Instalar drivers de Microsoft PHP para SQL Server en Ubuntu 16.04

En este tutorial veremos cómo instalar PHP para SQL Server, en este ejemplo usaremos la versión 7.0, si se desea la versión 7.2 sólo es reemplazar, usaré Ubuntu 16.04 pero  puede funcionar con otras versiones.

sudo su 
add-apt-repository ppa:ondrej/php -y 
apt-get update 
apt-get install php7.0 php7.0-dev php7.0-xml -y --allow-unauthenticated

Prerequisitos:

sudo su 
curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add -

#Download appropriate package for the OS version
#Choose only ONE of the following, corresponding to your OS version

#Ubuntu 14.04
curl https://packages.microsoft.com/config/ubuntu/14.04/prod.list > /etc/apt/sources.list.d/mssql-release.list

#Ubuntu 16.04
curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list > /etc/apt/sources.list.d/mssql-release.list

#Ubuntu 17.10
curl https://packages.microsoft.com/config/ubuntu/17.10/prod.list > /etc/apt/sources.list.d/mssql-release.list

exit
sudo apt-get update
sudo ACCEPT_EULA=Y apt-get install msodbcsql17
# optional: for bcp and sqlcmd
sudo ACCEPT_EULA=Y apt-get install mssql-tools
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
source ~/.bashrc
# optional: for unixODBC development headers
sudo apt-get install unixodbc-dev

Drivers PHP para Microsoft SQL Server:

sudo pecl install sqlsrv
sudo pecl install pdo_sqlsrv
sudo su
echo extension=pdo_sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/30-pdo_sqlsrv.ini
echo extension=sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/20-sqlsrv.ini
exit

Apache:

sudo su
apt-get install libapache2-mod-php7.0 apache2
a2dismod mpm_event
a2enmod mpm_prefork
a2enmod php7.0
echo "extension=pdo_sqlsrv.so" >> /etc/php/7.0/apache2/conf.d/30-pdo_sqlsrv.ini
echo "extension=sqlsrv.so" >> /etc/php/7.0/apache2/conf.d/20-sqlsrv.ini
exit

Reiniciar apache

sudo service apache2 restart

Fuente:

https://docs.microsoft.com/en-us/sql/connect/php/installation-tutorial-linux-mac?view=sql-server-2017#installing-the-drivers-on-ubuntu-1604-and-1710

https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server?view=sql-server-2017