you will find a file called php.ini
You can edit this file to turn on the display of errors when you are working with a new script and testing it. You should turn it back off when you are finished testing.Search for:
display_errors = OffChange to:
display_errors = On
It is going to be the second occurance of it that you want to change. It is not the one that is in the comments at the top that you want to change.