Changing variable value with form

Sharif

Okay here is the situation:

1.php contains a variable called $abcd = 'pre';

2.php contains a text field that has to be able to change the value of the $abcd variable's value on 1.php. Is that possible? if so how?

Merve

Yes, I'm sure it's possible. Give more detail and show some code and we'll be able to solve the problem.

Sharif

1.php

<?php
$abdc = 'no value yet';
?>

2.php

<?php include('1.php'); ?>
<form action="1.php" method="post">
<input type="text" value="<?php echo $abcd; ?>">
<br><br>
<input type="submit" value="update">
</form>

I want 2.php to be able to change the value of the variable $abcd using the form.

Merve

[man]fwrite[/man] [man]fopen[/man] [man]ftell[/man] [man]rewind[/man] [man]fclose[/man]

Here are the tools.

Sharif

Thank you.

Sharif

Okay I've read up on all those functions, I just can't understand how all that should work.

swr

I don't understand why merve suggested file operations. They don't seem relevant to this problem...

You probably just want this:
include("1.php");
if (isset($POST['abcd'])) $abcd = $POST['abcd'];

That will set $abcd to whatever the user has submitted, or leave it alone if it hasn't been submitted.

Also, you need this:
<input type="text" name="abcd" value="<?php echo $abcd; ?>">

The name="abcd" part is critical.

Sharif

I'm trying to create a really simple news management script. I got all the sql and all that down but I want the news script to be able to be configured easily. I have a form to change all the variables in my config.php file but don't understand how to get the variables to change in config.php file without including that file or even running it. Sort of like how Invision Board lets you change its config settings using a form in the admin panel and it affects conf_global.php

ahundiak

<?php
$abcd='New Value';
$fp = fopen('one.php','w');
fprintf($fp,"<?php\n");
fprintf($fp,"$%s = '%s';\n",'abcd',$abcd);
fprintf($fp,"?>");
fclose($fp);
?>

Be careful about file permissions.
I used the %s because I assume you will want to write multiple variables out.

Sharif

Thanks, does it matter what type of quotes you use?