changing config.php via php page

[roadrunner]

Ok so im trying to write to my config.php from admin/index.php

Im managing to do this, BUT it erases everything and just writes to the php file what i asked.
I want it to alter the string not delete the lot lolz

Example

My config file looks like this ( or some of it anyway)

<?php

// Latest DVD

// Movie 1

$l1 = "X-MAN";
$l2 = "movie1.jpg";
$l3 = "";


// Movie 2

$l12 = "X-MAN";
$l22 = "movie2.jpg";
$l32 = "Hello World!";

// Movie 3

$l13 = "X-MAN";
$l23 = "movie3.jpg";
$l33 = "";

My admin/index.php looks like this

$string = '<?php 
$l13 = "'. $_POST["l13"]. '";

?>';
 
$fp = FOPEN("config.php", "w");
FWRITE($fp, $string);
FCLOSE($fp);
 
}
 
?>
 
<form action="" method="post" name="install" id="install">
  <p>
    <input name="l13" type="text" id="l13" value=""> 
    l13 text
</p>
   <p>
    <input type="submit" name="Submit" value="Install">
  </p>
</form>

And the result looks like this AND ONLY THIS all other has gone

<?php 
$l13 = "pleasework";

?>

So its writing ok but i dont want it to write a new file just update the $l13 output


Help please

Cheers
RR

roadrunner Reviewed by roadrunner on 16th Sep 2011. changing config.php via php page Ok so im trying to write to my config.php from admin/index.php Im managing to do this, BUT it erases everything and just writes to the php file what i asked. I want it to alter the string not delete the lot lolz Example My config file looks like this ( or some of it anyway) <?php Rating: 5

[Robin H]

Seems like you're better of using a database.

[Gavo]

I think the 'w' creates a new file but you want to append to the file, google it.


Like Robin H said, use a database.

[ajinkya9]

I think you need to open the file in append mode. See if this works.

                       $string = '<?php  
$l13 = "'. $_POST["l13"]. '"; 

?>'; 
  
$fp = FOPEN("config.php", "a"); 
FWRITE($fp, $string); 
FCLOSE($fp); 
  
} 
  
?> 
  
<form action="" method="post" name="install" id="install"> 
  <p> 
    <input name="l13" type="text" id="l13" value="">  
    l13 text 
</p> 
   <p> 
    <input type="submit" name="Submit" value="Install"> 
  </p> 
</form>

EDIT: I just replaced 'w' with 'a'
I am just guessing. I have no idea if php has an append mode.

[soft2050]

I think you need to open the file in append mode. See if this works.

                       $string = '<?php  
$l13 = "'. $_POST["l13"]. '"; 

?>'; 
  
$fp = FOPEN("config.php", "a"); 
FWRITE($fp, $string); 
FCLOSE($fp); 
  
} 
  
?> 
  
<form action="" method="post" name="install" id="install"> 
  <p> 
    <input name="l13" type="text" id="l13" value="">  
    l13 text 
</p> 
   <p> 
    <input type="submit" name="Submit" value="Install"> 
  </p> 
</form>

EDIT: I just replaced 'w' with 'a'
I am just guessing. I have no idea if php has an append mode.

Expand

The php do have append mode but it is not used for this purpose

------------------------------------------------------

Either use what gavo said

Or Other possible ways:

1.
Show all the values in the "admin/index.php" from php file when the page loads

If you dont want to show specific values, then you can keep it hidden

Then get all the specific values and save the file

2.
Open the file! Get it all contents using whichever mode you prefer
Then make a regex replacement for the current vars with the new vars
Save the new text

Hope it helps