Select option from dropdown menu with PHP and mySql



PHP Snippet 1:

 <?php

 echo '<tr>
        <td bgcolor="#CCCCCC">&nbsp;Course Name</td>
        <td bgcolor="#dfdfdf">&nbsp;';

        mysql_select_db($database_conn, $conn);
        $query_RsCourse = "SELECT * FROM tbl_course ORDER BY courseid DESC";
        $RsCourse = mysql_query($query_RsCourse, $conn) or die(mysql_error());
        $totalRows_RsCourse = mysql_num_rows($RsCourse);
        if($totalRows_RsCourse)
        {
        echo '<select name="courseid"><option value="" SELECTED>Selected Course</option>';
            $count=0;

            while ($row = mysql_fetch_array($RsCourse, MYSQL_ASSOC))
            {
            $count++;
            echo '<option value="'.$row['courseid'].'">'.$row['courseid'].'</option>';
            }
            echo '</select>';
        }
        else
        {
        echo 'No courses to show yet.'; // no rows in tbl_course
        }
        echo '</td>
            </tr>';

?>

PHP Snippet 2:

<?php

 echo '<tr>
        <td bgcolor="#CCCCCC">&nbsp;Course Name</td>
        <td bgcolor="#dfdfdf">&nbsp;';

        mysql_select_db($database_conn, $conn);
        $query_RsCourse = "SELECT * FROM tbl_course ORDER BY courseid DESC";
        $RsCourse = mysql_query($query_RsCourse, $conn) or die(mysql_error());
        $totalRows_RsCourse = mysql_num_rows($RsCourse);


        echo '<select name="courseid"><option value="" SELECTED>Selected Course</option>';
            $count=0;

            while ($row = mysql_fetch_array($RsCourse, MYSQL_ASSOC))
            {
            $count++;
            echo '<option value="'.$row['courseid'].'">'.$row['courseid'].'</option>';
            }
            echo '</select></td>
            </tr>';

?>

PHP Snippet 3:

    <?php
      mysql_select_db($database_conn, $conn);
      $query_RsCourse = "SELECT * FROM tbl_course ORDER BY courseid DESC";
      $RsCourse = mysql_query($query_RsCourse, $conn) or die(mysql_error());
      $coursesHtml = "";
      while ( $row = mysql_fetch_array($RsCourse, MYSQL_ASSOC)) {
        $coursesHtml .= "<option value='{$row["courseid"]}'>{$row["coursename"]}</option>";
      }
     ?>

    <tr>
    <td bgcolor="#CCCCCC">Course Name</td>
    <td bgcolor="#dfdfdf">
    <select name="courseid">
    <option value="" SELECTED>Selected Course</option>      
    <?= $coursesHtml  ?>
    </select>
    </td>
    </tr>