Instead of directly writing to stdout. This allows doing a print_r
into a string, without using output buffering.
The motivation for this is bug #67467: print_r() in return mode
will still dump the string to stdout (causing a potential information
leak) if a fatal error occurs.
of course we can try to refactor the current flow to make this error can
be catched safly.
but as 7.0.0 is releasing, I don't think a refactor is safe now. and
actually I don't see any gain to make this catchable.
so let's keep this be consistent with 5.6 and safe for now
# scan README.NEW-OUTPUT-API to get a grasp
# tree has been tagged with BEFORE_NEW_OUTPUT_API
#
# TODO:
# - improve existing output handlers
# - move zlib.output_compression cruft from SAPI.c to zlib.c
# - output_encoding handling was ambigious, resp. is undefined yet
# - more tests