如何循环数组数据以生成 HTML 选择下拉列表？

Question

我想在我的网上商店中创建产品的动态下拉列表，但我在循环数据时遇到了一些问题。我想用 PHP 循环数据。我的输出是数据数组，它看起来像这样：

array (size=6)
  0 => 
    object(stdClass)[34]
      public 'id_attribute_option' => string '8' (length=1)
      public 'option_name' => string 'Black' (length=5)
      public 'name' => string 'Color' (length=5)
      public 'id_attribute' => string '2' (length=1)
  1 => 
    object(stdClass)[35]
      public 'id_attribute_option' => string '10' (length=2)
      public 'option_name' => string 'Green' (length=6)
      public 'name' => string 'Color' (length=5)
      public 'id_attribute' => string '2' (length=1) 
  2 => 
    object(stdClass)[36]
      public 'id_attribute_option' => string '84' (length=2)
      public 'option_name' => string 'S' (length=1)
      public 'name' => string 'Size' (length=8)
      public 'id_attribute' => string '9' (length=1)
  3 => 
    object(stdClass)[37]
      public 'id_attribute_option' => string '85' (length=2)
      public 'option_name' => string 'M' (length=1)
      public 'name' => string 'Size' (length=8)
      public 'id_attribute' => string '9' (length=1)
  4 => 
    object(stdClass)[38]
      public 'id_attribute_option' => string '86' (length=2)
      public 'option_name' => string 'L' (length=1)
      public 'name' => string 'Size' (length=8)
      public 'id_attribute' => string '9' (length=1)
  5 => 
    object(stdClass)[39]
      public 'id_attribute_option' => string '87' (length=2)
      public 'option_name' => string 'XL' (length=2)
      public 'name' => string 'Size' (length=8)
      public 'id_attribute' => string '9' (length=1)

而想要的效果应该是这样的。

Color:<select>
      <option value="8">Black</option>
      <option value="10">Green</option>
    </select>
Size:<select>
      <option value="84">S</option>
      <option value="85">M</option>
      <option value="86">L</option>
      <option value="87">XL</option>
    </select>

有人可以帮我吗？

Answer 1

foreach($yourArray as $item)
{
  // you are dealing with objects so $item->option_name for example
  // this should be easy :p
  // there's no perfect way to do most things
  // so that bottom link you pasted in the comments isn't
  // going to teach you anything but how to copy others
}

Answer 2

首先，您可以使用此代码 (DEMO) 将它们分开

$colors = $sizes = array();
array_map(function($item) use(&$colors, &$sizes){
    if($item->name == 'Color') $colors[] = $item;
    if($item->name == 'Size') $sizes[] = $item;
}, $array);

然后使用两个不同的foreach循环，一个用于colors，一个用于size like

// BUild the Color select
echo "<select id='color'>";
foreach($colors as $color){
    echo "<option value='$color->id_attribute_option'>$color->option_name</option>";
}
echo "</select>";

// Build the Size select
echo "<select id='size'>";
foreach($sizes as $size){
    echo "<option value='$size->id_attribute_option'>$size->option_name</option>";
}
echo "</select>";