Since PHP 4.3.0 it is possible to identify at runtime which iconv implementation is adopted by this extension.
ICONV_IMPL
ICONV_VERSION
Note: Writing implementation-dependent scripts with these constants is strongly discouraged.
Note:
Writing implementation-dependent scripts with these constants is strongly discouraged.
Since PHP 5.0.0, the following constants are also available:
ICONV_MIME_DECODE_STRICT
ICONV_MIME_DECODE_CONTINUE_ON_ERROR