select data from php sql tables - php

Question

I have a error with my login script. The connection is successful but it does not display a success message when the login is successful. Still displays my dbconn file message.
Any ideas on how to make this work?
dbconn code
<?php
$user = 'root';
$password = 'root';
$db = 'peerwise';
$host = 'localhost';
$port = 8889;
$link = mysqli_init();
$dbconn = mysqli_real_connect($link, $host, $user, $password, $db, $port);
if (!$dbconn){
echo "Not connected to database";
}else{
echo "Successfully connected";
}
?>
login code
<?php
include_once("includes/dbconn.php");
$username = $_POST['username'];
$password = $_POST['password'];
$sql = "SELECT * FROM Users WHERE username = '$username' AND password = '$password'";
$query = mysqli_query($dbconn, $sql) or die(mysqli_error());
$data = mysqli_fetch_array($query);
if ($data['username'] == $username && $data['password'] == $password) {
echo "success";
} else {
echo "errr";
}
?>

Answer 1

Your using the wrong connection object. Rather than variable $dbconn use $link instead in your query calls, so no mysql error will halt execution of your script, from or die(mysqli_error());
Replace with this:
$query = mysqli_query($link, $sql) or die(mysqli_error());

Answer 2

<div class="login-form-1">
<form id="login" class="text-left" method="POST" action="loginprocess.php">
<div class="main-login-form">
<div class="login-group" id="login">
<div class="form-group">
<input type="text" class="form-control" id="lg_username" name="username" placeholder="Username">
</div>
<div class="form-group">
<input type="password" class="form-control" id="lg_password" name="password" placeholder="Password">
</div>
</div>
<button type="submit" class="login-button" onclick="loginFieldCheck()">Login</button>
</div>
<p id="emptyMessage">Username or Password is incorrect</p>
<p class="create-account"><a class="create-account" onclick="register()">Create a account</a></p>
</form>
</div>

Answer 3

Use mysqli_connect for connection:
<?php
$user = 'root';
$password = 'root';
$db = 'test';
$host = 'localhost';
$port = 3306;
$dbconn = mysqli_connect($host, $user, $password, $db,$port);
if (!$dbconn){
echo "Not connected to database";
}else{
echo "Successfully connected";
}
?>