php - 将 "selected"属性添加到 PHP 中的选定选项

Question

我正在创建我的页面构建器，但我对选择框没有什么问题。

这就是我通过 jQuery 创建选择框的方法

    var item_opts = '<select>'
        + '<option value="red">Red</option>'
        + '<option value="green">Green</option>'
        + '<option value="blue">Blue</option>'
        + '<option value="yellow">Yellow</option>'
    + '</select>'

$('.items_options').append(item_opts);

这就是我在 PHP 中的调用方式

<select>
  <?php if ( $pb_item['message_color'] == "red" ) { ?>
    <option selected="selected" value="red">Red</option>
    <option value="green">Green</option>
    <option value="blue">Blue</option>
    <option value="yellow">Yellow</option>
  <?php } elseif ( $pb_item['message_color'] == "green" ) { ?>
    <option value="red">Red</option>
    <option selected="selected" value="green">Green</option>
    <option value="blue">Blue</option>
    <option value="yellow">Yellow</option>
  <?php } elseif ( $pb_item['message_color'] == "blue" ) { ?>
    <option value="red">Red</option>
    <option value="green">Green</option>
    <option selected="selected" value="blue">Blue</option>
    <option value="yellow">Yellow</option>
  <?php } else { ?>
    <option value="red">Red</option>
    <option value="green">Green</option>
    <option value="blue">Blue</option>
    <option selected="selected" value="yellow">Yellow</option>
  <?php } ?>                      
</select> 

是否有比我更好的解决方案如何将参数“selected”添加到所选选项？

感谢您的时间和建议:)

Answer 1

是的，有更好的解决方案

<select>
    <option <? ($pb_item['message_color'] == 'red'?'selected="selected"') ?> value="red">Red</option>
    <option <? ($pb_item['message_color'] == 'green'?'selected="selected"') ?> value="green">Green</option>
    <option <? ($pb_item['message_color'] == 'blue'?'selected="selected"') ?> value="blue">Blue</option>
    <option <? ($pb_item['message_color'] == 'yellow'?'selected="selected"') ?> value="yellow">Yellow</option>                   
</select>

即使您可以通过 for 循环列出选项，例如:

$colors = array('blue', 'red', ..);
foreach($colors as $color) {
    echo "<option ".($pb_item['message_color'] == $color?'selected="selected"')."value='$color'>" . ucwords($color) . "</option>";
}