Hyperlinks with '?id=xxx'

[techmeister]

Hi there:

I have seen in many php driven websites the ability to use an html hyperlink to perform some php process via something like this:

http://localhost/edit.php?id=xx

I\'m guessing that this \'?id=xx\' part directs one to a part in the edit.php script that performs a process that the hyperlink describes. In my case \'edit this entry\' , Where I wish to have dynamically displayed, a form that submits an SQL query to a MySQL DB.

My question is, can someone out there perhaps give me some examples of how this works and wether it\'s possible to use it for the facility I describe.

I would look at the source code of some sites but php script is hidden.

Many thanks.

Russ

[alexh]

hi

you can use this to pass variables
from one call of the script to a second.

the part behind the ? is passed
to your script as $argv[0]

best will be a short code example
for example if you want to pass 2 variables
$a="hello" and $b=12 through the url, you can
do it this way:

produce a link
script.php3?$a=hello;$b=12;

then at the beginning of the next execution
of your script you do something like

parse_str($argv[0]);

and you will have $a and $b set to the
former values.

of course this is just the principle way and
in no way secure or something.

Alex

[Anon]

the ?id=xxx just submits a variable to the script called "id" and the value of xxx.

so you would have to read the value of "id". I've done something like that in my PHP-Newsscript for the Admin-Center. Here the piece of code, where it includes an PHP-File depending on $action that is submited in the url with ?action=XXX .

      if ($action == "main") {
           require('main.php');
           exit;
      } else if ($action == "post") {
           require('post.php');
           exit;
      } else if ($action == "edit") {
           require('newsed.php');
           exit;
      } else if ($action == "kedit") {
           require('kommed.php');
           exit;
      } else if ($action == "user") {
           require('user.php');
           exit;
      } else {
           require('main.php');
           exit;
      }

[[deleted]]

Wow... argv and argc...
...so there are still people who use it in PHP? :-)

[techmeister]

Cheers guys that helped a lot!

Unfortunatley my worst fears have been made apparant - these 'edit' links appear on each entry on a dynamically generated page, where multiple entries occur. This means that php isn't able to figure out - specifically WHICH entry the user wants to update/delete.

I would like to know if it is possible to reconcile the following link:

<a href=\"edit.php?id=edit\">edit entry</a>

• with a particular page entry, generated by php code on the page: edit.php

I do have a unique 'id' field in my DB but not sure how to incorporate it..

Many thanks to you guys who helped out before!

Russ

[baruch]

Basically what you need to do is to have in the first page the generation of the links, the idea is that you list all you want and link it to "edit.php?id=$id" where $id is the unique id of that record (row).

In the edit.php script you verify that you received an id variable with isset($id) and that it is valid (look it up in the table), and then you do whatever editing you are supposed to do.

Hope this helps.

[techmeister]

Excellent!

Many thanks Baruch! It's all go now!

Cheers.

Russ