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Php header...

Posted on 2011-02-27
Last Modified: 2012-05-11
Any ideas why it will not accept my variable as variable. It thinks it is a string value.

// The link is variable depending on the page.
$txnlink = http://www.google.com;

header('Refresh: 4; URL =$txnlink');

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Question by:blink10
  • 2
LVL 16

Expert Comment

ID: 34990948
// The link is variable depending on the page.
$txnlink = "http://www.google.com";

header('Refresh: 4; URL =$txnlink');

Accepted Solution

LAMASE earned 500 total points
ID: 34991019
You are using single quotes
header('Refresh: 4; URL =$txnlink');

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for have the variable parsed you should use double quotes,
header("Refresh: 4; URL =$txnlink");

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or string concatenation
header('Refresh: 4; URL ='.$txnlink);

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Expert Comment

ID: 34991066
Ah, and you use quotes in the other string, too

$txnlink = "http://www.google.com";

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LVL 109

Expert Comment

by:Ray Paseur
ID: 34991752
Here is the man page about string definitions.  You really want to read this and understand the syntax completely.

Here is the man page about the header() function. Whenever you are not 100% sure what a PHP function does, you can find the function documentation online.  Take note of the very common error about the use of header() after browser output has already occurred.  Even invisible whitespace can cause problems for your script.

It looks like you mean to cause the client browser to refresh and redirect to Google after 4 seconds.  You can do this, of course, but from a UX standpoint, I think I would ask myself if this is really a good thing for the client.  What will they see on the screen for 4 seconds?  Is 4 seconds a sensible length of time to display this information?  What can a client do with the information that will disappear after 4 seconds?  You might want to ask yourself, is it really necessary to display this at all?

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