note 77679 added to function.imagecopyresampled

Here's an improved and corrected version of my fastimagecopyresampled script. Because I typically scale entire images it appears my previous code was not properly tested. In any case, this new script has been thoroughly tested, cleaned up, and enhanced. The code is a little tighter and quality values between 0 and 1 will yield a mosaic effect (basically lowering quality below the pervious lowest value of 1). I would still suggest using a quality of 2 to 4 as that's the primary purpose of this script, which is high quality and fast results. Don't be afraid of using a quality value of 1.5 for extreme cases where you have a bunch of very large images from digital cameras (like those 10M pixel cameras theses days) and creating thumbnails in batch mode. Even a quality of 1.5 is a big improvement over imagecopyresized and is ultra-fast. Anyway, enjoy and I hope this is the bug-free last version. <? function fastimagecopyresampled (&$dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h, $quality = 3) { // Plug-and-Play fastimagecopyresampled function replaces much slower imagecopyresampled. // Just include this function and change all "imagecopyresampled" references to "fastimagecopyresampled". // Typically from 30 to 60 times faster when reducing high resolution images down to thumbnail size using the default quality setting. // Author: Tim Eckel - Date: 09/07/07 - Version: 1.1 - Project: FreeRingers.net - Freely distributable - These comments must remain. // // Optional "quality" parameter (defaults is 3). Fractional values are allowed, for example 1.5. Must be greater than zero. // Between 0 and 1 = Fast, but mosaic results, closer to 0 increases the mosaic effect. // 1 = Up to 350 times faster. Poor results, looks very similar to imagecopyresized. // 2 = Up to 95 times faster. Images appear a little sharp, some prefer this over a quality of 3. // 3 = Up to 60 times faster. Will give high quality smooth results very close to imagecopyresampled, just faster. // 4 = Up to 25 times faster. Almost identical to imagecopyresampled for most images. // 5 = No speedup. Just uses imagecopyresampled, no advantage over imagecopyresampled. if (empty($src_image) || empty($dst_image) || $quality <= 0) { return false; } if ($quality < 5 && (($dst_w * $quality) < $src_w || ($dst_h * $quality) < $src_h)) { $temp = imagecreatetruecolor ($dst_w * $quality + 1, $dst_h * $quality + 1); imagecopyresized ($temp, $src_image, 0, 0, $src_x, $src_y, $dst_w * $quality + 1, $dst_h * $quality + 1, $src_w, $src_h); imagecopyresampled ($dst_image, $temp, $dst_x, $dst_y, 0, 0, $dst_w, $dst_h, $dst_w * $quality, $dst_h * $quality); imagedestroy ($temp); } else imagecopyresampled ($dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h); return true; } ?> ---- Server IP: 208.69.120.35 Probable Submitter: 72.240.221.30 ---- Manual Page -- http://www.php.net/manual/en/function.imagecopyresampled.php Edit -- https://master.php.net/note/edit/77679 Del: integrated -- https://master.php.net/note/delete/77679/integrated Del: useless -- https://master.php.net/note/delete/77679/useless Del: bad code -- https://master.php.net/note/delete/77679/bad+code Del: spam -- https://master.php.net/note/delete/77679/spam Del: non-english -- https://master.php.net/note/delete/77679/non-english Del: in docs -- https://master.php.net/note/delete/77679/in+docs Del: other reasons-- https://master.php.net/note/delete/77679 Reject -- https://master.php.net/note/reject/77679 Search -- https://master.php.net/manage/user-notes.php