PHP Error "mysqli::mysqli(): (HY000/2002)" [duplicate] - php

Question

This question already has answers here:
mysqli::mysqli(): (HY000/2002): Can't connect to local MySQL server through socket 'MySQL' (2)
(5 answers)
Closed 3 years ago.
I'm having a problem running php code. The error only appears for this php file, other simple ones work fine. I'm using xampp. apache and mysql running green.
<?php
$username = filter_input(INPUT_POST, 'username');
$password = filter_input(INPUT_POST, 'password');
if (!empty($username)){
if (!empty($password)){
$host = "localhost";
$dbusername = "root";
$dbpassword = "";
$dbname = "test";
// Create connection
$conn = new mysqli ($host, $dbusername, $dbpassword, $dbname);
if (mysqli_connect_error()){
die('Connect Error ('. mysqli_connect_errno() .') '. mysqli_connect_error());
}
else{
$sql = "INSERT INTO account (username, password)
values ('$username','$password')";
if ($conn->query($sql)){
echo "New record is inserted sucessfully";
}
else{
echo "Error: ". $sql ." ". $conn->error;
}
$conn->close();
}
}
else{
echo "Password should not be empty";
die();
}
}
else{
echo "Username should not be empty";
die();
}
?>

Answer 1

Finally got the solution to this problem, I'm sharing it because I can't find a solution anywhere else. The $host should be linked to "127.0.0.1" but for an unknown reason my host only worked when it was "127.0.0.1:3307" or the name of your port for mysql at the end, don't forget the ":". PS I changed my db connection back to using the procedural way despite what the Ashu said and it worked.

Answer 2

When you are using Object-oriented mysqli connection then you have to use all Object-oriented method.
In below code you used procedural way:
if (mysqli_connect_error)
{
die('Connect Error ('. mysqli_connect_errno.') '. mysqli_connect_error);
}
Replace with :
if ($conn->connect_error)
{
die('Connect Error ('. $conn->connect_errno.') '. $conn->connect_error);
}
Use 127.0.0.1 instead of localhost