Mysql can't perform more than 1 query at a time

Question

When I do:

$q = \'insert into movies values(\"lion king\"); select * from movies;\';
$result = $db->query($q);
echo mysqli_num_rows($result);

Answer 1

$q = 'insert into movies values("lion king")';
$result = $db->query($q);
$q = 'select * from movies';
$result = $db->query($q);
echo mysqli_num_rows($result);