Doc #71423 [Nab]: Misrepresentation

Edit report at https://bugs.php.net/bug.php?id=71423&edit=1 ID: 71423 Updated by: requinix@php.net Reported by: xxalfa at gmail dot com Summary: Misrepresentation Status: Not a bug Type: Documentation Problem Package: GD related Operating System: Mac OS X 10.11.2 PHP Version: 7.0.2 Block user comment: N Private report: N New Comment: I don't really know. But https://en.wikipedia.org/wiki/Image_scaling looks interesting. Previous Comments: ------------------------------------------------------------------------ [2016-01-21 05:04:33] xxalfa at gmail dot com The other function (imagecopyresampled), then I'll probably have to use unfortunately. That an interpolation algorithm is used, it is now clear to me, only in what scenarios is something used? ------------------------------------------------------------------------ [2016-01-20 18:48:21] requinix@php.net > BLURRED Then the default interpolation method (fixed-point bilinear) is not suitable for you. If you don't need control over interpolation then imagecopyresampled() is generally the best resizing method. > THE IMAGE IS SHARP NOW, BUT HAS A BLACK BORDER ON THE LEFT AND BELOW. The $mode is not a bitmask. IMG_BILINEAR_FIXED | IMG_BICUBIC_FIXED => 3 | 5 => 7 which corresponds to the (undocumented) "box" method. Use one constant or the other, not both. ------------------------------------------------------------------------ [2016-01-20 17:56:50] xxalfa at gmail dot com Description: ------------ --- From manual page: http://www.php.net/function.imagescale --- I would like to use this function, just do not do what I expect. Test script: --------------- $old_width = imagesx( $image_resource ); $old_height = imagesy( $image_resource ); $percent = 10; $new_width = $width * $percent; $new_height = $height * $percent; // BLURRED $new_image_resource = imagescale( $image_resource, $new_width, $new_height ); // THE IMAGE IS SHARP NOW, BUT HAS A BLACK BORDER ON THE LEFT AND BELOW. $new_image_resource = imagescale( $image_resource, $new_width, $new_height, IMG_BILINEAR_FIXED | IMG_BICUBIC_FIXED ); // CREATES A CLEAN MAGNIFICATION. $new_image_resource = imagecreatetruecolor( $new_width, $new_height ); imagecopyresized( $new_image_resource, $image_resource, 0, 0, 0, 0, $new_width, $new_height, $old_width, $old_height ); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71423&edit=1