Does referencing a variable in a php function help save memory?
<p>For example are the following two functions the same or not when one compares how memory is being managed:</p>

<pre><code>$hello = 'hello';

my_echo($hello);

//Better or worse than
my_echo_ref($hello);

//case 1, no referencing:
function my_echo($word) {
 echo $word;
} 

//case 2, referencing:
function my_echo_ref(&amp;$word) {
  echo $word;
}
</code></pre>
