php 开启exif扩展

cd php-5.6/ext/exif/
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make && make install
make test

vim /usr/local/php/etc/php.ini #编辑php.ini底部追加extension = exif.so
#重启php
/usr/local/php/bin/php -m #查看扩展是否安装成功