Passing a function return result into a foreach loop
<p>Out of curiosity, are the two options below functionally equivalent?</p>

<pre><code>$array_variable = function_that_creates_an_array();
foreach($array_variable as $a){
    do_something()
}
</code></pre>

<p>vs.</p>

<pre><code>foreach(function_that_creates_an_array() as $a){
    do_something()
}
</code></pre>

<p>Just want to make sure I'm not calling the function on every iteration or anything dumb like that.</p>

<p>Thanks!</p>
