PHP:表单选择框不会将更改的选择写入数据库

好的，所以我将此表单设置为预加载数据库记录以供编辑，如果您将 ?edit=1 添加到 url，它将加载记录 #1 以供编辑到表单中。我有一个像这样的盒子-

<select class="field select addr">
  <option value="no"<?php if($row['has_amenities'] == "no") {echo ' selected=\"selected\"'; } ?>>No</option>
  <option value="yes"<?php if($row['has_amenities'] == "yes") {echo     'selected=\"selected\"'; } ?>>Yes</option>
</select>

现在，假设 $row['has_amenities'] 是"is"，那么当加载表单时，选择框显示"is"。

但是，如果我将选择框更改为“否”并单击“保存”，它不会向数据库写入“否”，但它确实会清除该记录的"is"。

我做错了什么？

这是更新代码--

    $sql = "UPDATE venues SET microsite_title = '$_POST[microsite_title]', 
microsite_city_title = '$_POST[microsite_city_title]', logo = '$_POST[logo]', photo1 = 
'$_POST[photo1]', photo2 = '$_POST[photo2]', photo3 = '$_POST[photo3]', photo4 = 
'$_POST[photo4]', photo5 = '$_POST[photo5]', photo6 = '$_POST[photo6]', photo7 = 
'$_POST[photo7]', photo8 = '$_POST[photo8]', website_primary = '$_POST[website_primary]', 
website_secondary = '$_POST[website_secondary]', paragraph_1_title = 
'$_POST[paragraph_1_title]', paragraph_1 = '$_POST[paragraph_1]', paragraph_2_title = 
'$_POST[paragraph_2_title]', paragraph_2 = '$_POST[paragraph_2]', paragraph_3_title = 
'$_POST[paragraph_3_title]', paragraph_3 = '$_POST[paragraph_3]', paragraph_4_title = 
'$_POST[paragraph_4_title]', paragraph_4 = '$_POST[paragraph_4]', paragraph_5_title = 
'$_POST[paragraph_5_title]', paragraph_5 = '$_POST[paragraph_5]', paragraph_6_title = 
'$_POST[paragraph_6_title]', paragraph_6 = '$_POST[paragraph_6]', top10_1 = 
'$_POST[top10_1]', top10_2 = '$_POST[top10_2]', top10_3 = '$_POST[top10_3]', top10_4 = 
'$_POST[top10_4]', top10_5 = '$_POST[top10_5]', top10_6 = '$_POST[top10_6]', top10_7 = 
'$_POST[top10_7]', top10_8 = '$_POST[top10_8]', top10_9 = '$_POST[top10_9]', top10_10 = 
'$_POST[top10_10]', top10_locale = '$_POST[top10_locale]', contact_title = 
'$_POST[contact_title]', contact_street_addr = '$_POST[contact_street_addr]', 
contact_street_addr2 = '$_POST[contact_street_addr2]', contact_city = 
'$_POST[contact_city]', contact_state = '$_POST[contact_state]', contact_zip = 
'$_POST[contact_zip]', contact_phone = '$_POST[contact_phone]', contact_tollfree = 
'$_POST[contact_tollfree]', latitude = '$_POST[latitude]', longitude =     '$_POST[longitude]', 
testimonial = '$_POST[testimonial]', sidebar_title = '$_POST[sidebar_title]', 
sidebar_content = '$_POST[sidebar_content]', has_amenities = '$_POST[has_amenities]' 
WHERE id = '$_POST[query]'";

此外，我知道在不首先清理 $_POST 值的情况下写入它们不是一个好主意，但这是防火墙后面的内部表单等。我稍后会在它工作后清理它:o)

谢谢!

最佳答案

看起来