PHP Manual PHP Installation on Windows. Re Manual Configuration, pathing errors in IIS and ISAPI setup. Chris 1. 1 Oct 2. Oct 2. 00. 4 are both correct. Problem is not with PHP but with IIS mine is v. Open-Source-support-ticketing-system-OsTicket.jpg' alt='Php Mysqli Extension Is Missing Windows Root' title='Php Mysqli Extension Is Missing Windows Root' />I am trying to select data from a MySQL table, but I get one of the following error messages mysql On two recent installation attempts on iis6 on win2k3 i followed the php manual and windows configuration steps exactly and php would still not run. Installed PHP into C Program FilesPHP, and set environment variable PATH to path as stated. When selecting the installation of php. Disney Hercules Psx Iso Download. IIS Administrator, IIS would insert the path as I hope someone can report if a similar problem exists with IIS67. For the MySQLi functions to be available, you must compile PHP with support for the MySQLi extension. The MySQLi extension was introduced with PHP version 5.