Description:
------------
If STDOUT and/or STDERR are closed, output by the php script cause the interpreter to exit immediately.

According to strace output, php tries to write to the closed STDOUT file handle, causing a "Bad file descriptor" error and exit of the interpreter:

[...]
close(1)                                = 0
[...]
write(1, "foo", 3)                      = -1 EBADF (Bad file descriptor)
close(0)                                = 0
close(2)                                = 0
[...]
exit_group(0)                           = ?
Process 19177 detached

Reproduce code:
---------------
<?php
fclose(STDOUT);
print "foo";
sleep(10);
?>

Expected result:
----------------
No output, php sleeping for 10 seconds.

Actual result:
--------------
php exits immediately, strace shows an "Bad file descriptor" on the write() try to STDOUT:

[...]
read(3, "<?php\nfclose(STDOUT);\n\nprint \"fo"..., 8192) = 51
read(3, "", 4096)                       = 0
read(3, "", 8192)                       = 0
close(3)                                = 0
munmap(0x2b1dce200000, 4096)            = 0
close(1)                                = 0
munmap(0x2b1dce202000, 4096)            = 0
write(1, "foo", 3)                      = -1 EBADF (Bad file descriptor)
close(2)                                = 0
close(0)                                = 0
munmap(0x2b1dce201000, 4096)            = 0
munmap(0x2b1dce1bf000, 266240)          = 0
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b1dce1bf000
setitimer(ITIMER_PROF, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
munmap(0x2b1dce1bf000, 266240)          = 0
brk(0xd36000)                           = 0xd36000
exit_group(0)                           = ?
Process 19196 detached