Here is my code so far

```
    <form method="post" name="search">
      <input type="search" name="k" placeholder="Enter Keywords">
      <input type="submit" value="Search">
    </form>
    <?
$skw = $_POST['k'];
if(isset($_POST['k'])){
$connect = mysql_connect('*', '*', '*')or die('Could not execute command. Please contact a administrator.');
mysql_select_db('*')or die('No database');
$query = "SELECT * FROM *** WHERE items LIKE '%$skw%'";
$result = mysql_query($query)or die(mysql_error());
    echo "<table align=\"left\" border=\"1\" cellpadding=\"5\" cellspacing=\"3\">";
    echo "\"" . $skw . "\"";

        if(empty($result)){echo " Not Found!";}else{

            echo " Found In";

            while($row = mysql_fetch_array($result)){
            echo "<tr><td>";
            echo "<font color=\"#CC0000\">" . $row['tub_id'] . "</font>";
            echo "</td><td>";
            echo $row['items'];
            echo "</td></tr>";

}
echo "</table>";

}}?>

```

How do I highlight the $skw in the result? I have tried using preg\_replace, but i am very new to php and cannot get it to work. I understand that I can use classes to style it.
Thank you for any help.