PHPで「Fatal error: Class 'mysqli' not found」と出た時の対処法 ref: http://qiita.com/valbeat/items/1cc0075af808b6703691

file0.txt

Fatal error: Class 'mysqli' not found

file1.txt

$ vim /usr/local/lib/php.ini

file2.txt

;extension=php_mysqli.dll

file3.txt

extension=php_mysqli.dll

file4.txt

$ cd /usr/local/src/php-5.6.0
$ make clean
$ ./configure --enable-mbstring --with-apxs2=/usr/local/apache2/bin/apxs --enable-pdo --with-gd --with-png-dir=/usr/local --with-jpeg-dir=/usr/local --with-mysql --with-mysqli
$ make
$ make install