Append Select List value to URL - html

Question

I have a form that is nothing more than a select list that is displaying records from a database and a button. All I want to do is when they select an option and click Submit, it takes them to a page that deletes the record in question. To delete it - I need the tech_id (from the select list) to be appended to the URL. I've done it the way I would with a text field, but that didn't work. Any suggestions?
<form method="post" id="form1" name="form1" action="delete-tech.php?tech_id=<?php echo $_POST['technician']; ?>">
<p>Choose Technician to Delete:
<select name="technician" id="technician" title="technician">
<?php
do {
?>
<option value="<?php echo $row_getTechs['tech_id']?>"><?php echo $row_getTechs['tech_name']?></option>
<?php
} while ($row_getTechs = mysqli_fetch_assoc($getTechs));
$rows = mysqli_num_rows($getTechs);
if($rows > 0) {
mysqli_data_seek($getTechs, 0);
$row_getTechs = mysqli_fetch_assoc($getTechs);
}
?>
</select>
</p>
<p>
<input name="submit" type="submit" id="submit" value="Delete Technician">
</p>
</form>

Answer 1

The error lies in the coding construct.
I have slightly changed the position of a code segment following while statement as follows(i.e. placed it before the do phrase):
<form method="GET" id="form1" name="form1" action="delete-tech.php">
<p>Choose Technician to Delete:
<select name="technician" id="technician" title="technician">
<?php
$rows = mysqli_num_rows($getTechs);
if($rows > 0) {
mysqli_data_seek($getTechs, 0);
$row_getTechs = mysqli_fetch_assoc($getTechs);
do {
?>
<option value="<?php echo $row_getTechs['tech_id']?>"><?php echo $row_getTechs['tech_name']?></option>
<?php
}while ($row_getTechs = mysqli_fetch_assoc($getTechs));
}
?>
</select>
</p>
<p>
<input name="submit" type="submit" id="submit" value="Delete Technician">
</p>
</form>
It should append the information(list-value) from the form to the URL as you desired. Check it out.
As you say it's not working there is another way using JavaScript:
<form method="post" id="form1" name="form1" action="delete-tech.php">
<p>Choose Technician to Delete:
<select name="technician" id="technician" title="technician">
<?php
$rows = mysqli_num_rows($getTechs);
if($rows > 0) {
mysqli_data_seek($getTechs, 0);
$row_getTechs = mysqli_fetch_assoc($getTechs);
do {
?>
<option value="<?php echo $row_getTechs['tech_id']?>"><?php echo $row_getTechs['tech_name']?></option>
<?php
}while ($row_getTechs = mysqli_fetch_assoc($getTechs));
}
?>
</select>
</p>
<p>
<input name="submit" type="button" id="submit" value="Delete Technician" onclick="location.href='delete-tech.php?tech_id='+document.getElementById('technician').value">
</p>
</form>