How to install php extension using pecl for specific php version, when several php versions installed in system?

I have installed both php5.6 and php7.0 from PPA on Ubuntu according to this manual [http://lornajane.net/posts/2016/php-7-0-and-5-6-on-ubuntu][1] But I didn't get how to install extensions using `pecl` for php5.6 or php7.0. For example I have already installed version of `libevent` or `amqp` in php5.6. Now when I type `pecl install libevent` and my active php version is php7.0 (using `update-alternatives --set php /usr/bin/php7.0), `pecl` returns message that `libevent` already installed. But it was installed only for php5.6 (when this version was active) and now I want to do it for php7.0. Which commands could help me? **UPD** I have found this commands for switch pecl to php7.0 and packet them to executable bash scripts: #!/bin/bash sudo update-alternatives --set php /usr/bin/php7.0 sudo pecl config-set php_ini /etc/php/7.0/cli/php.ini sudo pecl config-set ext_dir /usr/lib/php/20151012/ sudo pecl config-set bin_dir /usr/bin/ sudo pecl config-set php_bin /usr/bin/php7.0 sudo pecl config-set php_suffix 7.0 and for php5.6 #!/bin/bash sudo update-alternatives --set php /usr/bin/php5.6 sudo pecl config-set php_ini /etc/php/5.6/cli/php.ini sudo pecl config-set ext_dir /usr/lib/php/20131226/ sudo pecl config-set bin_dir /usr/bin/ sudo pecl config-set php_bin /usr/bin/php5.6 sudo pecl config-set php_suffix 5.6 But they are not help, pecl still gives me `list` of already installed extensions to php5.6, even if I switched to php7. pecl list Installed packages, channel pecl.php.net: ========================================= Package Version State amqp 1.7.1 stable libevent 0.1.0 beta stats 1.0.3 stable It should be empty for php7.0 ! How to solve the problem? **UPD** For amqp I have just installed php-amqp package without using pecl. apt-get install php-amqp And libevent still not exists for php7. But I hadn't found a way to switch pecl installation between 5.6 and 7 version, so question is still open. [1]: http://lornajane.net/posts/2016/php-7-0-and-5-6-on-ubuntu