Selected option does not show in dropdown menu - php

Question

I have created function, which retrieve the data from database and put it into dropdown menu. That step works fine.
Here I get dropdown menu with all needed values.
function termopaneli() {
$link = new mysqli("localhost", "xxx", "xxxx", "xxx");
$link->set_charset("utf8");
$sql=mysqli_query($link, "SELECT * FROM termopaneli order by PaneliId asc");
echo '<option value="">Izaberi panel</option>';
while($record=mysqli_fetch_array($sql)){
echo '<option value= "' .$record['PaneliId']. '">' . $record['PaneliNaziv'] . ' </option>';
}
}
Later on when I want to see what is chosen inside dropdown, it does not print. I am using this form to edit, so selected value is important.
First I get values from database. Everything works except for printing selected value in dropdown.
First I get $panel value and when I echo $panel, I get value I should. But it does not show up as selected option.
<label>Panel</label>
<select class="form-control" name="panel" value="<?php echo $panel; selected" ?>">
<option value=<?php echo $panel?> selected>
<?php termopaneli()?>
</option>
</select>
Any help or advice is appreciated.

Answer 1

Looks like </option> should come before your PHP function call.
Also, check the value in <select> is correct?
<label>Panel</label>
<select class="form-control" name="panel" value="<?php echo $panel; ?>">
<option value=<?php echo $panel?> selected> SELECTED_OPTION </option>
<?php termopaneli()?>
</select>

Answer 2

Suppose at time of edit u have selected value like $select=5
<label>Panel</label>
<select class="form-control" name="panel" value="<?php echo $panel; selected" ?>">
<option value=<?php echo $panel?> selected>
<?php termopaneli($select)?>
</option>
</select>
function termopaneli($select) {
$link = new mysqli("localhost", "xxx", "xxxx", "xxx");
$link->set_charset("utf8");
$sql=mysqli_query($link, "SELECT * FROM termopaneli order by PaneliId asc");
echo '<option value="">Izaberi panel</option>';
while($record=mysqli_fetch_array($sql)){
echo '<option value= "' .$record['PaneliId']. '"; if($record['PaneliID']==$select){echo 'selected=selected'}>' . $record['PaneliNaziv'] . ' </option>';
}
}