Bug #18460: Gd Hangs when Resampling and saving PNG's

From: sramage@fatpipeinternet.com Operating system: FreeBSD PHP version: 4.2.1 PHP Bug Type: GD related Bug description: Gd Hangs when Resampling and saving PNG's This error occurs almost every time, once every 20 times it actually works but most times it hangs. Some times It actually finishes writing the file than it doesn't hang, it just autopmatically comes up with the standard -- Cannot find server or DNS Error -- there is no problem with the DNS it just gives that error when it actually completes the file write. if it does not complete the file write the file size of the created image == 0 and the browser goes into a constant loading cycle, but never loads the page. Stats Apache 1.3.22 GD Version 2.0 or higher JPEG, PNG enabled The following function is usually called within a class, if that matters. it's not a bad piece of thumbnail code, feel free to use it at will. Thanks Steve function CreateThumbnail($input_image,$fixed=true,$width=75,$height=75,$output_image=false){ //echo "$input_image<BR>$output_image <BR><BR>"; if(file_exists($input_image)){ // No Output File? Lets Improvise... if(!$output_image){ $ext=strrev(strtok(strrev($input_image),".")); $core=strrev(strtok("")); $output_image=$core."_thumb.".$ext; } // Snag Image Size if($dimensions = @GetImageSize($input_image)){ if($dimensions[2]==3 || $dimensions[2]==2){ // Set Height to Width Ratio. $ratio = $dimensions[1] / $dimensions[0]; // Set up Thumbnail Dimensions if($fixed){ $new_height = $height; $new_width = $width; $x = 0; $y = 0; }else{ if ($ratio * $width < $height) { // if Height is greater than Width $new_height = $ratio * $width; $new_width = $width; $x = 0; $y = ($height - $new_height) / 2; }else if ((1 / $ratio) * $height < $width) { // if Width is greater than Height $new_width = (1 / $ratio) * $height; $new_height = $height; $x = ($width - $new_width) / 2; $y = 0; }else { // if Width is equal to Height $new_width = $width; $new_height = $height; $x = 0; $y = 0; } } // Load up original image switch($dimensions[2]){ case '3': $image = ImageCreateFromPNG($input_image); break; case '2': $image = ImageCreateFromJPEG($input_image); break; default: $image=false; break; } if($image){ // Create thumbnail in memory $thumb = @ImageCreateTrueColor($width, $height); $bg = @ImageColorAllocate($thumb, 255, 255, 255); @ImageFill($thumb, 0, 0, $bg); // Paste a resized original within the thumb borders @ImageCopyResampled ($thumb, $image, $x, $y, 0, 0, $new_width, $new_height, @ImageSX($image), @ImageSY($image)); // Write Completed Thumbnail to Disk if($dimensions[2]==3){ $return=@ImagePNG($thumb, "$output_image"); }else{ $return=@ImageJpeg($thumb, "$output_image"); } } }else{ $return=false; //$this->error="cannot create thumbnail from specified image type"; } }else{ $return=false; } }else{ $return=false; } return $return; }//end function -- Edit bug report at http://bugs.php.net/?id=18460&edit=1 -- Fixed in CVS: http://bugs.php.net/fix.php?id=18460&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=18460&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=18460&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=18460&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=18460&r=support Expected behavior: http://bugs.php.net/fix.php?id=18460&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=18460&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=18460&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=18460&r=globals