Description:
------------
PHP generates a warning inside a class destructor when you try to read a file, because apparently it cannot resolve relative paths by the time when the destructor is called for referenced objects.

When the open_basedir config is commented out, only the "include" directive resolves the relative path; the other file-reading methods fail.

When open_basedir is in effect, it causes all the methods to fail, including the "include" directive.

The following issue is demonstrated at:
http://test.kneetoe.com/foo.php
http://test.kneetoe.com/foo.php.txt
(alternatively with more checks):
http://test.kneetoe.com/foo2.php
http://test.kneetoe.com/foo2.php.txt

I recommend that class destructors get executed before the ability to resolve relative paths gets unloaded.

http://test.kneetoe.com/phpinfo.php

Reproduce code:
---------------
[httpd.conf]:
php_admin_value open_basedir /home/test/www

[/home/test/www/bar.html]:
Bar!

[/home/test/www/foo.php]:
class Foo {
    function __destruct() {
        $relative = 'bar.html';
        $absolute = "/home/test/www/$abs";
        echo "Absolute 'include': ";
        include $absolute;
        echo "Relative 'include': ";
        include $relative;
        echo "Absolute 'readfile': ";
        readfile($absolute);
        echo "Relative 'readfile': ";
        readfile($relative);
    }
}
print "<h2>Non-referenced (immediate destruction):</h2>";
new Foo;
print "<h2>Referenced (delayed destruction):</h2>";
$a = new Foo;

Expected result:
----------------
Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!

Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!


Actual result:
--------------
[[[open_basedir commented out]]]:

Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!

Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': 

Warning:  readfile(bar.html) [function.readfile]: failed to open stream: No such file or directory in /home/test/www/foo.php on line 19



[[[open_basedir in effect]]]:

Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!

Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include': 

Warning:  Foo::__destruct() [function.--destruct]: open_basedir restriction in effect. File(./bar.html) is not within the allowed path(s): (/home/test/www) in /home/test/www/foo.php on line 13



Warning:  Foo::__destruct(bar.html) [function.--destruct]: failed to open stream: Operation not permitted in /home/test/www/foo.php on line 13



Warning:  Foo::__destruct() [function.include]: Failed opening 'bar.html' for inclusion (include_path='.:/usr/local/lib/php') in /home/test/www/foo.php on line 13

Absolute 'readfile': Bar!
Relative 'readfile': 

Warning:  readfile() [function.readfile]: open_basedir restriction in effect. File(bar.html) is not within the allowed path(s): (/home/test/www) in /home/test/www/foo.php on line 19



Warning:  readfile(bar.html) [function.readfile]: failed to open stream: Operation not permitted in /home/test/www/foo.php on line 19