I can't update my MySQLi Database with PHP (no Errors) - php

Question

I can't Update my Database with PHP. I don't get any errors but it doesn't change anything!
Here is my file:
<?php
include_once 'dbh.inc.php';
?>
<?php
$id = $_GET['verId'];
$name = $_GET['verName'];
echo $id;
echo $name;
$sql = "UPDATE allusers SET ver = '1' WHERE idUsers = '$id';";
?>
The variables are defined and work.
Here's the dbh.inc.php file:
<?php
$servername = "localhost";
$dBUsername = "root";
$dBPassword = "";
$dBName = "loginsystem";
$conn = mysqli_connect($servername, $dBUsername, $dBPassword, $dBName);
if (!$conn) {
die("Connection failed: ".msqli_connect_error());
}
?>
Other files that use dbh.inc.php work fine.
Thanks for your help.

Answer 1

You need to execute your SQL, but the way you are using MySQLi is very wrong. Let me show you how to get started with a simple query.
First in your dbh.inc.php (you should name it properly too) you should have the following code:
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$conn = new \mysqli("localhost", "root", "", "loginsystem");
$conn->set_charset('utf8mb4');
Do not use root for connection. Create a valid MySQL user with a proper password.
Then in your main PHP file, you can use it as follows:
<?php
include_once 'dbh.inc.php';
$id = $_GET['verId'];
$name = $_GET['verName'];
echo $id;
echo $name;
// prepare -> bind data -> execute
$stmt = $conn->prepare("UPDATE allusers SET ver='1' WHERE idUsers=?");
$stmt->bind_param('s', $id);
$stmt->execute();
I used here what is called a prepared statement. You can learn more about MySQLi here: https://phpdelusions.net/mysqli_examples/update