重新编译php，添加openssl参数
1，查看openssl是否安装

# yum list openssl 
# yum list openssl-devel

2，获取php编译时的参数

# /usr/local/php/bin/php -i | grep Command
Configure Command => './configure' '--prefix=/usr/local/php' '--with-config-file-path=/usr/local/php/etc' '--with-apxs2=/usr/sbin/apxs' '--with-mysql' '--enable-fpm'
Server API => Command Line Interface

3，添加openssl参数

./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-apxs2=/usr/sbin/apxs --with-mysql --enable-fpm --with-openssl=/usr/local/ssl/

或者直接

--with-openssl

4，安装php，重启php-fpm

# make && make install
# service php-fpm restart

5，检查openssl

phpinfo();