PHP验证码不显示,请问怎么解决?http://103.246.245.147:83/joyin.php?id=joyin_LIIDSBPOQK_313333GD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')){