예약 상수

Since PHP 4.3.0 it is possible to identify at runtime which iconv implementation is adopted by this extension.

*iconv* constants
Name	Type	Description
`ICONV_IMPL`	string	The implementation name
`ICONV_VERSION`	string	The implementation version

Note:
Writing implementation-dependent scripts with these constants is strongly discouraged.

Since PHP 5.0.0, the following constants are also available:

*iconv* constants available since PHP 5.0.0
Name	Type	Description
`ICONV_MIME_DECODE_STRICT`	integer	A bitmask used for iconv_mime_decode()
`ICONV_MIME_DECODE_CONTINUE_ON_ERROR`	integer	A bitmask used for iconv_mime_decode()