添加“已选择”属性为PHP中的选定选项 [英] Adding "selected" attribute to the selected option in PHP

问题描述

我正在创建我的页面构建器，但我对选择框没什么问题。

这是我通过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>黄色< /选项>'
 +'< / select>'
 
 $（'。items_options'）。追加（item_opts）; 
  

这就是我在PHP中所称的方式

 < select> 
<？php if（$ pb_item ['message_color'] ==red）{？> 
< option selected =selectedvalue =red> Red< / option> 
< option value =green>绿色< /选项> 
< option value =blue> Blue< / option> 
< option value =yellow>黄色< /选项> 
<？php} elseif（$ pb_item ['message_color'] ==green）{？> 
< option value =red> Red< / option> 
<选择选项=已选择值=绿色>绿色< /选项> 
< option value =blue> Blue< / option> 
< option value =yellow>黄色< /选项> 
<？php} elseif（$ pb_item ['message_color'] ==blue）{？> 
< option value =red> Red< / option> 
< option value =green>绿色< /选项> 
< option selected =selectedvalue =blue> Blue< / option> 
< option value =yellow>黄色< /选项> 
<？php} else {？> 
< option value =red> Red< / option> 
< option value =green>绿色< /选项> 
< option value =blue> Blue< / option> 
<选择选项=已选择值=黄色>黄色< /选项> 
<？php}？> 
< / select> 
  

是否有更好的解决方案如何将选定参数添加到所选选项？

thx您的时间和建议：）

解决方案

是，有更好的解决方案

 < select> 
< option<？ （$ pb_item ['message_color'] =='red'？'selected =selected'）？>值= 红色 >红色< /选项> 
< option<？ （$ pb_item ['message_color'] =='green'？'selected =selected'）？>值= 绿色 >绿色< /选项> 
< option<？ （$ pb_item ['message_color'] =='blue'？'selected =selected'）？>值= 蓝色 >蓝色< /选项> 
< option<？ （$ pb_item ['message_color'] =='yellow'？'selected =selected'）？>值= 黄色 →黄色< /选项> 
< / select>即使你可以通过for循环列出选项，例如：$ / b> 
 b $ b 
  $ colors = array（'blue'，'red'，..）; 
 foreach（$ colors as $ color）{
 echo< option。（$ pb_item ['message_color'] == $ color？'selected =selected'）。value =' $颜色'>中。 ucwords（$ color）。 < /选项> 中; 
} 
  
 
I'm creating my page builder but I have little problem with select box.

This is how I create a selectbox via jQuery
    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);
And this is how I call it in PHP
<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> 
Is there some better solution how how to add parametr "selected" to the selected option than I have?

thx for your time and your advices :)
解决方案
Yes, there is better solution
<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>
even if you can list options via for loop for example:
$colors = array('blue', 'red', ..);
foreach($colors as $color) {
    echo "<option ".($pb_item['message_color'] == $color?'selected="selected"')."value='$color'>" . ucwords($color) . "</option>";
}


                        
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