Manage php.ini for Joomla - upload limits, registered globals, finding php.ini and other mysteries.
You are installing Joomla and you get some red letter warnings in your recommended settings. Most notably Display Errors and Output buffering. Most of the time you can ignore this because Joomla will function anyway. But there are some modules and extensions that are a bit more particular. (Not to mention that some of us are just perfectionists and it bugs the heck out of us to see those red letters.
Most newbies don't know where to find the php.ini file or what to add to change to make these things go away. Here's some guidance on getting all the recommended settings in the "green". Mostly these apply to XAMPP and WAMP or other local computer installations, since commercial servers are more completely provisioned for CMS.