
$referer = isset ( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : NULL;
$host = $_SERVER['HTTP_HOST'];
echo '提交过来的地址:'.$referer;
echo '
';
echo '本站域名:'.$host;
echo '
';
echo substr ( $referer,7,strlen ( $host ) );
if ( substr ( $referer,7,strlen ( $host ) ) != $host )
{
echo '非法操作';
}
else
{
echo '正常操作';
}


