PHP issue, html disappearing in source.

[black-ops]

I have made a script that functions perfectly within normal parameters, However as the script became a little more dynamic I noticed a problem. Although the functionality is there and works perfectly fine, when viewing the html source the elements have completely disappeared. This only occurred when I generated a input field within a foreach().

Heres the code:

foreach($_POST as $k => $v){
    if($v == 'present'){

    $pre = 'percentage_';
    $post = $pre.$k;
    $val[$k] = $_POST[$post];

       $sql = mysql_query("SELECT * FROM table WHERE element = '$k'");
  
       $max = mysql_num_rows($sql);
 
       $first = mysql_result($sql, 0, 'element');

        for($i = 0; $i<$max; $i++){

            $element = mysql_result($sql, $i, 'sub_element');

            $element = str_replace('_', ' ',$element);

            $current = mysql_result($sql, $i, 'element');

            if($i == 0){
                echo "<fieldset><legend><b>".$current." : ".$val[$k]."%</b></legend>";
                echo $element."<input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"present\"> Yes <input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"absent\" checked> No <input type=\"text\" name=\"percentage_".mysql_result($sql,$i,'sub_element')."\" />% of EQF<br />";
            }

            if($i>0){

                $previous = mysql_result($sql, $i-1, 'element');

                if($current == $previous){
                    echo $element."<input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"present\"> Yes <input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"absent\" checked> No <input type=\"text\" name=\"percentage_".mysql_result($sql,$i,'sub_element')."\" />% of EQF<br />";
                }
                else{
                    echo "</fieldset><fieldset><legend><b>".$current."</b></legend>";
                    echo $element."<input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"present\"> Yes <input type=\"radio\" name=\"".mysql_result($sql,$i,'sub_element')."\" value=\"absent\" checked> No <input type=\"text\" name=\"percentage_".mysql_result($sql,$i,'sub_element')."\" />% of EQF<br />";
                }
            }
        }
    }
}
?>

If I take the foreach out it's fine and works the same but with the html tags inside. The issue is I need the foreach as I will cycle through the posts. This is far from a perfect script for the type of job I aim to do but sadly it's the only way I can achieve what I want to do for this system.