![](/img/trans.png)
[英]Drop down list to select a table and an additional drop down list to filter
[英]Drop down list in a table
為什么我的下拉列表在表格中分開來區分列。 示例我希望在下拉列表中顯示3個選項。 這些是我數據庫中的數據。
例如: company a, company b
將顯示在下拉列表中。
相反,現在只有一個選項(company a)
可用於下拉列表, (company b)
顯示在表的下一行而不是一起顯示在單個下拉列表中。
<?
$result = mysqli_query($con,"SELECT admin_no, name, GPA, gender, job_details.job_title, job_details.no_of_vacancy FROM student_details, job_details ORDER BY `GPA` DESC ");
$result2 = mysqli_query($con, "SELECT job_title FROM job_details;");
$row2 = mysqli_fetch_assoc($result2);
while($row = mysqli_fetch_assoc($result))
{
while ($row2 = mysqli_fetch_array($result2))
{
echo "<tr>";
echo "<td bgColor=white>" . $row['admin_no'] . "</td>";
echo "<td bgColor=white>" . $row['name'] . "</td>";
echo "<td bgColor=white>" . $row['GPA'] . "</td>";
echo "<td bgColor=white>" . $row['gender'] . "</td>";
echo "<td><select name='ddl' onclick='if(this.value != '') { myform.submit(); }'><option value='". $row2['job_title'] ."'> ". $row2['job_title'] ."</option></td>";
echo "</tr>";
}
}
echo "</table>";
?>
</form>
嘗試這個:
while($row = mysqli_fetch_assoc($result))
{
echo "<tr>";
echo "<td bgColor=white>" . $row['admin_no'] . "</td>";
echo "<td bgColor=white>" . $row['name'] . "</td>";
echo "<td bgColor=white>" . $row['GPA'] . "</td>";
echo "<td bgColor=white>" . $row['gender'] . "</td>";
echo "<td><select name='ddl' onclick='if(this.value != '') { myform.submit(); }'>";
while ($row2 = mysqli_fetch_array($result2))
{
echo "<option value='". $row2['job_title'] ."'> ". $row2['job_title'] ."</option>";
}
echo "</select></td>";
echo "</tr>";
}
試試這個,你錯過了關閉</select>
標簽,我已經重寫了代碼,即在表生成部分上面移動<option>
標簽生成。 這樣可以避免不必要的循環。
<?php
$result = mysqli_query($con,"SELECT admin_no, name, GPA, gender, job_details.job_title, job_details.no_of_vacancy FROM student_details, job_details ORDER BY `GPA` DESC ");
$result2 = mysqli_query($con, "SELECT job_title FROM job_details");
$row2 = mysqli_fetch_assoc($result2);
/*options sections start*/
$options= '';
while ($row2 = mysqli_fetch_array($result2))
{
$options .='<option value="'. $row2['job_title'] .'"> '. $row2['job_title'] .'</option>';
}
/*options sections end*/
while($row = mysqli_fetch_assoc($result))
{
echo "<tr>";
echo "<td bgColor=white>" . $row['admin_no'] . "</td>";
echo "<td bgColor=white>" . $row['name'] . "</td>";
echo "<td bgColor=white>" . $row['GPA'] . "</td>";
echo "<td bgColor=white>" . $row['gender'] . "</td>";
echo "<td><select name='ddl' onclick='if(this.value != '') { myform.submit(); }'>".$options."</select></td>";
echo "</tr>";
}
echo "</table>";
?>
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