Question

php函数imagecreatetruecolor()问题请教？

//原代码$canvas = imagecreatetruecolor(200,200);$backgroundColor = imagecolorallocate($canvas,255,0,0);imagefill($canvas,0,0,$backgroundColor);header('Content-Type:image/png');imagepng($canvas);imagedestroy($canvas);为什么浏览器输出没有红色区域,全屏黑屏

Answer 1

libpng的问题，看看错误日志，nginx和php的，GD重新编一下