- define: documentation ( source)
<?php
// https://bugs.php.net/bug.php?id=71927
define('great','my');
$great=[1 => 'fantastic'];
$my='my value';
echo "This is ${great[1] }\n";
echo "This is ${ great[1]}\n";
echo "This is ${ great[1] }\n";
echo "This is ${great[1]}\n";