Postgresql Select rows where column = array

Question

This is a summary of what I am trying to do:

$array[0] = 1;
$array[1] = 2;

$sql = \"SELECT * FROM table WHERE some_id = $array\"

Obviously

Answer 1

   $array[0] = 1;
   $array[2] = 2;
   $arrayTxt = implode( ',', $array);
   $sql = "SELECT * FROM table WHERE some_id in ($arrayTxt)"