Literals
-----
<?php

<<<'STR'
STR;
<<<STR
STR;

<<<'STR'
A
B
STR;
<<<STR
A
B
STR;

<<<'STR'
a\nb$c
STR;
<<<STR
a\\nb\$c
STR;

<<<STR
a$b
{$c->d}
STR;

call(
    <<<STR
A
STR
    , <<<STR
B
STR
);

function test() {
    <<<STR
Foo
STR;
    <<<STR
    Bar
STR;
}
-----
<<<'STR'
STR;
<<<STR
STR;
<<<'STR'
A
B
STR;
<<<STR
A
B
STR;
<<<'STR'
a\nb$c
STR;
<<<STR
a\\nb\$c
STR;
<<<STR
a{$b}
{$c->d}
STR;
call(<<<STR
A
STR
, <<<STR
B
STR
);
function test()
{
    <<<STR
Foo
STR;
    <<<STR
    Bar
STR;
}