PHP7.0 새로운 전역 상수
- IMG_WEBP (as of PHP 7.0.10)
- JSON_ERROR_INVALID_PROPERTY_NAME
- JSON_ERROR_UTF16
- PREG_JIT_STACKLIMIT_ERROR
- POSIX_RLIMIT_AS
- POSIX_RLIMIT_CORE
- POSIX_RLIMIT_CPU
- POSIX_RLIMIT_DATA
- POSIX_RLIMIT_FSIZE
- POSIX_RLIMIT_LOCKS
- POSIX_RLIMIT_MEMLOCK
- POSIX_RLIMIT_MSGQUEUE
- POSIX_RLIMIT_NICE
- POSIX_RLIMIT_NOFILE
- POSIX_RLIMIT_NPROC
- POSIX_RLIMIT_RSS
- POSIX_RLIMIT_RTPRIO
- POSIX_RLIMIT_RTTIME
- POSIX_RLIMIT_SIGPENDING
- POSIX_RLIMIT_STACK
- POSIX_RLIMIT_INFINITY
- ZLIB_ENCODING_RAW
- ZLIB_ENCODING_DEFLATE
- ZLIB_ENCODING_GZIP
- ZLIB_FILTERED
- ZLIB_HUFFMAN_ONLY
- ZLIB_FIXED
- ZLIB_RLE
- ZLIB_DEFAULT_STRATEGY
- ZLIB_BLOCK
- ZLIB_FINISH
- ZLIB_FULL_FLUSH
- ZLIB_NO_FLUSH
- ZLIB_PARTIAL_FLUSH
- ZLIB_SYNC_FLUSH