note 54155 added to function.imagecreatetruecolor

If you want a simple way to mirror images, use the function I've included below. <?php function image_mirror ($input_image_resource) { $width = imagesx ( $input_image_resource ); $height = imagesy ( $input_image_resource ); $output_image_resource = imagecreatetruecolor ( $width, $height ); $y = 1; while ( $y < $height ) { for ( $i = 1; $i <= $width; $i++ ) imagesetpixel ( $output_image_resource, $i, $y, imagecolorat ( $input_image_resource, ( $i ), ( $height - $y ) ) ); $y = $y + 1; } return $output_image_resource; } ?> Example Usage: <?php // A good use of this is when a user uploads a TGA file, // on the completion screen show the image and have a link // that asks if the image appears mirrored, and if so // that link will execute these commands below. // I suggest checking $HTTP_REFERER for security. // $_GET['file'] in this case would be something along the lines // of johndoe-img0001 (Basename is necessary to prevent // abuse of this script!) if ( isset( $_GET['file'] ) ) { $filename = "./" . basename ( $_GET['file'] ) . ".jpg"; // Making the image resource that needs to be mirrored // Taking it from a previously exported to JPEG file. $output_resource_image = image_mirror ( imagecreatefromjpeg ( $filename ) ); if ( imagejpeg ( $output_resource_image, $filename, 75 ) ) echo "Image resaved successfully"; else echo "Image couldn't be written over (Check permissions)!"; } ?> ---- Manual Page -- http://www.php.net/manual/en/function.imagecreatetruecolor.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+54155 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+54155&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+54155&report=yes Search -- http://master.php.net/manage/user-notes.php