What is the difference between iconv and mb_convert_encoding in php?

Why can I convert a string encoded as gb18030 to UTF-8 through iconv? Use mbconvertencoding for gb2312 encoding. Why can I use iconv to convert a string encoded as gb18030 to UTF-8 and use mb ConvertWhy not encoding? Use mb encoded as gb2312 ConvertEncoding.

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Why can I use iconv to convert a string encoded as gb18030 to UTF-8 and use mbConvertWhy not encoding? Use mb encoded as gb2312ConvertEncoding.

Mbstring does not have the gbk/gb18030 encoding name. You can use cp936 instead (in fact, cp936 cannot completely overwrite gb18030, but it can overwrite the characters in the GBK character set, so there is no problem in general ).

Both iconv and mbstring are databases for multi-byte character processing, but the underlying implementation is different.