post input correctly from 2D array of input type=checkbox in PHP

Question

I have an 2D array of form, method=POST, where I want to get the days on which a subject have classes using input type=checkbox.

<input type='text' name='subject[]' />
<label> <input type='checkbox' name='monday[]' value='M'>M</label>
<label> <input type='checkbox' name='tuesday[]' value='T'>T</label>
<label> <input type='checkbox' name='wednesday[]' value='W'>W</label>
<label> <input type='checkbox' name='thursday[]' value='Th'>Th</label>
<label> <input type='checkbox' name='friday[]' value='F'>F</label>
<label> <input type='checkbox' name='saturday[]' value='Sa'>Sa</label>
<input type='text' name='subject[]' />
<label> <input type='checkbox' name='monday[]' value='M'>M</label>
<label> <input type='checkbox' name='tuesday[]' value='T'>T</label>
<label> <input type='checkbox' name='wednesday[]' value='W'>W</label>
<label> <input type='checkbox' name='thursday[]' value='Th'>Th</label>
<label> <input type='checkbox' name='friday[]' value='F'>F</label>
<label> <input type='checkbox' name='saturday[]' value='Sa'>Sa</label>

and with the following inputs (2 rows): {Subject1, M} {Subject2 T, W} I am expecting that PHP will fetch the $_POST variable as:

  'subject' => 
    array (size=2)
      0 => string 'Subject1' (length=8)
      1 => string 'Subject2' (length=8)
  'monday' => 
    array (size=1)
      **1 => string 'M' (length=1)**
  'tuesday' => 
    array (size=1)
      0 => string 'T' (length=1)
  'wednesday' => 
    array (size=1)
      0 => string 'W' (length=1)

^result from var_dump($_POST); but it fetch it as:

'subject' => 
    array (size=2)
      0 => string 'Subject1' (length=8)
      1 => string 'Subject2' (length=8)
  'monday' => 
    array (size=1)
      **0 => string 'M' (length=1)**
  'tuesday' => 
    array (size=1)
      0 => string 'T' (length=1)
  'wednesday' => 
    array (size=1)
      0 => string 'W' (length=1)

what should I do to fetch the values correctly?

Y not use one array for all the days like <input type='checkbox' name='days[]' value='M'>M</label> ??? — Think Different
– Think Different, Commented May 19, 2014 at 9:57
if i use name='days[]' it results into ` 'days' => array (size=3) 0 => string 'M' (length=1) 1 => string 'T' (length=1) 2 => string 'W' (length=1)` — fearfox
– fearfox, Commented May 19, 2014 at 10:01

Manibharathi · Accepted Answer · 2014-05-19 09:58:26Z

0

Change all checkbox name as days[] and in your php file use this code $_POST['days']. this will returns all selected values.

answered May 19, 2014 at 9:58

Manibharathi

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2 Comments

fearfox Over a year ago

that will return the values as ` 'days' => array (size=3) 0 => string 'M' (length=1) 1 => string 'T' (length=1) 2 => string 'W' (length=1)` but the code snippet is only for one row. but the code is for 2D array of forms

Manibharathi Over a year ago

use this print_r($_POST['days']). vardump shows value and its datatype php.net/manual/en/function.var-dump.php.

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