How can I tell if return() was called from within the included file. The problem is that include() returns 'int 1', even if return() wasn't called. Here is an example...

included_file_1.php

<?php

return 1;

included_file_2.php

<?php

echo 'no return here, meep';

main.php

<?php

$ret = include('included_file_1.php');

// This file DID return a value, int 1, but include() returns this value even if return() wasn't called in the included file.
if ($ret === 1)
{
    echo 'file did not return anything';
}

var_dump($ret);

$ret = include('included_file_2.php');

// The included file DID NOT return a value, but include() returns 'int 1'
if ($ret === 1)
{
    echo 'file did not return anything';
}

var_dump($ret);