Need to short or write code in better way [duplicate]

Question

I am not good with PHP coding, I need help with the following.

I have this in a loop:

$pageid = get_queried_object_id();

if (stripos($pageid, '1' )!=false){ 
    echo "$intro_sub_field_value_0";
}

elseif (stripos($pageid, '2' )!=false){
    echo "$intro_sub_field_value_1";
}

elseif (stripos($pageid, '3' )!=false){
    echo "$intro_sub_field_value_2";
}

elseif (stripos($pageid, '4' )!=false){
    echo "$intro_sub_field_value_3";
}

elseif (stripos($pageid, '5' )!=false){
    echo "$intro_sub_field_value_4";
}

elseif (stripos($pageid, '6' )!=false){
    echo "$intro_sub_field_value_5";
}

elseif (stripos($pageid, '7' )!=false){
    echo "$intro_sub_field_value_6";
}

elseif (stripos($pageid, '8' )!=false){
    echo "$intro_sub_field_value_7";
}

elseif (stripos($pageid, '9' )!=false){
    echo "$intro_sub_field_value_8";
}

else {
    echo "$intro_sub_field_value_0";
}

It's working fine but I need to short this code. So that if there are 5 or 50 or 100 or 1000 loop, i don't need to add or less.

Answer 1

$page_id = get_queried_object_id();
    for($counter = 1 ; $counter <= 100 ; $counter++) {
        if ($page_id == $counter) {
            $var_name = 'intro_sub_field_value_' . ($counter - 1);
            echo $$var_name;
            break;
        }
    }