滚动到id PHP功能

I have a form that on submit refreshes the page and shows the errors.I just need it to scroll back to the form.This is the form tag:

<form id='contactus' action='<?php echo $formproc->GetSelfScript(); ?>' method='post' accept-charset='UTF-8'>

This is the function:

function GetSelfScript()
{
    return htmlentities($_SERVER['PHP_SELF']);
}

How do I add the #contact to the function?

Thanks!

You don't need php here. Append the id of the element you want to jump to as an anchor to the action field.

e.g.

<form id="contactUs" action="target.php#contactUs" />

in your case (whatever is appropiate)

<form id='contactus' action='<?php echo $formproc->GetSelfScript(); ?>#contactus' method='post' accept-charset='UTF-8'>

or

function GetSelfScript($anchor = null)
{
    $anchor = $anchor === null ? '' : '#' . $anchor;
    return htmlentities($_SERVER['PHP_SELF']) . '#' . $anchor;
}

and

<form id='contactus' action='<?php echo $formproc->GetSelfScript("contactus"); ?>#contactus' method='post' accept-charset='UTF-8'>