Including php variable in header()

Question

I'm still learning php and I still haven't figured out when to use ' or ". I'm guessing thats the problem with this code. It redirects me to the right page but the $loc variable isn't carried over.

 <?php header("Location: roomdata.php?loc=$loc"); ?>

on the page that has the header() commaned I also have an include command...

<?php  include 'include/globalscripts.php';  ?>

and in the globalscripts.php is...

<?php if( isset($_GET['loc']))?>

<?php $loc = $_GET["loc"];?>

Add more info like what the $loc is and how you derive it, code looks fine, the problem could be in how you construct $loc — xelber
– xelber, Commented Nov 19, 2012 at 23:27
Read about strings so you will know the difference between single and double quotes. Likely that isn't your issue as that syntax is correct. Maybe $loc isn't in the scope where you run that code. — drew010
– drew010, Commented Nov 19, 2012 at 23:29
@techouse can you define a $_SESSION variable in a link? the reason I ask is because I need it to be defined by where the user clicks on an image map. EX: <area shape="rect" coords="502,583,536,651" alt="D06" href="roomdata.php?loc=D06" /> — user1748235
– user1748235, Commented Nov 19, 2012 at 23:38

David Passmore · Accepted Answer · 2012-11-19 23:29:00Z

1

I would personally use:

<?php
    header('Location: roomdata.php?loc='.$loc);
?>

answered Nov 19, 2012 at 23:29

David Passmore

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1 Comment

Klemen Tusar Over a year ago

in this case you could use single quotes

David Passmore · Accepted Answer · 2012-11-19 23:35:30Z

1

<?php if( isset($_GET['loc']))?>

<?php $loc = $_GET["loc"];?>

TRY

<?php
    if( isset($_GET['loc'])){
        $loc = $_GET["loc"];
    }
?>

edited Nov 19, 2012 at 23:35

David Passmore

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answered Nov 19, 2012 at 23:32

xelber

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2 Comments

Sammitch Over a year ago

Yes, @LifeByte really needs to stop wrapping every line in <?php ?> tags. It is confusing, unnecessary, and will likely introduce extraneous whitespace into the output that will conflict with calls like header().

xelber Over a year ago

yes, and of course do make sure a GET var with the key loc is actually passed :)

Sammitch · Accepted Answer · 2012-11-19 23:28:28Z

0

Your code should work, are you sure $loc is defined at this point?

Regarding ' and ":

$value = "derp";
echo "the value is:\t$value";
//output: the value is:     derp

echo 'the value is:\t$value';
//output: the value is:\t$value

answered Nov 19, 2012 at 23:28

Sammitch

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