php - is it possible to replace different array value(s) with different keys from different array -

[1] => ooooooo [2] => ooooooo [3] => ooooooo [4] => ooooooo [5] => ------------empty [6] => ooooooo [7] => ooooooo [8] => ooooooo [9] => ooooooo [10] => ------------empty [11] => ooooooo [12] => ooooooo [13] => ------------empty [14] => ooooooo [15] => ooooooo 

replace array1 above: "------------empty" below array2, keeping keys of array1

[1] => xxxxx [2] => yyyyy [3] => zzzzz 

so asks me add explanation---a picture paint more thousand words(i believe?) heck should more. had wonderful time last christmas, hope did :)
result this:

maybe should it's necessity find , replace automaticlly--so no manual or individual inputs. each "---empty" possibly @ different position on every call

[1] => ooooooo [2] => ooooooo [3] => ooooooo [4] => ooooooo [5] => xxxxx [6] => ooooooo [7] => ooooooo [8] => ooooooo [9] => ooooooo [10] => yyyyy [11] => ooooooo [12] => ooooooo [13] => zzzzz [14] => ooooooo [15] => ooooooo 

well yes, can say:

array1[index] = array2[another_index]; 

but have careful 2 arrays contain same type indexes within size of arrays

i guess wanted is:

array1[5] = array2[1]; // replace '------------empty` 'xxxxx' array1[10] = array2[2]; // replace '------------empty` 'yyyyy'  array1[13] = array[3]; // replace '------------empty` 'zzzzz' 

note in programming languages, array indexes start @ 0 indexes should less 1.

here pseudo-code in loop:

int = 0; // index array1 int j = 0; // index array2 while( < array1.size )  {     if(array1[i] equals "------------empty" , j < array2.size)      {         array1[i] = array2[j];         increment j;     }     increment i; } 

edit:

based on comment, here php code in loop.

$size1 = count($array1); $size2 = count($array2); $i = 0; $j = 0; while($i < $size1) {     if($array1[$i] == "------------empty" && $j < $size2) {         $array1[$i] = $array2[$j];         $j = $j + 1;     }     $i = $i + 1; } 

if comparing objects should take @ this

here full running example