PHP

<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "test";


$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

if ( $_SERVER['REQUEST_METHOD'] === 'POST' )
{
    $postData = file_get_contents('php://input');
}

$sql = "INSERT INTO tabela(naziv)
VALUES ('$postData')";

if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}



$conn->close();
?>