Arrows instead of normal tabs

I don’t know what happens with my file but now it shows me arrows instead of tabs. How can I fix that?

A snippet: https://www.dropbox.com/s/r5ubq8mw6rtoo8i/index.php?dl=1

To fix - use spaces instead of tabs…

Kidding. I’m not sure I understand what you’re meaning is, the arrow signifies a tab.

Ahh… I thought tab is the long dash, not the arrow.