示例我的数组
$options = array(
array("brand" => "Puma","code" => "p01","name" => "Puma One"),
array("brand" => "Puma","code" => "p02","name" => "Puma Two"),
array("brand" => "Puma","code" => "p03","name" => "Puma Three"),
array("brand" => "Nike","code" => "n01","name" => "Nike One"),
array("brand" => "Nike","code" => "n02","name" => "Nike Two"),
array("brand" => "Nike","code" => "n03","name" => "Nike Three"),
array("brand" => "Nike","code" => "n04","name" => "Nike Four"),
array("brand" => "Adidas","code" => "a01","name" => "Adidas One"),
array("brand" => "Adidas","code" => "a02","name" => "Adidas Two"),
array("brand" => "Adidas","code" => "a03","name" => "Adidas Three"),
array("brand" => "Adidas","code" => "a04","name" => "Adidas Four"),
array("brand" => "Adidas","code" => "a05","name" => "Adidas Five"),
array("brand" => "Adidas","code" => "a06","name" => "Adidas Six")
);
如何生成以下数组:
<select name="products" id="products">
<optgroup label="Puma">
<option value="p01">Puma One</option>
<option value="p02">Puma Two</option>
<option value="p03">Puma Three</option>
</optgroup>
.......
<optgroup label="Adidas">
<option value="a01">Adidas One</option>
<option value="a02">Adidas Two</option>
<option value="a03">Adidas Three</option>
.......
</optgroup>
</select>
或者您可以根据我的选择选项输出建议更好的数组。请告诉我。