禁用的表单元素能否与启用的表单元素共享列？
我有一个表单，它有4组组合框，这些组合框由另一个表中的数据填充，只有在做出某些选择时才可见和活动，每组组合框包含4个可能的选项集，其中一个或没有一个可见和活动，我已经将每组组合框设置为保存到同一个表列，因为任何时候都只有一个在工作，所以在筛选数据时，每组选项的4个独立列会太复杂(至少在我看来(。
我遇到的问题是，我将一个空白值保存到数据库表中，而不是所选的值，我在下面放置了代码，以帮助解释我试图做什么。
表单编码可见/活动选项
<select name="Lab1" id="Lab1" style="visibility:hidden;" onChange="if (this.value=='Alpha Bio Labs'){this.form['Samp1'].style.visibility='visible'}
if (this.value=='Alpha Bio Labs'){this.form['Samp1'].disabled=false}
if (this.value=='Alpha Bio Labs'){this.form['Samp2'].style.visibility='hidden'}
if (this.value=='Alpha Bio Labs'){this.form['Samp2'].disabled=true}
if (this.value=='Alpha Bio Labs'){this.form['Samp3'].style.visibility='hidden'}
if (this.value=='Alpha Bio Labs'){this.form['Samp3'].disabled=true}
if (this.value=='Alpha Bio Labs'){this.form['Samp4'].style.visibility='hidden'}
if (this.value=='Alpha Bio Labs'){this.form['Samp4'].disabled=true}
if (this.value=='Alpha Bio Labs'){this.form['SegmCol1'].style.visibility='visible'}
if (this.value=='Alpha Bio Labs'){this.form['SegmCol1'].disabled=false}
if (this.value=='Cellmark'){this.form['Samp1'].style.visibility='hidden'}
if (this.value=='Cellmark'){this.form['Samp1'].disabled=true}
if (this.value=='Cellmark'){this.form['Samp2'].style.visibility='visible'}
if (this.value=='Cellmark'){this.form['Samp2'].disabled=false}
if (this.value=='Cellmark'){this.form['Samp3'].style.visibility='hidden'}
if (this.value=='Cellmark'){this.form['Samp3'].disabled=true}
if (this.value=='Cellmark'){this.form['Samp4'].style.visibility='hidden'}
if (this.value=='Cellmark'){this.form['Samp4'].disabled=true}
if (this.value=='Cellmark'){this.form['SegmCol1'].style.visibility='visible'}
if (this.value=='Cellmark'){this.form['SegmCol1'].disabled=false}
if (this.value=='DNA Legal'){this.form['Samp1'].style.visibility='hidden'}
if (this.value=='DNA Legal'){this.form['Samp1'].disabled=true}
if (this.value=='DNA Legal'){this.form['Samp2'].style.visibility='hidden'}
if (this.value=='DNA Legal'){this.form['Samp2'].disabled=true}
if (this.value=='DNA Legal'){this.form['Samp3'].style.visibility='visible'}
if (this.value=='DNA Legal'){this.form['Samp3'].disabled=false}
if (this.value=='DNA Legal'){this.form['Samp4'].style.visibility='hidden'}
if (this.value=='DNA Legal'){this.form['Samp4'].disabled=true}
if (this.value=='DNA Legal'){this.form['SegmCol1'].style.visibility='visible'}
if (this.value=='DNA Legal'){this.form['SegmCol1'].disabled=false}
if (this.value=='The Doctors Lab'){this.form['Samp1'].style.visibility='hidden'}
if (this.value=='The Doctors Lab'){this.form['Samp1'].disabled=true}
if (this.value=='The Doctors Lab'){this.form['Samp2'].style.visibility='hidden'}
if (this.value=='The Doctors Lab'){this.form['Samp2'].disabled=true}
if (this.value=='The Doctors Lab'){this.form['Samp3'].style.visibility='hidden'}
if (this.value=='The Doctors Lab'){this.form['Samp3'].disabled=true}
if (this.value=='The Doctors Lab'){this.form['Samp4'].style.visibility='visible'}
