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?

Answer 1

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