从复选框中获取ID

问题描述：

I'm trying to get the ID's from a load of checkboxes that are in rows that are printed out on a page using a while statement. Each row from the database has a checkbox next to it with the ID in the checkbox value.

Basically I want to do a update query on the checkbox-selected rows, using the ID.

The code for the checkboxes that I have used is:

<input type="checkbox" name="check_list[]" value="<? echo $rows['id']; ?>">

Then when the code for the submit is:

<?
if(!empty($_POST['check_list'])){
     foreach($_POST['check_list'] as $id){
        echo "$id was checked! ";
     }
   }
?>

Just wanted to echo out the results to test that it works before putting it into a query. Trouble is...nothing happens. I just get a blank screen. No error or anything. Surely it should work, it looks right but I don't understand why it doesnt work.

Any help is most appreciated! :)

我正在尝试从一系列复选框中获取ID，这些复选框在页面上打印出来使用while语句。数据库中的每一行都有一个复选框旁边的复选框值ID。 p>

基本上我想使用ID对复选框选择的行进行更新查询。 p>

我使用的复选框的代码是： p>

 ＆lt; input type =“checkbox”name =“check_list []  “value =”＆lt;？echo $ rows ['id'];？＆gt;“＆gt; 
  code>  pre> 
 
 然后当提交的代码为：  p> 
 
 
 ＆lt;？
if（！empty（$ _ POST ['check_list']））{
 foreach（$ _ POST ['check_list'] as $ id）{
 echo  “$ id已经过检查了！”; 
} 
} 
？＆gt; 
  code>  pre> 
 
 只是想要回应结果以测试它在放入之前是否有效 它进入一个查询。 麻烦是......没有任何反应。 我只是得到一个空白的屏幕。 没有错误或任何事情。 当然它应该工作，它看起来正确，但我不明白为什么它不起作用。   p> 
 
 
非常感谢任何帮助！  ：） p> 
  div>

答

Tested below code with one test.php file

<?php
if(!empty($_POST['check_list']))
{
     foreach($_POST['check_list'] as $id){
        echo "<br>$id was checked! ";
     }
}


?>

<form method="post" name="frm">
<input type="checkbox" name="check_list[]" value="1"> 1
<input type="checkbox" name="check_list[]" value="2"> 2
<input type="checkbox" name="check_list[]" value="3"> 3
<input type="checkbox" name="check_list[]" value="4"> 4
<input type="submit" name="submit" />
</form>

please check if you are getting $rows['id'] properly. Things should work fine otherwise.

Thanks.

从复选框中获取ID

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