What is the best method for getting a database connection/object into a function in PHP?

Question

A couple of the options are:

$connection = {my db connection/object};

function PassedIn($connection) { ... }

function PassedByReference(&$connection) {         


        

Answer 1

function usingFunc() {
  $connection = getConnection();
  ...
}

function getConnection() {
  static $connectionObject = null;
  if ($connectionObject == null) {
    $connectionObject = connectFoo("whatever","connection","method","you","choose");
  }
  return $connectionObject;
}

This way, the static $connectionObject is preserved between getConnection calls.