Block statements
-----
<?php
echo "a";
{
}
{
    echo "b";
}
if ($c) {
    echo "c";
    {
        echo "d";
    }
}
-----
echo "a";
{
}
{
    echo "b";
}
if ($c) {
    echo "c";
    {
        echo "d";
    }
}