Trailing newlines in doc strings
-----
<?php

<<<'EOF'@@{ "\n\n" }@@EOF;
<<<'EOF'@@{ "\n\n\n" }@@EOF;
<<<'EOF'@@{ "\nFoo\n\n" }@@EOF;
<<<EOF@@{ "\n\$var\n\n" }@@EOF;

<<<'EOF'@@{ "\r\n\r\n" }@@EOF;
<<<'EOF'@@{ "\r\n\r\n\r\n" }@@EOF;
<<<'EOF'@@{ "\r\nFoo\r\n\r\n" }@@EOF;
<<<EOF@@{ "\r\n\$var\r\n\r\n" }@@EOF;

-----
array(
    0: Scalar_String(
        value:
    )
    1: Scalar_String(
        value:

    )
    2: Scalar_String(
        value: Foo

    )
    3: Scalar_Encapsed(
        parts: array(
            0: Expr_Variable(
                name: var
            )
            1: Scalar_EncapsedStringPart(
                value:

            )
        )
    )
    4: Scalar_String(
        value:
    )
    5: Scalar_String(
        value:

    )
    6: Scalar_String(
        value: Foo

    )
    7: Scalar_Encapsed(
        parts: array(
            0: Expr_Variable(
                name: var
            )
            1: Scalar_EncapsedStringPart(
                value:

            )
        )
    )
)