Can anyone help me out with this one? I'm currently trying to add a management section to a website for a friend. Neither of us coded it, so I don't really get how this guy who DID code it has done it.
I have never really used drop downs, arrays and PHP together, so I kinda don't know what i'm doing, except I could copy his code.. But then it's wrong!

All I need to do, is make a new drop down, but with management only, just for the admin. No one else. Here's the code he has for the page:

PHP Code:

<?php

require('inc/Predefined.php');
require('inc/Mysql.php');
require('inc/User.php');
require('parts/m_start.php');
require('parts/m_menu.html');





// remove memmbership
if ($_POST['user_id'] && $_POST['activity'])
{
    if ($_POST['activity'] === 'active')
    {
        $sql = "UPDATE s_teams SET
                active=0
                WHERE user_id=". intval($_POST['user_id']);
        $sdb->get_query($sql);

    }
    elseif ($_POST['activity'] === 'inactive')
    {
        $sql = "UPDATE s_teams SET
                active=1
                WHERE user_id=". intval($_POST['user_id']);
        $sdb->get_query($sql);

    }
}


if ($_POST['user_id'] && isset($_POST['rankID']) && $_POST['gameID'])
{
    $sql = "UPDATE s_teams SET
            rankID=". (intval($_POST['rankID']) ? intval($_POST['rankID']) : 'NULL') ."
            WHERE user_id=". intval($_POST['user_id']) ."
            AND gameID=". intval($_POST['gameID']);
    $sdb->get_query($sql);
}

?>
<div id="inner_header">Roster: <?php echo $row['name'] ?></div>
<div class="tab_cell">
<table class="stats" cellpadding="0" cellspacing="0">
<thead>
<tr>
    <td width="250">Name</td>
    <td>Status</td>
    <td>Rank</td>
    <td>Profile</td>
</tr>
</thead>
<tbody>

    <?php


$sql = "SELECT gameID,name FROM s_games
        ORDER BY name";
$resOut = $sdb->get_query($sql);

while ($rowOut = mysql_fetch_assoc($resOut))
{
    echo '<tr><td colspan="4" align="center">- '. $rowOut['name'] ." -</td></tr>\n\n";

    // finn all users
    $sql = "SELECT st.user_id, st.active, st.rankID, fu.username FROM
            s_teams st INNER JOIN forum_users fu USING(user_id)
            WHERE st.gameID={$rowOut['gameID']}
            ORDER BY fu.username";

    $res = $sdb->get_query($sql);

    $sql = "SELECT * FROM s_ranks
            WHERE gameID=". intval($rowOut['gameID']) ."
            ORDER BY name";
    $res2 = $sdb->get_query($sql);
    $ranks = array(0 => 'no rank');
    while ($row = mysql_fetch_assoc($res2))
    {
        $ranks[intval($row['rankID'])] = $row['name'];
    }



    while ($row = mysql_fetch_assoc($res))
    {
    ?>
    <tr class="tr1" onmouseover="this.className='tr2'" onmouseout="this.className='tr1'">

    <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post" style="display:inline">
    <td>
    <?php echo $row['username'] ?>
     </td>
     <input type="hidden" name="user_id" value="<?php echo $row['user_id'] ?>">
     <td>
     <input type="submit" class="black_box" name="activity" value="<?php echo ($row['active'] ? 'active' : 'inactive') ?>">
     </td>
    </form>


    <td>
    <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post" style="display:inline" name="ranks<?php echo $rowOut['gameID'].$row['user_id'] ?>">
     <input type="hidden" name="user_id" value="<?php echo $row['user_id'] ?>">
         <input type="hidden" name="gameID" value="<?php echo $rowOut['gameID'] ?>">
         <select name="rankID" onChange="document.forms['ranks<?php echo $rowOut['gameID'].$row['user_id'] ?>'].submit()">
         <?php
         foreach (array_keys($ranks) as $key)
         {
            ?><option value="<?php echo $key ?>" <?php if ($row['rankID'] == $key) echo 'selected' ?>><?php echo $ranks[$key] ?></option><?php
         }
         ?>
         </select>
    </form>
    </td>
    <td>
    <form action="m_user_profile.php" method="post">
    <input type="hidden" name="user_id" value="<?php echo $row['user_id'] ?>">
    <input type="submit" class="black_box" value="Profile">
    </form>
    </td>
    </tr>
    

    
    
    
    <?php
    }
}
    ?>
    
    <!-- start hack -->
    <tr>
<td colspan="4" align="center">
    
- Management -
    <tr class="tr1" onmouseover="this.className='tr2'" onmouseout="this.className='tr1'">

        <br /><br />
        This section is very hard. Still in development. Too much school work at the moment! :'(
        <br /><br />
    </td>
    </tr>
    </tr>
<!-- end hack -->
    
    
    </tbody>
    </table>
</div>


<?php


require('parts/end.php');

?>

Thanks in advance guys.

This will display all the entries in an array we set ($test) in a drop down menu. Not sure if this is exactly what you wanted. Let me know if you need any more help on this.

PHP Code:

<body>
<form action="xxxx" method="get">
    <select name="Test" onchange="this.form.submit();">
    <optgroup Label="Test">    
    <?php
    $test = array("Option 1", "Option 2", "Option 3");
    
    foreach ($test as $value) {
        print ("<option value=\"$value\">$value</option>\n");
    }
    ?>
    </optgroup>
    </select>
    <input type="submit" class="button" value="Submit" />
</form>
</body>

PHP Code:

 <select name="rankID" onChange="document.forms['ranks<?php echo $rowOut['gameID'].$row['user_id'] ?>'].submit()">
         <?php
         foreach (array_keys($ranks) as $key)
         {
            ?><option value="<?php echo $key ?>" <?php if ($row['rankID'] == $key) echo 'selected' ?>><?php echo $ranks[$key] ?></option><?php
         }
         ?>
         </select>

This part creates the select, you just need an extra section on the end to add your new option:

PHP Code:

 <select name="rankID" onChange="document.forms['ranks<?php echo $rowOut['gameID'].$row['user_id'] ?>'].submit()">
         <?php
         foreach (array_keys($ranks) as $key)
         {
            ?><option value="<?php echo $key ?>" <?php if ($row['rankID'] == $key) echo 'selected' ?>><?php echo $ranks[$key] ?></option><?php
         }
        
if($username == "whoever is the admin" ) {
  echo '<option value="manager">Manager</option>';
}

 ?>
         </select>