how to show data from mySql when i select 1 option in combobox usig php?

Question

when i select 1 option in combobox and write text in input then click submit button i want to show data from mySql usig php,for example when i select form1(option1) in combobox(name=type) and write 12 in input(label=code) i want to show whole titles that they have type=form1 and code=12 from mySql usin php?
https://code.sololearn.com/W780LlwEym2Y/?ref=app

Answer 1

$res = 'select * from sololearn where username="Hello"';
/*Customize $res to select what options to display */

while ($row = mysqli_fetch_array($res, MYSQLI_ASSOC)) {
echo '<li>';
echo $row['name'];
echo '</li>';
}