Question

I have a web site that contains an HTML form, in this form I have a dropdownlist with list of agents that works in the company, I want to fetch data from MySQL database to this dropdownlist so when you add a new agent his name will appear as an option in the drop down list.

<select name="agent" id="agent">
</select>  

Answer 1

To do this you want to loop through each row of your query results and use this info for each of your drop down’s options. You should be able to adjust the code below fairly easily to meet your needs.

// Assume $db is a PDO object
$query = $db->query("YOUR QUERY HERE"); // Run your query

echo '<select name="DROP DOWN NAME">'; // Open your drop down box

// Loop through the query results, outputing the options one by one
while ($row = $query->fetch(PDO::FETCH_ASSOC)) {
   echo '<option value="'.htmlspecialchars($row['something']).'">'.htmlspecialchars($row['something']).'</option>';
}

echo '</select>';// Close your drop down box