error occurred in getting checkbox value

error occurred in getting checkbox value - Printable Version

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+--- Thread: error occurred in getting checkbox value (/showthread.php?tid=71670)

error occurred in getting checkbox value - kvanaraj - 09-11-2018

Code:
<input type="checkbox" id="mycheck2" name="certid[]"        

      value="2"  class="cbx" <?php echo set_checkbox($student2['certid'],'1', 

      $student2['certid']==2);?> >

Code:
A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 1

Filename: controllers/Users.php

Line Number: 258

Backtrace:

File: C:\xampp\htdocs\transcript2\application\controllers\Users.php

Line: 258

Function: _error_handler

File: C:\xampp\htdocs\transcript2\index.php

Line: 315

Function: require_once

i am using 7 checkbox . first checkbox value correctly inserted. remaining checkboxes wrongly inserted.

Code:
controller 

$certids = $this->input->post('certid');  //here you leave the [ ] out!

    $nocs = $this->input->post('noc'); 

    $result = array();

    foreach ($certids as $index=>$certid) 

  {

       $result[] = $certid . '_' . $nocs[$index];

    }

    $date = new DateTime("now");

    $today = $date->format('Y-m-d');

    foreach($result as $value)

        {

        list($certid,$noc) = explode ('_',$value);

         $insert = array();

        $insert[] = array(

            'appno' => $appno,

            'regno' => $regno,

           'certid' => $certid,

              'noc' => $noc,

              'date' => $today

                );       

        $this->load->model('user_Model');

        $this->User_Model->studreginsert($insert);         

       }

RE: error occurred in getting checkbox value - Pertti - 09-11-2018

That looks like code from view file, not from controller, however because you are using name="certid[]", it's likely that you are looping over 0-6 indexes, where POST variable only sends values that were checked, so it might only have 1 value in certid array, if only one box was ticked.

Check your POST data that comes in.

RE: error occurred in getting checkbox value - kvanaraj - 09-11-2018

(09-11-2018, 10:53 PM)Pertti Wrote: That looks like code from view file, not from controller, however because you are using name="certid[]", it's likely that you are looping over 0-6 indexes, where POST variable only sends values that were checked, so it might only have 1 value in certid array, if only one box was ticked.

Check your POST data that comes in.

controller file also attached.
output
Array
(
[0] => 1_2
[1] => 2_2
[2] => 3_2
[3] => 4_2
[4] => 5_2
[5] => 6_
[6] => 7_
)

RE: error occurred in getting checkbox value - Pertti - 09-12-2018

First, when you use input name="array[]", you can't really trust indexes, if you select first and third item from one array, and second and fourth item from second array, you get:

PHP Code:
$array1[
    0 => 'value for item 1',
    1 => 'value for item 3'
];

$array2[
    0 => 'value for item 2',
    1 => 'value for item 4'
]; 

So as fist thing, you ought to find a way to include related metadata (in your case, matching certid) somehow in the name/array that comes back.