php - fwrite to STDERR resulting in error in executable script -

i have strange issue. in executable php script error happens, , have no idea why

warning: fwrite() expects parameter 1 resource, string given

i have following examples:

-rwxr-xr-x 1 root root    87 sep 10 16:55 test* -rw-r--r-- 1 root root    33 sep 10 17:10 test.php 

where file ./test is:

#!/usr/bin/php -q <?php fwrite(stderr, "test\n"); 

and file test.php (exact same, missing shebang):

<?php fwrite(stderr, "test\n"); 

i made tests on machine , it's behavior strange:

# ./test  <br /> <b>warning</b>:  fwrite() expects parameter 1 resource, string given  # php -q test.php  test  # php -r 'fwrite(stderr, "test\n");' test 

has idea why fwrite stderr not work (only) in executable php files?

php 5.4.28 (cli) (built: may 19 2014 15:39:12)

the error gone when use shebang #!/usr/local/bin/php. makes sense, since php compiled source.

but still don't understand why happens on other path. tried phpinfo using 'wrong' shebang , still php version 5.4.28 version, there aren't multiple installations.