Untitled

<form method="post" action="lookup.php">
   <input type="text" class="form-control" name="imgid" maxlength="3" placeholder="What's the image number?">
</form>

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lookup.php
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<?php
$servername = "localhost";
$username = "user";
$password = "pass";
$dbname = "database";

$id = $_POST["imgid"];

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM pics WHERE id = '$id'";
$result = $conn->query($sql);
    // output data of each row
    while($row = $result->fetch_assoc()) {
       $dir = $row["dir"];
       $likes = $row["likes"];
    }

$conn->close();
?>

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Hentai Rate</title>
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" type="text/css" href="css/pace.css">
    <link rel="stylesheet" type="text/css" href="css/custom.css">
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
  <div class="container-fluid">
  <br/>
  <br/>

    <div class="row">
      <center>
        <h3 class="text-center">Photo #<?php echo $id; ?></h3>
        <img src="<?php echo $dir; ?>" class="img-main">
      </center>
         <br/>
          <div class="panel panel-default col-lg-2 col-lg-push-5">
            <div class="panel-body">
                <p class="text-center">Likes: <?php echo $likes; ?></p>
            </div>
          </div>
    </div>

  </div>
<!-- ##END### -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <script src="js/pace.js"></script>
    <script src="js/custom.js"></script>
  </body>

<!-- <hr style="width: 100%; color: black; height: 1px; background-color: #2b2b2b; border: none;" /> -->
</html>