1--TEST-- 2Bug #47946 (ImageConvolution overwrites background) 3--EXTENSIONS-- 4gd 5--SKIPIF-- 6<?php 7if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<=')) die('skip upstream fix not yet released'); 8if (!(imagetypes() & IMG_PNG)) { 9 die("skip No PNG support"); 10} 11?> 12--FILE-- 13<?php 14function array_flatten($array) 15{ 16 $tempArray = array(); 17 18 foreach ($array as $value) { 19 if (is_array($value)) { 20 $tempArray = array_merge($tempArray, array_flatten($value)); 21 } else { 22 $tempArray[] = $value; 23 } 24 } 25 26 return $tempArray; 27} 28 29function makeFilter($resource, $matrix, $offset = 1.0) 30{ 31 $divisor = array_sum(array_flatten($matrix)); 32 if ($divisor == 0) { 33 $divisor = .01; 34 } 35 return imageconvolution($resource, $matrix, $divisor, $offset); 36} 37 38$edgeMatrix = array(array(1, 0, 1), array(0, 5, 0), array(1, 0, 1)); 39 40$im = imagecreatetruecolor(40, 40); 41imagealphablending($im, false); 42imagefilledrectangle($im, 0, 0, 39, 39, 0x7fffffff); 43imagefilledellipse($im, 19, 19, 20, 20, 0x00ff00); 44imagesavealpha($im, true); 45makeFilter($im, $edgeMatrix); 46 47require_once __DIR__ . '/func.inc'; 48test_image_equals_file(__DIR__ . '/bug47946_exp.png', $im); 49?> 50--EXPECT-- 51The images are equal. 52
