Install PHP stats library on Ubuntu 16

Question

I'm trying to install the PHP statistics package on my Ubuntu 16.04 LTS server, and I'm stuck.

First off, config stuff:

$ apache2 -v
 Apache/2.4.18 (Ubuntu)

$ php -v
PHP 7.0.15-0ubuntu0.16.04.4 (cli) ( NTS )

$ pear -V
PEAR Version: 1.10.1

I have successfully added pear using apt-get as well as php-all-dev.

When I try to install the stats package with pecl, I get the following:

$ pecl install stats
pecl/stats is already installed and is the same as the released version 1.0.5

I have also added extension=stats.so to my php.ini and restarted apache.

But when I try to run any of the stats functions, I get the following error:

Fatal error: Uncaught Error: Call to undefined function stats_standard_deviation() in /var/www/html/testing/stats_library.php:14 Stack trace: #0 {main} thrown in /var/www/html/testing/stats_library.php on line 14

What am I missing?

Answer 1

I was able to successfully add the extension by adding the version to the install command like this:

$  pecl install stats-2.0.3

I then added extension=stats.so to my php.ini and restarted apache. Everything works now!