1--TEST-- 2Bug #73281 (imagescale(…, IMG_BILINEAR_FIXED) can cause black border) 3--EXTENSIONS-- 4gd 5--SKIPIF-- 6<?php 7if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.3', '<=')) die('skip upstream fix not yet released'); 8?> 9--FILE-- 10<?php 11$coordinates = [[0, 0], [0, 199], [199, 199], [199, 0]]; 12 13$src = imagecreatetruecolor(100, 100); 14$white = imagecolorallocate($src, 255, 255, 255); 15imagefilledrectangle($src, 0,0, 99,99, $white); 16$dst = imagescale($src, 200, 200, IMG_BILINEAR_FIXED); 17echo "truecolor source\n"; 18foreach ($coordinates as $coordinate) { 19 list($x, $y) = $coordinate; 20 printf("%3d, %3d: %x\n", $x, $y, imagecolorat($dst, $x, $y)); 21} 22 23$src = imagecreate(100, 100); 24$white = imagecolorallocate($src, 255, 255, 255); 25imagefilledrectangle($src, 0,0, 99,99, $white); 26$dst = imagescale($src, 200, 200, IMG_BILINEAR_FIXED); 27echo "\npalette source\n"; 28foreach ($coordinates as $coordinate) { 29 list($x, $y) = $coordinate; 30 printf("%3d, %3d: %x\n", $x, $y, imagecolorat($dst, $x, $y)); 31} 32?> 33--EXPECT-- 34truecolor source 35 0, 0: ffffff 36 0, 199: ffffff 37199, 199: ffffff 38199, 0: ffffff 39 40palette source 41 0, 0: ffffff 42 0, 199: ffffff 43199, 199: ffffff 44199, 0: ffffff 45