PHP Get Checkbox Value Content Example_PHP Tutorial

Checkbox is stored in the form of an array in HTML. If we want to get the checkbox value selected by the user, we can use traversal or directly convert the array into characters using implode to store it.

PHP requires form elements with the same name to be named in array form and assigned value. Otherwise he cannot decompose.

Example 1: Using foreach to traverse checkbox

代码如下	复制代码

After submission, use $_POST['chk'] to access. The elements in the array are the values ​​of the selected check boxes

PHP code:

The code is as follows

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代码如下	复制代码
foreach( $_POST["chk"] as $i=>$a )   { echo $i."==>".$a." "; } //或者使用$_POST["chk"][0]单独使用 ?>

foreach( $_POST["chk"] as $i=>$a )
{ echo $i."==>".$a."
"; }
//Or use $_POST["chk"][0] alone
?>

结果:

0=>1
1=>2
2=>3

例2利用explode

 代码如下

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代码如下

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中文普通话 日语 朝鲜语 西班牙语 俄语 德语 法语 英语 少数民族语言 中文闽南语 中文粤语 其它国家语言 '中文普通话', '11'=>'日语', '10'=>'朝鲜语', '9'=>'西班牙语', '8'=>'俄语', '7'=>'德语', '6'=>'法语', '5'=>'英语', '4'=>'少数民族语言', '3'=>'中文闽南语', '2'=>'中文粤语', '12'=>'其它国家语言', ); $lang = $_POST['lang']; if (is_array($lang)){ $cbsports = ' '; foreach ($CACHE['lang'] as $key => $val) { $cbsports .= ' '.$val.' '; } $cbsports .= ' '; echo $cbsports; } else { echo '请勾选后提交'; } ?>

1. 中文普通话
2. 日语
3. 朝鲜语
4. 西班牙语
5. 俄语
6. 德语
7. 法语
8. 英语
9. 少数民族语言
10. 中文闽南语
11. 中文粤语
12. 其它国家语言

'中文普通话', '11'=>'日语', '10'=>'朝鲜语', '9'=>'西班牙语', '8'=>'俄语', '7'=>'德语', '6'=>'法语', '5'=>'英语', '4'=>'少数民族语言', '3'=>'中文闽南语', '2'=>'中文粤语', '12'=>'其它国家语言', ); $lang = $_POST['lang']; if (is_array($lang)){ $cbsports = '

'; foreach ($CACHE['lang'] as $key => $val) { $cbsports .= '
1. '.$val.'
'; } $cbsports .= '

'; echo $cbsports; } else { echo '请勾选后提交'; } ?>

代码如下	复制代码
if(!emptyempty($lang)) { $expr = join(",", $lang); }

如果需要保存到数据库，按照下面的方式处理后，把$expr的值存储即可。

代码如下	复制代码
if(!emptyempty($lang)) { $expr = join(",", $lang); }

The original array can be regenerated after processing like this when displaying.

The code is as follows

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代码如下	复制代码
$lang = explode(',',$row(lang));

$lang = explode(',',$row(lang));

Note: Arrays can be stored directly using serialize() and unserialize(), but the fields must be of text type, which is not ideal.

Example 3: You need to delete multiple records at the same time, or modify multiple records at the same time

Key Points:

1. Add [] to the name in the front-end form, such as:
2. The backend accepts: $id = $_POST [id] [$i]; $i is the loop variable in for. When $i is the same, $_POST [id] [$i] and $_POST [name ] [$i] is a one-to-one correspondence;

1. Front-end form:

The code is as follows

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For the selected operation:

             
                                                                                                                                                                                                                                                                                                                                               
& Lt; th scope = "color" & gt; theme & lt;/th & gt;


                                                                                                                                                                                                        



                                                                                                                                                                                                                                                                                                                                                                        
                                                                                           
                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                               
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                          
& Lt; td & gt; & lt; select name = "Check []" & gt; & lt; switch name = "vo.check" & gt;
                                                                                                                                                                                                                                未审核
                            审核
                           
                            未审核
                            审核
                           
                   
               
               
           

onclick="checkAll()" /> Select all	Campus	Room	Contact number	Repair time	Review	Repair status	{$vo.id}	{$vo.topic}	{$vo.xiaoqu}	{$vo.room}	{$vo.pname}	{$vo.phone}	{$vo.create_time|date='Y-m-d H:i:s',###}	未修                             任务已下                             已修                                                         未修                             任务已下                             已修                                                         未修                             任务已下                             已修

       

二，服务端处理代码
 

 代码如下

代码如下

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/** * 批量修改状态 */ public function updateList() { $result = false; for($i = 0; $i < count ( $_POST [id] ); $i ++) { $id = $_POST [id] [$i]; $check = $_POST [check] [$i]; $status = $_POST [status] [$i]; // 保存登录信息 $Repair = M ( 'Repair' ); $data ['id'] = $id; $data ['check'] = $check; $data ['status'] = $status; $result = $Repair->save ( $data );         }                 if (false !== $result) {             $this->success ( '修改成功！' );         } else {             $this->error ( '修改失败!' );         }     }

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/** * * Modify status in batches ​​*/     public function updateList() {         $result = false;         for($i = 0; $i < count ( $_POST [id] ); $i ++) {                         $id = $_POST [id] [$i];             $check = $_POST [check] [$i];             $status = $_POST [status] [$i];                         // 保存登录信息             $Repair = M ( 'Repair' );

            $data ['id'] = $id;

            $data ['check'] = $check;