height = "100";      // Height of thumbnail image 

//Image functions 
//You do not need to alter these functions 
function resizeImage($image,$width,$height,$scale) { 
    $newImageWidth = ceil($width * $scale); 
    $newImageHeight = ceil($height * $scale); 
    $newImage = imagecreatetruecolor($newImageWidth,$newImageHeight); 
    $source = imagecreatefromjpeg($image); 
    imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height); 
    imagejpeg($newImage,$image,90); 
    chmod($image, 0777); 
    return $image; 
} 
//You do not need to alter these functions 
function resizeThumbnailImage($thumb_image_name, $image, $width, $height, $start_width, $start_height, $scale){ 
    $newImageWidth = ceil($width * $scale); 
    $newImageHeight = ceil($height * $scale); 
    $newImage = imagecreatetruecolor($newImageWidth,$newImageHeight); 
    $source = imagecreatefromjpeg($image); 
    imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height); 
    imagejpeg($newImage,$thumb_image_name,90); 
    chmod($thumb_image_name, 0777); 
    return $thumb_image_name; 
} 
//You do not need to alter these functions 
function getHeight($image) { 
    **$sizes = getimagesize($image);** 
    $height = $sizes[1]; 
    return $height; 
} 
//You do not need to alter these functions 
function getWidth($image) { 
    **$sizes = getimagesize($image);** 
    $width = $sizes[0]; 
    return $width; 
} 

Answer 1

调用，当然删除图像getimagesize($image)应该给你的错误。在调用getimagesize($image)和file_exists($file_path)函数之前检查文件是否存在。