How do I use PHP in "Rewrite results" for a field in a view? In a view, I configured a file to "Rewrite the output of this field." In the text area I need to use PHP. Can this be done?
No, it cannot be done. You can write HTML code in the rewrite box. Please take a look at this if you need to write php code in Views: Views Custom Field
Although I would suggest you create a template to add any custom php code you require.