php - Repeat array values -

i have array;

[1]=>   array(5) {     ["chid"]=>         string(1) "1"     ["chtext"]=>         string(9) "excellent"     ["chvotes"]=>         string(2) "13"     ["weight"]=>         string(1) "1"     ["colour"]=>         string(7) "#b3c7e0"   } 

the colour added array text field. array length colour @ fixed length of 4.

$poll = $entity->choice; // array $poll_colours = array(); // create new array colours $colours = $entity->field_poll_colours['und'][0]['value']; // value text field $poll_colours = explode(',', $colours); // explode comma  foreach($poll $key => $value) {   $poll[$key]['colour'] = $poll_colours[0];   $poll[$key]['colour'] = ltrim($poll[$key]['colour']);   unset($poll_colours[0]);   sort($poll_colours); } unset($poll_colours); 

what want achieve is, if length of array more 4, repeat colours (1-4).

desired result:

[1]=>   array(5) {     ["chtext"]=> "a"     ["colour"]=> "cyan"   } [2]=>   array(5) {     ["chtext"]=> "b"     ["colour"]=> "magenta"   } [3]=>   array(5) {     ["chtext"]=> "c"     ["colour"]=> "yellow"   } [4]=>   array(4) {     ["chtext"]=> "d"     ["colour"]=> "black"   } [5]=>   array(5) {     ["chtext"]=> "e"     ["colour"]=> "cyan" // repeat colour[1]   } [6]=>   array(5) {     ["chtext"]=> "f"     ["colour"]=> "magenta" // repeat colour[2]   } ... // repeat colour[3] ... // repeat colour[4] ... // repeat colour[1] etc... 

use modulus operator rotate through colours array.

$colour_count = count($poll_colours); $poll_colours = array_map('ltrim', $poll_colours); sort($poll_colours); foreach($poll $key => $value) {   $poll[$key]['colour'] = $poll_colours[$key % $colour_count]; }