cannot create mssql.so on ubuntu 16.04 and php5.6

https://g3n1k.wordpress.com/2016/10/03/cannot-create-mssql-so-on-ubuntu-16-04-and-php5-6/

using php5.6 with freetds installed, and use ubuntu server 16.04
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install apache2 mysql-server php5.6 php5.6-mbstring php5.6-mcrypt php5.6-mysql php5.6-xml php5.6-cli libapache2-mod-php5.6 php5.6-gd freetds-common freetds-bin unixodbc php5.6-sybase php5.6-odbc cifs-utils php5.6-curl
how i know which mssql not working ???
try with phpinfo
sudo nano /var/www/html/info.php
# paste this code
<?php phpinfo(); ?>
open with browser, but i can find mssql there
try with php code
sudo nano /var/www/html/ms.php
# paste this code
<?php
$connection = mssql_connect('mssql-host', 'mssql-user', 'mssql-pass');
if (!$connection) { die('Unable to connect!'); }
if (!mssql_select_db('mssql-db', $connection)) { die('Unable to select database!');}
$result = mssql_query('SELECT * FROM CAPACITY_INFO');
while ($row = mssql_fetch_array($result)) { var_dump($row); }
mssql_free_result($result);
?>
# then try
php /var/www/html/ms.php
success try with tsql
cannot find mssql.so in /usr/lib/php/20131226/
ls /usr/lib/php/20131226/ | grep mssql
 how to solve
# download the mssql.so
# this mssql get from ubuntu server 64 bit and php 5.6
https://drive.google.com/open?id=0BxV3_TI0LIeYT2pzVzBXRG1sVWM

#upload to your server
scp mssql.so user@server:/home/youruserhome

# move mssql.so to /usr/lib/php/20131226/
sudo mv /home/youruserhome/mssql.so /usr/lib/php/20131226/

# create mssql.ini
sudo nano sudo /etc/php/5.6/mods-available/mssql.ini

# insert this code
extension=mssql.so
# save and close

# copy config mssql.ini 
cd /etc/php/5.6/apache2/conf.d
sudo ln -s /etc/php/5.6/mods-available/mssql.ini 20-mssql.ini
cd /etc/php/5.6/cli/conf.d
sudo ln -s /etc/php/5.6/mods-available/mssql.ini 20-mssql.ini

# restart service apache2
sudo service apache2 restart
test again with phpinfo and script