changing password script not running, help me?

[muchexie]

I have developed a login system but its failing to allow the user to change password.
Here is my code.
[PHP]
<?
require_once("s ystem_fns.php") ;
session_start() ;
do_html_header( "Changing password");
check_valid_use r();
$new_passwd=($H TTP_POST_VARS['new_passwd']);
$new_passwd2=($ HTTP_POST_VARS['new_passwd2']);
if (!filled_out($H TTP_POST_VARS))
{
echo "You have not filled out the form completely.
Please try again.";
display_user_me nu();
exit;
}
else
{
if ($new_passwd!=$ new_passwd2)
echo "Passwords entered were not the same. Not changed.";
else if (strlen($new_pa sswd)>16 || strlen($new_pas swd)<6)
echo "New password must be between 6 and 16 characters. Try again.";
else
{
// attempt update
if (change_passwor d($valid_user, $old_passwd, $new_passwd))
echo "Password changed.";
else
echo "Password could not be changed.";
}


}
display_user_me nu();
?>
[/PHP]

These are the error messages I'm getting.

Notice: Undefined index: new_passwd in C:\project\test \change_passwd. php on line 6
Notice: Undefined index: new_passwd2 in C:\project\test \change_passwd. php on line 7
These are lines in question.
[PHP]
$new_passwd=($H TTP_POST_VARS['new_passwd']);
$new_passwd2=($ HTTP_POST_VARS['new_passwd2']);
[/PHP]
Please help me.

[xwero]

what is the html code of the form?

[Motoma]

What version of PHP are you using? Have you tried referencing them via $_POST rather than $HTTP_POST_VARS ?

[muchexie]

what is the html code of the form?

Here is the html code

[HTML]
<form method='post' action='change_ passwd.php'>
<table bgcolor=''>
<tr>
<td>Username: </td>
<td><input type='text' name='username' size=16 maxlength=16></td></tr>
<tr>
<td>Old Password:</td>
<td><input type='password' name='passwd'
size=16 maxlength=16></td></tr>
<tr>
<td>New Password <br />(between 6 and 16 chars):</td>
<td valign='top'><i nput type='password' name='new_passw d'
size=16 maxlength=16></td></tr>
<tr>
<td>Confirm password:</td>
<td><input type='password' name='new_passw d2' size=16 maxlength=16></td></tr>
<tr>
<td colspan=2 align='center'>
<input type='submit' value='Change'> </td></tr>
</table></form>
[/HTML]

[muchexie]

What version of PHP are you using? Have you tried referencing them via $_POST rather than $HTTP_POST_VARS ?

I'm using PHP 4.4.4 version.Well I'm going to replace $HTTP_POST_VARS by
$_POST.
Thanks I hope its gonna work.