CODEWITHSUNDEEP
php
Rella
Rella

Reputation: 66935

Can one .PHP file edit another?

So I have a file for constants. I want to let user define them and then edit my .php filr with that global constants (not xml - real PHP file )

With such code for example 

<?php
// Database Constants
define("DB_SERVER", "localhost");
define("DB_USER", "root");
define("DB_PASS", "000000");
define("DB_NAME", "cms");
?>

How to edit this .php file from another PHP file? Is it possible?

Btw in future I want to implement not only constants redefining but some smart code that will be able to modify itself.

If someone can, please show me a function to change word "localhost" in my file...

Upvotes: 3

Views: 7002

Answers (8)

Janus Troelsen
Janus Troelsen

Reputation: 21270

if you are designing your own solution you should refrain from using metaprogramming (check wikipedia) for configuration purposes.

php has a built-in ini-file parser you can use. when you've only got key-value pairs that is sufficient.

writing:

<?php
file_put_contents("settings.ini","[auth]
DB_SERVER=".DB_SERVER."
DB_USER=".DB_USER."
DB_PASS=".DB_PASS."
DB_NAME=".DB_NAME."
");
?>

reading:

<?php
$auth = parse_ini_file("settings.ini");
foreach ($auth as $k => $v) {
define($k,$v);
}
?>

Upvotes: 2

Preben
Preben

Reputation: 132

FILE_TO_REPLACE_IN.php:

<?php
define("DB_SERVER", "{DB_SERVER}");
define("DB_USER", "{DB_USER}");
define("DB_PASS", "{DB_PASS}");
define("DB_NAME", "{DB_NAME}");

SCRIPT_TO_CHANGE_WITH.php:

<?php

$searchF  = array('{DB_SERVER}','{DB_USER}','{DB_PASS}','{DB_NAME}');
$replaceW = array('localhost',  'user',     'pass',     'db');

$fh = fopen("FILE_TO_REPLACE_IN.php", 'w');
$file = file_get_contents($fh);
$file = str_replace($searchF, $replaceW, $file);
fwrite($fh, $file);

... or something like that.

Upvotes: 6

smentek
smentek

Reputation: 2884

Your can write program that edit any file including php file.

BTW. Be carefull! If you show your program how to modify itself it may do it over and over very fast, and finally start killing people like in matrix or terminator movies...

Upvotes: 7

erenon
erenon

Reputation: 19118

Take a look at Zend's CodeGenerator module. Using the reflection api you can create files and classes programatically.

Upvotes: 2

Patrick Desjardins
Patrick Desjardins

Reputation: 140753

You can open the file

$lines = file('myConstants.php');

Edit the content and than save it back

$myFile = 'myConstants.php'
$fh = fopen($myFile, 'w') or die("can't open file");
fwrite($fh, 'DATA HERE');
fclose($fh);

Upvotes: 0

Pekka
Pekka

Reputation: 449395

Using fopen() fwrite() and consorts you can edit any kind of file, including php ones.

Upvotes: 0

confiq
confiq

Reputation: 2918

it is possible... But you will need basic PHP skills.

Use fopen or file_put_contents. Easiest way is to write whole PHP file from scratch...

Upvotes: 0

Sarfraz
Sarfraz

Reputation: 382666

Not talking about security, one simple way is that you can read the php file using reading functions like file_get_contents and once you have the contents, you should show them in some textarea where your users could edit it. Once they edit it and submit the form, you should update the info.

Upvotes: 0

Related Questions