just a question

[Henri]

you know when there's a script that does more than 1 action by using only one file? the url looks kinda like: http://site.com/file.php?action=echo

I know that when theres a "?" sign, it means that the following field (action in this case) becomes a variable and after the "=" is the value of it. but how would having a variable get you to do a different action?

take this example:

I just download an upload script. It contains 2 files, the first is config.php wich has misc. variables and their values and the second is upload.php. when you click on "Upload" on the form, the url becomes upload.php?upload=doupload and it acts as a "different page".

can someone explain to me how this function is used and what it is?

thank you

[searain]

in your php code, you will have switch case statments or if elseif else statment

<?php
if ($action=="download")
{
//download action codes
....
}
elseif ($action=="update")
{
//update action codes
...
}
else
{
//default codes
...
}

?>

i prefer to put these three actions in different pages instead of using this approach.

[dannys]

Quite simple - action is a variable, the script tests to see what the value is and processes the appropriate code

Example:

isset($_REQUEST['action']) ? $action=$_REQUEST['action'] : $action="";
isset($_REQUEST['id']) ? $id=$_REQUEST['id'] : $id="";

switch($action)
{
	case 'add':
		newArticle();
		break;
	case 'edit':
		editArticle($id);
		break;
	case 'delete':
		delArticle($id);
		break;
	default:
		viewArticle($id);
}

So, various functions are executed depending on what the action was. In this example, if there is no action then viewArticle() is run.

[Henri]

but...

<form action="what would go here?" method="post">
<blah>
<input type="submit" value="upload">
</form>

[undertow]

What you'd do is use a hidden form variable like so:

<form method="post" action="myscript.php">
<input type="hidden" name="action" value="myaction">
<!-- rest of form -->
</form>

Note that the name of the hidden form value is action, just like the name action in myscript.php?action=myaction.

[theslinky]

Or instead of a hidden button, you can just give the submit button a name:

<form action="myscript.php" method=post>

<input type=submit name="action" value="Upload">

</form>

in your PHP:

<?php

if(isset($_POST['action'])) {
// upload was clicked... upload file
}
else {
// show the form
}

?>

[Henri]

okay, thanx a lot guys