为什么这段代码不起作用？
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body>
<?php
header('Content-type: image/png');
$myImage = imagecreate(200, 100);
$myGray = imagecolorallocate($myImage, 204, 204, 204);
$myBlack = imagecolorallocate($myImage, 0, 0, 0);
imageline($myImage, 15, 35, 120, 60, $myBlack);
imagepng($myImage);
imagedestroy($myImage);
?>
</body>
</html>
我总是得到错误The image cannot be displayed because it contains errors..我已经启用了php_gd2.dll,memory_limit在php.ini中也是128M.如果我删除header('Content-type: image/png');我没有得到错误,但我也没有看到图像.我只看到这个: -
‰PNG ??? IHDR???È???d???ùHíH???PLTEÌÌÌ???Ó33d???MIDATH‰c£ Àx?§” Nf*k²Ã)Ãø?§”•5}À)ÅS†ÚšpJUà”a§²¦œ2ÔŽw<špJ‚Q0 †;?? uTBúŸ????IEND®B,`
php ×1