why I can not encode and decode Chinese characters in iso-8859-1 encoding format but I can convert it just fine without any problems on utf8 format
...ahem, but because utf8 covers 1,112,064 codepoints, while iso-8859-1 only 255 and can barely handle European repertoire? You could make Perl let you know you are trying a dubious thing: 
use utf8;
use Encode;
encode( 'ISO-8859-1' , '這是一個測試', Encode::FB_CROAK );

...

"\x{9019}" does not map to iso-8859-1 at ...

In reply to Re: How to encode and decode chinese string to iso-8859-1 encoding format by vr
in thread How to encode and decode chinese string to iso-8859-1 encoding format by thanos1983

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