What will be the output of the following PHP code ?

What will be the output of the following PHP code ?

<?php
    function TV($string)
    {
        echo "my favourite TV show is ".$string;
        function b()
        {
            echo " I am here to spoil this code";
        }
    }
    function b()
    {
        echo " I am here to spoil this code";
    }
    b();
    TV("Sherlock");
?>