MySQL

cat_id   cat_group    cat_name       cat_status
1        Vehicles     Cars           1
2        Vehicles     Motorcycles    1
3        Properties   Houses         1
4        Properties   Apartments     1
5        Electronics  Cameras        1
6        Electronics  Gadgets        1

HTML

  <select id="category" name="category">
    <optgroup label="Vehicles">
        <option value="1">Cars</option>
        <option value="2">Motorcycles</option>
    </optgroup>
    <optgroup label="Properties">
        <option value="3">Houses</option>
        <option value="4">Apartments</option>
    </optgroup>
    <optgroup label="Electronics">
        <option value="5">Cameras</option>
        <option value="6">Gadgets</option>
    </optgroup>    
  </select>

PHP

function cat_option()
{
  global $db;
}

Soru

Nasıl kategorilerinin döngü için bir php fonksiyonu oluşturmak mı? Yani formda Ben sadece cat_option() and the results will looks like on HTML tarafından çağrı