note 102638 modified in function.substr by danbrown

substr is case sensitive.  To make it case-insensitive, use something like:

<?php
if (substr($text,0,6)==strtoupper($find_me))
{
echo "Case insensitive $find_me detected.";
}
?>

--was--
substr is case sensitive.  To make it case-insensitive, use something like:

if (substr($text,0,6)==strtoupper($find_me))
{
echo "Case insensitive $find_me detected.";
}

http://php.net/manual/en/function.substr.php