PHP heredocs with double quotes stop doxygen

[max1josef]

Describe the bug
PHP heredocs in the form $msg = <<<"EOD" (i.e. with double quotes) will stop doxygen from processing the remainder of the source file.

To Reproduce

<?php

/**
 * function with "heredoc"
 */

function hello()
{
    $msg = <<<"EOD"
Hello, World!
EOD;
    print($msg);
}

/**
 * this function is not documented by doxygen
 */

function foo()
{
    print("foo");
}

hello();
foo();

Expected behavior
Both functions should appear in the resulting documentation, but function foo() is omitted.
If you write:

• $msg = <<<EOD // herdoc without double quotes
  or
• $msg = <<<'EOD' // nowdoc

doxygen works as expected.

Version

C:\>doxygen --version
1.12.0 (c73f5d30f9e8b1df5ba15a1d064ff2067cbb8267)

Platform is Windows 10, 64bit, 22H2, Build 19045.4780

Additional context
Not a big deal, since $msg = <<<EOD and $msg = <<<"EOD" are equivalent (i.e. the double quotes are optional). But I prefer the syntax with double quotes, to explicitely distingiush heredocs from nowdocs (with single quotes).

[albert-github]

I've just pushed a proposed patch, pull request #11108 (including extended example)

[albert-github]

Code has been integrated in master on GitHub (please don't close the issue as this will be done at the moment of an official release).

[doxygen]

This issue was previously marked 'fixed but not released',
which means it should be fixed in doxygen version 1.13.0.
Please verify if this is indeed the case. Reopen the
issue if you think it is not fixed and please include any additional information
that you think can be relevant (preferably in the form of a self-contained example).