[SOLVED] update variables in a .php page with a form

[irkevin]

Hi,

 

I need some help and some advice on how i should proceed with this.

 

Let's say i have config.php with those variables:

 

<?php

$host = "localhost";
$user = "username";
$pass = "pass";
$db = "db_name";

$allow = "no";

?>

 

I will have a form that will list each of those values in a text input. Now, is it possible to update the values with this form? If i have to set $allow = "yes", will it be possible using a form?

 

Please give some advice! I searched this forum but didn't get a clue on how to achieve this!

 

Thanks, any advice is welcome.

Have a nice Day!

[itsallbroken]

Use a form and action to link to the php file that this is in....

 

$host = $_POST['hostname'];

 

hostname = the input name on the form

 

is this what your after?

[irkevin]

Well, but i need to write the file and update whatever value is assign to the variable

 

So if $host = 'somehost', i would like to change it to $host = 'anotherhost' with a form!

[irkevin]

Bump, No one ever tried this?

[patrickmvi]

This sort of thing is done all of the time but I don't think you're being too clear in what you're trying to accomplish.  You probably want to store the form values you're talking about into some session variables for you to access later (I'm assuming) so you'd want to do something like this:

 

<?
if($_POST[action] == "submit")
{
$_SESSION[field] = $_POST[field];
}
?>
<form method="POST">
<input type="hidden" name="action" value="submit">
Field: <input type="text" name="field"><br>
<input type="submit" value="Submit">
</form>

 

Then you could reference $_SESSION[field] throughout any of your pages to get the value of what was submitted via the form.

[waterssaz]

Well, but i need to write the file and update whatever value is assign to the variable

 

Not sure what you mean by write to the file as itallbroken's advice would assign the value from the form to the variable????

 

 

[irkevin]

well the point it,

 

I have a config.php page where some variable are set for the website.

 

If one day i have to change something in this config.php page (example: change $allow = 'no' TO $allow = 'yes'), instead of doing it manually in the file, i would like to do it via a form! Hope that makes sense. lol

 

 

[waterssaz]

no offence, but unless this will in some way benefit your application, sounds like you are making a lot of work for yourself just to change the value of a config variable

[irkevin]

If i have an Admin Backend, it will then be easier and faster to change a configuration instead of doing it manually, then re upload the file! Anyways, i will try to sort things out!

 

Thanks for every suggestion

[waterssaz]

Ok I see where you are going with this now.

What about rewriting the file entirely each time like this

:

<?php 

if (isset($_POST["Submit"])) { 

$string = '<?php  
$dbhost = "'. $_POST["dbhost"]. '"; 
$allow= "'. $_POST["allow"]. '"; 
/// more variables etc passed from form
?>'; 

$fp = fopen("config.php", "w"); 
fwrite($fp, $string); 
fclose($fp); 

} 

?> 

[irkevin]

Yeah, thats what i was going for.. And it's actually working..

 

Thank you so much for this little example!