转自：http://www.info110.com/webserver/in27238-1.htm

cd /root/lamp/php-5.2.3/ext/mysqli
#####进入到mysqli的目录。
再用phpize生成configure文件:
/usr/local/php/bin/phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519
#./configure –prefix=/usr/local/mysqli \
–with-php-config=/usr/local/php/bin/php-config \
–with-mysqli=/usr/local/mysql/bin/mysql_config
make
make test
Installing shared extensions:     /usr/local/php/lib/php/extensions/debug-non-zts-20060613/
然后在/usr/local/lib/php.ini
加上一句：
extension=/usr/local/php/lib/php/extensions/debug-non-zts-20060613/mysqli.so
重新启动apache即可看到已经加载mysqli成功。 .