Php displaying username /username

Question

I just wanted to know if i can display my logged in username such as http://website.com/username /username would be the username and to display the username on profile.php how can i display that in a echo? or variable here is my ht accesses below if needed

RewriteEngine On
RewriteRule ^([a-zA-Z0-9_-]+)$ profile.php?user=$1
RewriteRule ^([a-zA-Z0-9_-]+)/$ profile.php?user=$1
RewriteRule ^([a-zA-Z0-9_-]+)$ profile.php?user=$1

Even if you get this working, This should NOT be used to manage user sessions. Seriously. — Rápli András, Sep 25 '13 at 13:26
Side note: only one RewriteRule is needed: `RewriteRule ^([A-Za-z0-9_-]+)/?$ profile.php?user=$1 [L]` — Michael Berkowski, Sep 25 '13 at 13:27

Joran Den Houting · Answer 1 · 2013-11-01T12:04:48.973

2

<?php
if(isset($_GET['user'])) {
    echo $_GET['user'];
}
?>

or short version:

// Use outside php tags
<?=(isset($_GET['user']) ? $_GET['user'] : "guest")?>

// use inside php tags
echo (isset($_GET['user']) ? $_GET['user'] : "guest");

edited Nov 01 '13 at 12:04

answered Sep 25 '13 at 13:25

Joran Den Houting

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score 1 · Answer 2 · answered Sep 25 '13 at 13:24

1

<?php echo $_GET['user']; ?>

answered Sep 25 '13 at 13:24

John Conde

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Don't trust user data! – Elon Than Sep 25 '13 at 13:24
Of course not. This was just to demonstrate how to get that variable. – John Conde Sep 25 '13 at 13:26

score 0 · Answer 3 · edited Sep 25 '13 at 14:02

0

filter the data you get from the url

<?php 
$user = filter_var($_GET['user'], FILTER_SANITIZE_STRING);

echo $user;
?>

edited Sep 25 '13 at 14:02

Prix

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answered Sep 25 '13 at 13:28

timod

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3

You forgot the $ at echo user ;) – Joran Den Houting Sep 25 '13 at 13:28

score 0 · Answer 4 · answered Sep 25 '13 at 13:29

anything that is in the url with this type: page.php?var1=x&var2=2 can be accessed via the global $_GET array because it's a variable sent by get protocol.

so the var1 and var2 in my example can be found in $_GET['var1'], $_GET['var2']. and in your case if the page is website.com/profile.php?username=SomeUser you can use $_GET['username'].

One last thing, NEVER under any circumstances, use the user input accessed through the global arrays directly in your code, evaluate it, clean it, escape it, what ever you need , then use it.

Php displaying username /username

4 Answers4