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Busy Day.. aka get info from your users in PHP
By maurizio | June 20, 2007
Today I was/am so busy that I don’t have enough time to browse as I’d like, so I’m just posting a simple trick in PHP, just to make all blogger users a bit envy of us who can use PHP on your blog :-)
The trick is very basic. Scroll down this page and you’ll see it on my left bar. At least if you are not coming here directly.
With the help of Otto’s PHP widget plugin, I put some PHP code on a widget.
“What is your code doing” you are probably wondering.. well, my code just read some information from your browser and show them there. What I’m reading right now is only the page who sent you here. For example, if you click a link on UntwistedVortex.com that redirect you here, you will see a text like
Hello visitor from
www.untwistedvortex.com
Nice, isn’t it?
The code is very basic:
<?php
if ($_SERVER['HTTP_REFERER'] != "")
echo 'Hello visitor from <br/>'. $_SERVER['HTTP_REFERER'];
else
echo "Hi there!";
?>
If the HTTP_REFERER variable is empty, I print “Hi there” on the widget, otherwise I print “Hello visitor from” and the url of the previous site. (Note <br/> which is just a newline command in html)
You can read a lot of stuff from the $_SERVER variable; this is just the interesting one. This is surely the same variable that Wordpress reads to create the linking info on the Dashboard.
Topics: Programming | 3 Comments »
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