php - Explode array and set as associative with default values? -

0i have string:

01, 02, 03, 04, 05, 06, 07, 08, 09 

and need convert in associative array numbers keys , values set 0

array(    "01" => 0,    "02" => 0,    etc ) 

i've found function array_walk if try use it: http://phpfiddle.org/main/code/5z2-bar

$string = "01, 02, 03, 04, 05, 06, 07, 08, 09"; $days = explode(",", $string);  $assdays = array();  function associate($element)  {     $assdays[$element] = 0; }  echo "<pre>"; print_r(array_walk($days, 'associate')); echo "</pre>"; 

doesn't work. i'm sure problem don't pass values function associate don't know how do.

use array_fill_keys:

$assdays = array_fill_keys($days, 0);