PHP_ICONV_API     416 ext/iconv/iconv.c PHP_ICONV_API php_iconv_err_t php_iconv_string(const char *in_p, size_t in_len,
PHP_ICONV_API     100 ext/iconv/php_iconv.h PHP_ICONV_API php_iconv_err_t php_iconv_string(const char * in_p, size_t in_len, char **out, size_t *out_len, const char *out_charset, const char *in_charset);