PHP Modify an Array within an Array -

i created array , put array inside array. modify array, code never modify it.
here create part:

$arr_row_name = array(); for($nrow=0;$nrow < $numrows;$nrow++) {     $arr_slot_name = array();     for($nsp=0;$nsp < $numservprovider + 1;$nsp++)     {         $arr_slot_name[] = "closed";     }     //add slot row.......     $arr_row_name[] = $arr_slot_name; } 

here part try access array , modify it.

$arr_row_length = count($arr_row_name); for($x=0;$x<$arr_row_length;$x++) {     $arr_slot_name = $arr_row_name[$x];     $arr_slot_length = count($arr_slot_name);     for($slot=0;$slot<$arr_slot_length;$slot++)     {         $arr_slot_name[$slot] = "open";     }            } 

in second bit of code, change:

$arr_slot_name = $arr_row_name[$x]; 

to:

$arr_slot_name = &$arr_row_name[$x]; 

the way have it, making copy of $arr_row_name[$x] $arr_slot_name ... in second option, assigning reference , able change original ...