<?php $cars = array("A4 1.9tdi (2003-2009)", "A4 2.0tdi (2003-2009)", "Passat B7 1.9tdi(2003-2009)", "Passat B7 2.0 tdi(2003-2010)"); foreach($cars as $key => $car){ $model = explode(' ', $car, 2); $make[$model[0]][] = $car; } $stmt = 'Select a car: <select id="cars">'; foreach($make as $label => $type){ $stmt .= '<optgroup label="'.$label.'">'; foreach($type as $car){ list($t, $c) = explode(' ', $car, 2); $stmt .= '<option name="'.$c.'">'.$c.'</option>'; } $stmt .= '</optgroup>'; } $stmt .= '</select>'; echo $stmt; ?>
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