[Resolved] passing variables through header ("Location:")

ent_tx

Seems I always end up posting for the simplest questions. I've searched for this, but the answers I found I can't get to work for what I want.

I have 4 php pages:
page1.php - reads search criteria and calls page2.php
<form action="page2.php" method="get">

page2.php - runs query based on search criteria and performs action:
<?
$criteria_1 = $GET['var_1'];
$criteria_2 = $GET['var_2'];

$result = $mysql_query . . .
$num_rows = mysql_num_rows ($result);

if ($num_rows != 1)
{
header ("Location: page3.php");
exit;
}
else // only one record retrieved
{
while ($a_row = mysql_fetch_array($result))
{
$name_1 = $a_row['field_1'];
// same for remaining fields in array
}
header ("Location: page4.php");
}
?>

page3.php - loads fine; not worried about code at this point

page4.php - supposed to display info from query result
<?
$info = $_POST['result'];
echo $info;
echo "some html"
?>

I've tried several ways, and can't seem to get any information to print except the HTML. Can't get $_POST['name_1'] to work, either. Pages 2, 3, & 4 don't have any form tags. I don't think I can use a form method, which is what everybody else seems to do, because it should go to one of two pages, depending upon the results of the if statement. Maybe that's an incorrect assumption.

Hope I didn't take out too much code. Am willing to add to it.

Thanks for any help.

mattr

The GET/POST are passed through the header, so unless you explicitly send them you won't see them either.

You could always do header( "Location: bob.php?param1=1234&param2=12345" );

ent_tx

Thanks for the response. At least now I know I can't do it that way!

I'm a little lost on the suggestion. Are you talking about something like this:
header ("Location: page2.php?result=$result");

or did I completely miss it?

as always, thanks for the help.

mattr

Correct. In page4.php you'll have to change the $POST to either $REQUEST or $_GET (I think).

ent_tx

Thanks for the help. When I tried running your suggestion, all I could get it to print was "Resource" (meaning it wasn't getting an array). I was able to get it to transfer & print one field only, like so:

page2.php:
$a_no = $a_row['field_1'];
header ("Location: page4.php?a_no=$a_no");

page4.php:
$info = $_GET['a_no'];
echo $info;

which would print the info in my query. After thinking about it, I think I would prefer to pass only the primary key from the query and re-query the db on the new page. Might work better with the way I have page3.php set up.

altho I couldn't get my original idea to work, you helped me implement a better one. thanks much!!