if (this.value=='The Doctors Lab'){this.form['Samp4'].disabled=false}
if (this.value=='The Doctors Lab'){this.form['SegmCol1'].style.visibility='visible'}
if (this.value=='The Doctors Lab'){this.form['SegmCol1'].disabled=false}
if (this.value=='Lab'){this.form['Samp1'].style.visibility='hidden'}
if (this.value=='Lab'){this.form['Samp1'].disabled=true}
if (this.value=='Lab'){this.form['Samp2'].style.visibility='hidden'}
if (this.value=='Lab'){this.form['Samp2'].disabled=true}
if (this.value=='Lab'){this.form['Samp3'].style.visibility='hidden'}
if (this.value=='Lab'){this.form['Samp3'].disabled=true}
if (this.value=='Lab'){this.form['Samp4'].style.visibility='hidden'}
if (this.value=='Lab'){this.form['Samp4'].disabled=true}
if (this.value=='Lab'){this.form['SegmCol1'].style.visibility='hidden'}
if (this.value=='Lab'){this.form['SegmCol1'].disabled=true};">
<option selected>Lab</option>
<option value="Alpha Bio Labs">Alpha Bio Labs</option>
<option value="Cellmark">Cellmark</option>
<option value="DNA Legal">DNA Legal</option>
<option value="The Doctors Lab">The Doctors Lab</option>
</select>
将保存到数据库的选择
<option selected >Select Sample Type</option>
<?php
$connection = mysqli_connect("", "", "", "");
$results = mysqli_query($connection, "SELECT SampleType, LabFee, LabFeeExtra FROM `sampletypes` WHERE Lab = 'Alpha Bio Labs'");
mysqli_close($connection);
foreach($results as $user): ?>
<option value="<?= $user['SampleType']; ?>">
<?= $user['SampleType']; ?>
</option>
<?php endforeach; ?>
</select>
php编码保存到数据库
$LaborDept = $_POST['Lab1'];
$SampleType1 = $_POST['Samp1'];
$SampleType1 = $_POST['Samp2'];
$SampleType1 = $_POST['Samp3'];
$SampleType1 = $_POST['Samp4'];
$Segmented1 = $_POST['SegmCol1'];
$LaborDept2 = $_POST['Lab2'];
$SampleType2 = $_POST['Samp5'];
$SampleType2 = $_POST['Samp6'];
$SampleType2 = $_POST['Samp7'];
$SampleType2 = $_POST['Samp8'];
$Segmented2 = $_POST['SegmCol2'];
$LaborDept3 = $_POST['Lab3'];
$SampleType3 = $_POST['Samp9'];
$SampleType3 = $_POST['Samp10'];
$SampleType3 = $_POST['Samp11'];
$SampleType3 = $_POST['Samp12'];
$Segmented3 = $_POST['SegmCol3'];
$LaborDept4 = $_POST['Lab4'];
$SampleType4 = $_POST['Samp13'];
$SampleType4 = $_POST['Samp14'];
$SampleType4 = $_POST['Samp15'];
$SampleType4 = $_POST['Samp16'];
$SegmentedCollection = $_POST['SegmCol'];
$Decleration = $_POST['Decl'];
mysqli_query($connection, "INSERT INTO `collectsamp`(`SampleID`, `LaborDept`, `NumberofSamples`, `SampleType1`, `Segmented1`, `LaborDept2`, `SampleType2`, `Segmented2`, `LaborDept3`, `SampleType3`, `Segmented3`, `LaborDept4`, `SampleType4`, `SegmentedCollection`, `Decleration`) VALUES ('$LabID', '$LaborDept', '$NumberofSamples', '$SampleType1', '$Segmented1', '$LaborDept2', '$SampleType2', '$Segmented2', '$LaborDept3', '$SampleType3', '$Segmented3', '$LaborDept4', '$SampleType4', '$SegmentedCollection', '$Decleration')");
如有任何帮助，将不胜感激
我通过重新制作组合框并调整编码以匹配下面的片段来修复它；
$SampleType4 = $_POST['Samp13'] . " " . $_POST['Samp14'] . " " . $_POST['Samp15'] . " " . $_POST['Samp16'];