#下载
wget https://pecl.php.net/get/redis-5.2.2.tgz

tar xzvf redis-5.2.2.tgz

cd redis-5.2.2/      

 /usr/local/php/bin/phpize 

./configure --with-php-config=/usr/local/php/bin/php-config

 make

make install

vi /usr/local/php/lib/php.ini

增加
extension=redis.so