Sorry...
step1. you can find php_mysqli.dll
step2. and put that dll into c:\php\extensions\
step3. that folder is not available, create it. now our dll file is in
c:\php\extensions\php_mysqli.dll
step4. go to php.ini, i thought that is in c:\windows
step5. search 'extension_dir'
step6.
step1. you can find php_mysqli.dllstep2. and put that dll into
c:\php\extensions\step3. that folder is not available, create it. now our dll
file is in c:\php\extensions\php_mysqli.dllstep4. go to php.ini, i thought that
is in c:\windowsstep5. search "extension_dir"step6. after you found that y