php - Combine post values and remove empty -

i have 2 sets of arrays coming $_post. keys both numeric , count same, since come in pairs names , numbers:

$_post[names] (     [0] => first     [1] => second     [2] =>      [3] => fourth )  $_post[numbers] (     [0] => 10     [1] =>      [2] => 3     [3] => 3 ) 

now need combine two, remove each entry either values missing.

the result should like:

$finalarray (     [first] => 10     [fourth] => 3 ) 

post data dynamically created there might different values missing based on user input.

i tried doing like:

if (array_key_exists('names', $_post)) {         $names = array_filter($_post['names']);         $numbers = array_filter($_post['numbers']);          if($names , $numbers) {            $final = array_combine($names, $numbers);          }      } 

but can't seem filter correctly, since giving me error:

warning: array_combine(): both parameters should have equal number of elements

how using array_filter array_filter_use_both flag on?

<?php     $array1 = [         0 => "first",         1 => "second",         2 => "",         3 => "fourth",     ];      $array2 = [         0 => 10,         1 => "",         2 => 3,         3 => 3,     ];      var_dump(array_filter(array_combine($array1, $array2), function($value, $key) {         return $key == "" || $value == "" ? false : $value;     }, array_filter_use_both ));  /* output:  array(2) {   ["first"]=>   int(10)   ["fourth"]=>   int(3) } */