problem with submitted data

[trompie]

I have a program where in the first file(distribution.php) teachers can be selected from multiple dropdownboxes (called teacher_0, teacher_1, teacher_2 etc...). No problem so far, but when I submit, in the second file(selected.php) I want to show the selected teachers. This doesn't seem to work... please help

distribution.php

...
<form action="selected.php" method=post>
<table>
<?for ($x=0;$x<20;$x++){

$query2 = "select * from docentes order by doc_name";
$result2 = mysql_query($query2);
$count2 = mysql_numrows($result2);

 $teacher = "teacher_".$x;

?>
<tr>
<td>
<select name=<? echo $teacher;?>>
<option>-------Select-------</option>
<?

for($y=0;$y<$count2;$y++){
$doc_name = mysql_result($result2, $y,"doc_name");
$doc_id = mysql_result ($result2, $y, "doc_id");
echo"<option value='$doc_id'>$doc_name</option>";
}
?>
</select>
</td>
</tr>
<?}?>
</table>
<input type=submit value=submit>
</form>
...

selected.php

...
<?
for($i=0;$i<20;$i++){

$selectedteacher='$teacher_'.$i;
$selectedteacher= addslashes($selectedteacher);

$query = "select * from docentes where doc_id='$selectedteacher'";
$result = mysql_query($query);
$count = mysql_numrows($result);
$doc_name = mysql_result($result, 0, "doc_name");
echo "this is the selected docent $i:";
echo "<input type=text value='$doc_name'><br>";
}
?>

[Pig]

You cannot define a variable that way. Check out variable variables in the manual to accomplish that kind of variable creation. However, it would probably be easier to pass your teachers as an array. Name each field teacher[]. When the form is proccessed, every field that is named teacher will become part of an array. Then you can do a simple for loop to get what you need.

[trompie]

thanks for the tip... it works now