Resize image not working with some images.

[nightqueen]

I have the following code in a file that is called using the href= in an <img>.

It works most of the time but a few images don't show up and don't show any errors if I put the full href in the address bar. I can't see any difference in the images that will and won't show.

eg.

image-DSC0001.JPG works and
image-IMG-002.JPG doesn't.

I'm totally stumped.

<?php

if ($src) ImageDestroy($src);
if ($dst) ImageDestroy($dst);

if ($_GET['size'] == "large")
{
if (!$max_width)
$max_width = 550;
if (!$max_height)
$max_height = 530;
}
else
{
if (!$max_width)
$max_width = 150;
if (!$max_height)
$max_height = 100;
}

$size = GetImageSize("/var/www/vhosts/url.com/httpdocs/New Site/Images/Users Gallery/".$_GET["image"])or die("Could not get image size");
$width = $size[0];
$height = $size[1];

$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;

if (($width <= $max_width) && ($height <= $max_height))
{
$tn_width = $width;
$tn_height = $height;
}
elseif (($x_ratio $height) < $max_height)
{
$tn_width = $max_width;
$tn_height = ceil($x_ratio $height);
}
else
{
$tn_width = ceil($y_ratio * $width);
$tn_height = $max_height;
}

$src = ImageCreateFromJpeg("/var/www/vhosts/url.com/httpdocs/New Site/Images/Users Gallery/".$_GET["image"])or die("Could not create from Jpeg");
$dst = ImageCreateTrueColor($tn_width, $tn_height)or die("Could not create new image");
ImageCopyResized($dst, $src, 0,0,0,0, $tn_width, $tn_height, $width, $height)or die("Could not copy resized");

header('Content-type: image/jpg');
imagejpeg($dst, null, 100);
?>

[examancer]

If no error is output this will be especially hard to diagnose. Instead of using GetImageSize() to get the image dimensions, try obtaining the dimensions using ImageX() and ImageY() on the image resource after you open the image to ensure its been opened properly.

You might also need to step through this code by finding an image that breaks it, commenting out most of the code, and uncommenting a piece at a time until you figure out which expression breaks it. This will at least narrow down WHERE its failing, which could be useful in determining WHY its failing.

For whatever reason I have seen GD get fussy about dealing with certain JPGs.