help 错误信息是utf8 to ucs2 conversion failed on this string

提交一个按钮后，反馈信息是
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error.More information about this error may be available in the server error log.
--------------------------------------------------------------------------------Apache/2.0.64 (Win32) Server at localhost Port 80
然后到log里看到如下:
(22)Invalid argument: utf8 to ucs2 conversion failed on this string: REDIRECT_QUERY_STRING=c=search&m=similartrades_list&Search=SX_Reg&SelectContent=Classification%20No.%20is\xa3\xba1;%20Search%20content%20is:google;%20Search%20mode%20is:English;%20Search%20type%20is:Adding%20letters%20in%20random%20position;Reducing%20letters;Changeing%20letters;Changing%20order;Identical;Partially%20Identical;20%25%20similar&IntCls=1&QunCode=&Content=google&SearchMode=English&selectClass=
[Fri Jun 15 13:46:42 2012] [error] [client 127.0.0.1] (22)Invalid argument: couldn't create child process: 22: php-cgi.exe
[Fri Jun 15 13:46:42 2012] [error] [client 127.0.0.1] (22)Invalid argument: couldn't spawn child process: C:/php/php-cgi.exe
上谷歌查了一下，说是因为有中文字，可我输入的查询内容是西文'google',刚接触php,求高手指点。