PHP Image upload problem
<p>I'm having trouble to get the following code to upload large images. It works great with images less than 1000px by 1000px, but breaks on anything bigger. Any help/ideas greatly appreciated. </p>

<p>Note: I have tried increasing the '$memoryNeeded>=10000000' to '7700000000' but still no joy.</p>

<pre><code>if (!$error &amp;&amp; is_uploaded_file($_FILES['galleryFile']['tmp_name'])) {
        $format = strtolower(substr(strrchr($_FILES['galleryFile']['name'],"."),1));            
        $str = strtolower(trim($_FILES['galleryFile']['name']));
        $str = preg_replace('/[^a-z0-9-]/', '-', $str);
        $str = preg_replace('/-+/', "-", $str);    
        $filename=$str.'.'.$format;                
        $uploadGallery=$origFileDir.$filename;
        foreach ($allowedImgFormats as $key =&gt; $value) {
            $value==$format ? $imgFormatOK='1' : NULL;
        }
        $imgFormatOK=='0' ? $error='You are attempting to upload an image with an invalid format!&lt;br /&gt;Please only upload images with ".gif", ".jpg" or ".jpeg" extensions.' : NULL;
        if (!$error &amp;&amp; move_uploaded_file($_FILES['galleryFile']['tmp_name'], $uploadGallery)){ 
            $galleryW='944'; $galleryH='733';                        
            $galleryInfo = getimagesize($uploadGallery);
            $memoryNeeded = Round(($galleryInfo[0] * $galleryInfo[1] * $galleryInfo['bits'] * $galleryInfo['channels'] / 8 + Pow(2, 16)) * 1.65);
            if ($memoryNeeded&gt;=10000000) {
                unlink($uploadGallery); $error='The chosen image is too large to process.&lt;br /&gt;Please upload a smaller image (lower dimensions and/or resolution).';
            } else {
                list($wOrig, $hOrig) = getimagesize($uploadGallery);
                $ratio_orig = $wOrig/$hOrig;
                if ($wOrig &gt; $galleryW) { $galleryW = $galleryH*$ratio_orig; $galleryH = $galleryW/$ratio_orig; } else { $galleryW=$wOrig; $galleryH=$hOrig; }    
                if ($galleryH &gt; $galleryH) { $galleryH = $galleryW*$ratio_orig; $galleryW = $galleryH/$ratio_orig; }
                $galleryP = imagecreatetruecolor($galleryW, $galleryH); 

                switch($format) {
                   case 'gif' : $thisGallery = imagecreatefromgif($uploadGallery); break;
                   case 'jpg' : $thisGallery = imagecreatefromjpeg($uploadGallery); break;
                }
                imagecopyresampled($galleryP, $thisGallery, 0, 0, 0, 0, $galleryW, $galleryH, $wOrig, $hOrig);

                switch($format) {
                   case 'gif' : $createGallery=imagegif($galleryP, $galleryFileDir.$filename, 88); break;
                   case 'jpg' : $createGallery=imagejpeg($galleryP, $galleryFileDir.$filename, 88); break;
                }
                imagedestroy($galleryP); imagedestroy($thisGallery); unlink($uploadGallery);

                if (!$createGallery) {
                     $error='The chosen image failed to transfer correctly.&lt;br /&gt;Please try again, or attempt to upload an alternative image.';
                     file_exists($galleryFileDir.'/'.$filename) ? unlink($galleryFileDir.'/'.$filename) : NULL;
                } else {            
                    $_POST['imagename']=$filename; 
                    mysql_query("INSERT INTO isgallery(imagename, assoc_object) VALUES('".$_POST['imagename']."', '".$_POST['id']."')");                         
                }
            }        
        } else {
            !$error ? $error='The chosen image failed to upload correctly.&lt;br /&gt;Please try again, or attempt to upload an alternative image.' : NULL;
            file_exists($uploadGallery) ? unlink($uploadGallery) : NULL;
        }
    }
</code></pre>
