如何设置HTML选择框的设定值与PHP

Question

我有一个下一块模板：

<select name="interest"> 
    <option value="seo">SEO и Блоговодство</option> 
    <option value="auto">Авто</option> 
    <option value="business">Бизнес</option> 
    <option value="design">Дизайн</option> 
    ... 

和$result['interest']店产生的价值。

如何将option元素标记为使用PHP选择的元素？

谢谢！

Answer 1

手动方式.....

<select name="interest"> 
    <option value="seo"<?php if($result['interest'] == 'seo'): ?> selected="selected"<?php endif; ?>>SEO и Блоговодство</option> 
    ..... 

的更好的方式是遍历利益

$interests = array(
    'seo' => 'SEO и Блоговодство', 
    'auto' => 'Авто', 
    .... 
); 

<select name="interest"> 
<?php foreach($interests as $var => $interest): ?> 
<option value="<?php echo $var ?>"<?php if($var == $result['interest']): ?> selected="selected"<?php endif; ?>><?php echo $interest ?></option> 
<?php endforeach; ?> 
</select> 

Answer 2

<select name="interest"> 
    <option value="seo"<?php if($result['interest'] == 'seo'){ echo ' selected="selected"'; } ?>>SEO</option> 
    <option value="auto"<?php if($result['interest'] == 'auto'){ echo ' selected="selected"'; } ?>>Auto</option> 
    <option value="business"<?php if($result['interest'] == 'business'){ echo ' selected="selected"'; } ?>>Business</option> 
    <option value="design"<?php if($result['interest'] == 'design'){ echo ' selected="selected"'; } ?>>Design</option> 
</select> 

Answer 3

<?php 
$interests = array('seo' => 'SEO и Блоговодство', 'auto' => 'Aвто', 'business' => 'Бизнес', ...); 
?> 
<select name="interest"> 
<?php 
foreach($interests as $k => $v) { 
?> 
    <option value="<?php echo $k; ?>" <?php if($k == $result['interest']) ?> selected="selected" <?php } ?>><?php echo $v;?></option> 
<?php 
} 
?> 
</select> 

Answer 4

<select name="interest"> 
<option value="seo" <?php echo $result['interest'] == 'seo' ? 'selected' : ''?> >SEO и Блоговодство</option> 
<option value="auto" <?php echo $result['interest'] == 'auto' ? 'selected' : ''?>>Авто</option> 
<option value="business" <?php echo $result['interest'] == 'business' ? 'selected' : ''?>>Бизнес</option> 
<option value="design" <?php echo $result['interest'] == 'design' ? 'selected' : ''?>>Дизайн</option> 

Answer 5

<?php 
$list='<select name="interest"> 
    <option value="seo">SEO и Блоговодство</option> 
    <option value="auto">Авто</option> 
    <option value="business">Бизнес</option> 
    <option value="design">Дизайн</option> 
    ...'; 
echo str_replace('value="' . $result['interest'] . '"','value="' . $result['interest'] . '" selected',$list); 

？> 这涉及到制作一个包含你的列表的字符串，然后使用字符串替换函数来找到正确的选项并将选择的内容添加到标签。如果使用XHTML，则需要使用selected =“selected”。

http://sandbox.onlinephpfunctions.com/code/37eb8f5a213fe5a252cd4da6712f3db0c5558ae3

Answer 6

你需要让PHP插入selected="selected"属性为适当<option>标签，就像这样：

<?php $result=$userRow['ad_type']; ?> 
      <select class="form-control" name="ad_type"> 
       <option <?php if($result == 'text'){ echo ' selected="selected"'; } ?> value="text">Text</option> 
       <option <?php if($result == 'image'){ echo ' selected="selected"'; } ?> value="image">Image</option> 
       <option <?php if($result == 'video'){ echo ' selected="selected"'; } ?> value="video">Video</option> 
       <option <?php if($result == 'htmladsense'){ echo ' selected="selected"'; } ?> value="htmladsense">Html Adsense</option> 
      </select>