Can't connect to MySQL when using PHP

[bkfx]

I'm start MySQL with 'mysqld-opt --default-character-set=gbk'.
I can use mysql connect to MySQL,and query.
But I use PHP,it display:
Warning: MySQL Connection Failed: Can't initialize character set 28 (path: default) in 
....
Why???

WinMe+Apache 1.3.17(Win32)+PHP 4.04pl1+MySQL 3.23.33

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