how to make your options in a dropdown menu be from the database php code example

Example: php static dropdown list example

<?php
$toy_cars = array("Pull Back Cars","Remote Cars", "Electric Cars", "Toy Race Cars","Lightening Cars");
$array_length = count($toy_cars);
?>
<select name="dynamic_data">
<?php
for ($i=0;$i<$array_length;$i++){
?>
<option value="<?=$toy_cars[$i];?>"><?=$toy_cars[$i];?></option>
<?php
}
?>
</select>