show images from database

<?php
// credentials
$db_user="imageuser";
$db_pass="password";
$db_host="localhost";
$db_name="images";

// first I define connection string
$mysqli= mysqli_connect($db_host, $db_user, $db_pass, $db_name);
$sql_query = "SELECT * FROM urls";

$result = mysqli_query($mysqli, $sql_query);
if (mysqli_num_rows($result) > 0) {
    // output data of each row
    while($row = mysqli_fetch_assoc($result)) {
       // first print the title and a line break
       echo $row["title"] . '<br>';
       // show the image url wrapped in an IMG tag
       echo '<img src=' . $row["url"] . '>';
       echo '<hr>';
    }
} else {
    echo "0 results";
}
mysqli_close($mysqli);
?>