update wordpress url

update.php

<?php

$link = mysqli_connect("localhost", "user", "password", "database");
if($link === false){
    die("ERROR: Could not connect. " . mysqli_connect_error());
}
$sql = "UPDATE wp_options SET option_value = replace(option_value, 'http://oldserver.com.br', 'http://newserver.com.br') WHERE option_name = 'home' OR option_name = 'siteurl';";
if(mysqli_query($link, $sql)){
    echo "feito.";
} else {
    echo "ERROR: $sql. " . mysqli_error($link);
}
mysqli_close($link);