php with html tables question

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Hello,
I am a newbie in php but I know well html and css, I have a code that creates php include function to work with html tables instead of frames. I want to ask what kind of code shall I put in navbar.html to change the main page? (eg. in frames there is target=main etc.)

PHP

/* Roddefig's index.php script (generic demo) */

$location=$_GET['location'];
if (empty($location)) {
$location='index';
}

changelocation($location);

function changelocation($location) {
include ('header.html');
echo '<table cols="2" border="0" cellpadding="10" cellspacing="0" align="center" width="100%">';
echo '<tr>';
echo '<td width="224" bgcolor="#0099FF" valign="top">';
include('navbar.html');
echo '</td>';
echo '<td bgcolor="#33CCFF">';
switch ($location) {
    case 'index':
        include ('actualindex.html');
        break;
    case 'tutorials':
        include ('http://www.genericsite.com/tutorials/index.html');
        break;
}
echo '</td></tr></table>';
include ('footer.html');
}

Thank you
Kyriakos

Posted 30-Apr-12 8:36am

Member 3892343

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Mohibur Rashid · Accepted Answer · 2012-04-30T13:20:00

you are using to include function to redirect.

try using header function;
example:

PHP

header('Location: '.location.'.php');

create a function like below:

PHP

function isset_val(&$var,$new)
{
 if(isset($var)==true)
  return $var;

 return $new;
}

now call the function like below:

PHP

$location=isset_val($_GET['location'],'index'); //if $_GET['location'] does not exists then index will be return; $location can also receive 0 length string.

fix rest of the issues