[php-src] Issue #11399: PHP incorrectly closes file handles when used to replace STDIN/STDOUT/STDERR

Issue: https://github.com/php/php-src/issues/11399 Author: gnif ### Description The following code: ```php <?php fclose(STDIN); fclose(STDOUT); fclose(STDERR); fopen('/dev/null', 'r'); fopen('/dev/null', 'w'); fopen('/dev/null', 'w'); exec("dig +noall +answer -t ns -q 'www.google.com'", $out, $ret); file_put_contents('ret.txt', $ret . "\n"); ``` Resulted in exec failing with the return code 134 as seen in ret.txt PHP's garbage collection seems to have not taken into account that the file handles opened are now in use as stdin/stdout/stderr. Obviously this can be worked around by storing the result of fopen into some global vars, but IMO this is a bug. ### PHP Version PHP 8.2.6 ### Operating System Debian 11