passing variables from one page to another

I'm trying to pass a variable from one page to another when someone clicks on a link. Here is what the link code looks like:



On the recieving page, viewvuln.php, the variable id is empty. It is never set to whatever $vulnID is. I don't know what I'm doing wrong. I'm using the latest version of PHP and Apach 2.0. Any help is appreciated. Thanks.

I would do like this:

I've tried that and it still doesn't work. I tried doing the example in Kevin Yank's book, Build Your Own Database Driven Website Using PHP & MySQL. I only have the first 4 chapters, but he has a really good example. It's on page 26 in the .pdf version. You create a HTML file called welcome.html that has:

<a href="welcome.php?name=Kevin"> Hi, I'm Kevin! </a>

in it. You create welcome.php with:

<?php
echo( "Welcome to our Web site, $name!" );
?>

It doesn't work for me. I don't know if Apache or PHP is configured correctly. Other PHP pages work fine. I'm kind of lost and stuck at the same time. Thanks for the help though.

echo doesn't use () , print does. echo is just echo "text"; , print is print ("text");

Try accessing the $id variable as$_GET[id] or $_REQUEST[id]

To see if your webserver is running proberly you can run the file

phpinfo.php

I've made an example of what I think you are trying to do. You can unzip the file and run test.php.

It's working on my webserver

Good luck.

R.A.F. - I'm sorry, but your example didn't work. I don't know why and I would like to know why.

CrazyTrain - the $_GET[id] worked great. I'd still like to try and figure out why I have to do it this way, but at least I have it working.

Thank you all for your help.

I had this same problem a while ago. By default the register_globals parameter is set to off in php.ini
Set it to on and your variables get passed using the variable name you defined.

you can use echo like the following

echo "";
echo ("");

it doesnt matter


Mahanri, if you cant run the phpinfo.php file, there is something wrong with your server. Try reading my article to properlly set up your server.

Let me clarify, I can run the phpinfo file just fine. PHP is working and so is Apache 2.0 I was just having problems passing variables in a url. I tried setting register globals to 'on' and it now works. Thank you all for all of your help.

i got a parse error with echo (""); on the newest version of php. oh well whatever

Mahanri,

I would suggest you use the $_POST[] / $_GET[] arrays when making your scripts... It's not a big deal for personal use, but if you plan on using your scripts for public use, it's a safer method than using the variable name itself.

People may tell you differently, but the fact that it's being used industry-wide must mean something!


CrazyTrain,

That's weird, I haven't had any problems using () with echo... in fact, I've been using it from day one, and still have no problems. Weird.

Hey thanks guys. I decided to not turn on register_globals and I was still able to pass my variables just fine. Thanks everyone for all of your help.