Use Mssql with PHP 7.3 on MacOsx

Download and Install Mssql Express
https://www.microsoft.com/en-us/sql-server/sql-server-editions-express

Install Mssql Client (Mssql Management Studio - SSMS)
https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-ver15

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

Install PHP modules
https://docs.microsoft.com/en-us/sql/connect/php/installation-tutorial-linux-mac?view=sql-server-ver15#installing-the-drivers-on-macos-sierra-high-sierra-and-mojave