New htmlentities() '$double_enocde' Param Question

I just need a clarification about the new "$double_encode" param for htmlentities() and htmlspecialchars(). Is it supposed to do as I expect it to do in the code below or am I misuderstanding its use? // Output: &lt; echo htmlentities('<', ENT_QUOTES, false); // Expected Output: &lt; // Actual Output: &amp;lt; echo htmlentities(htmlentities('<', ENT_QUOTES, false), ENT_QUOTES, false); Thanks, Chris