[04-Nov-2018 15:21:52 UTC] PHP Warning:  mysqli_connect(): (HY000/1045):
Access denied for user 'freeload_retain'@'vps28004.inmotionhosting.com'
(using password: NO) in /home/freeloadboard/public_html/insert.php on
line 7
[04-Nov-2018 15:21:52 UTC] PHP Warning:  mysqli_select_db() expects
parameter 1
to be mysqli, boolean given in /home/freeloadboard/public_html/insert.php
on line 21
[04-Nov-2018 15:21:52 UTC] PHP Warning:  mysqli_query() expects parameter
1 to be mysqli, boolean given in
/home/freeloadboard/public_html/insert.php on line 45

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$con = mysqli_connect('##.##.###.##','freeload_retain','');

if(!$con)
{
    echo "Not Connected to Server. ";
}
if(!mysqli_select_db($con, 'freeload_retain'))
{
    echo "Database Not Selected. ";
}

$Companyname = $_POST['companyname'];
$Username = $_POST['username'];
$Password = $_POST['password'];
$Email = $_POST['email'];

$sql = "INSERT INTO clients (companyname, username, password, email)
VALUES ('$Companyname', '$Username', '$Password', '$Email')";

if(!mysqli_query($con, $sql))
{
    echo "Not Inserted. ";
}
else
{
    echo "Inserted. ";
}
?>

// ... Set your database connection variables

/*
 * Create the database connection, notice the
 * usage of mysqli instead of mysql
 */
$connect = new mysqli($host, $user, $password, $database);

/*
 * The query, notice the usage of a question mark
 * on the place of the variables to be inserted
 */
$sql = "INSERT INTO client (cname, tname, pname, ename) VALUES (?, ?, ?, ?)";

// Prepare the query using $connect->prepare()
$stmt = $connect->prepare($sql);

// Check if the query was prepared
if(!$stmt) {
  // ... Handle your error
}

// Get $_POST variables
$companyname = $_POST['companyname'];
$username = $_POST['username'];
$password = $_POST['password'];
$email = $_POST['email'];

if(!$stmt->bind_param('ssss', $companyname, $username, $password, $email)) {
  // ... Handle your error
}

if(!$stmt->execute()) {
  // ... Handle your error
} else {
  echo 'Record inserted.';
}

function hashPassword($password) {
  return password_hash($password, PASSWORD_DEFAULT);
}

function verifyPassword($password, $hash) {
  return password_verify($password, $hash);
}