HTML & PHP | Filling a select with a query - php

Question

I have a function that uses mysqli function that is as follows:
public function GetProjectOptions()
{
$return = "";
$sql = "SELECT `id`, `project_name` FROM `projects`;";
$rs = static::$link->query($sql);
$return .= '<select class="form-control" name="project">';
while ($result = mysqli_fetch_assoc($rs));
{
$return .= "<option value='" . $result['id'] . "'>" .
$result['project_name'] . "</option>";
}
$return .= '</select>';
return $return;
}
The purpose of this function is to create the options and select that will be used for the Projects on my site, I know that there are 4 projects currently stored in the table, but they do not return in this function, what have I done wrong?
EDIT:
Link to screen output: (http://i.imgur.com/YIYiheH.png)
Link to code output: (http://i.imgur.com/RZsUIwQ.png)
Link to code usage: (http://i.imgur.com/4J9rvd7.png)
(Wouldn't let me do normal links)

Answer 1

I found the problem.
Remove the semi-colon here
while ($result = mysqli_fetch_assoc($rs));
^
that's why it's not throwing an error, because it's considered as valid syntax.
Your loop is being stopped/terminated by it.

Answer 2

What I think Jay and Styphon mean by their comment is that you don't do any error checking within your SELECT query. Are you sure your query is executing properly? I understand this is a relatively simple query and that you're positive there are four projects currently stored in your table, but it's always a good habit to check. Try this:
public function GetProjectOptions()
{
$return = "";
$sql = "SELECT `id`, `project_name` FROM `projects`;";
$rs = static::$link->query($sql);
$return .= '<select class="form-control" name="project">';
if($rs){
while ($result = mysqli_fetch_assoc($rs));
{
$return .= "<option value='" . $result['id'] . "'>" . $result['project_name'] . "</option>";
}
$return .= '</select>';
}else{
$message = 'Invalid query: ' . mysqli_error() . "\n";
$message .= 'Whole query: ' . $sql;
die($message);
}
return $return;
}
I hope this helps!