http://103.246.245.147:83/joyin.php?id=joyin_liidsbpoqk_313333
gd库是打开的，请问验证码怎么不显示？
------解决方案--------------------
session_start();
//session_register('safecode');//这个函数已列于废止，使用时会有警告
$type = 'gif';
$width= 60;
$height= 20;
header(content-type: image/.$type);
srand((double)microtime()*1000000);
$_session['safecode'] = $randval = randstr(4,);
if($type!='gif'&&function_exists('imagecreatetruecolor')){