PHP str_replace deletes file content

Question

I'm making a simple setup form where you are asked to enter your database credentials which are stored in another PHP file but when the user submits it the contents in the database credentials file are deleted and the file is just empty. I have tried debugging my code but still can't figure out what is causing the problem.

My database credentials file:

<?php
define("DATABASE_HOST", "{DB_HOST}");
define("DATABASE_USER", "{DB_USER}");
define("DATABASE_PASSWORD", "{DB_PASSWORD}");
define("DATABASE_DATABASE", "{DB_NAME}");

My code:

    $databasehost = $_POST['databasehost'];
    $databaseuser = $_POST['databaseuser'];
    $databasepassword = $_POST['databasepassword'];
    $databasename = $_POST['databasename'];
    $searchF  = array('{DB_HOST}','{DB_USER}','{DB_PASSWORD}','{DB_NAME}');
    $replaceW = array($databasehost,  $databaseuser,     $databasepassword,     $databasename);

    $fh = fopen("../static/database.php", 'w');
    $file = file_get_contents('../static/database.php');
    $file = str_replace($searchF, $replaceW, $file);
    fwrite($fh, $file);
    fclose($fh, $file);

Thanks, Nimetu.

Nigel Ren · Accepted Answer · 2021-06-27 15:55:49Z

1

You read the file with the call

$file = file_get_contents('../static/database.php');

after you have opened the file using w. Opening it for write will automatically blank the file. So change the order to

$file = file_get_contents('../static/database.php');
$fh = fopen("../static/database.php", 'w');

answered Jun 27, 2021 at 15:55

Nigel Ren

57.3k11 gold badges49 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP str_replace deletes file content

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related