PHP: black image when cropping using php
<p>i set up a scritp that upload an jpeg and then crop it in a thumbnail, but some users experiences a black image, and honestly i dont know what they are uploading, maybe a jpeg with a compresison format not compatible with php libraries??</p>

<p>this is my simple code...eveything works fine when i try with my photos so i  cant undestand why some users have a black image as resulting thumbnail...</p>

<pre><code>$img_r = imagecreatefromjpeg($src); 
$dst_r = ImageCreateTrueColor($targ_w, $targ_h);
imagecopyresampled($dst_r,$img_r,0,0,$x,$y,$targ_w,$targ_h, $w, $h);    
imagejpeg($dst_r, $output_filename, $jpeg_quality);
</code></pre>

<p>UPDATE: i found out the bug: basically it happens when a user try to upload an image that has a filename that ontains spaces %20... so there is something wrong in the way i'm passing the filname from javascriptajax call to a script in php...aargg..so dumb</p>
