Looking for a free PHP 5 editor with color code [closed]

[m.sen89]

I'm currently using the old version of HTML kit for php/mysql, but it doesn't have color code support for php5, and, more importantly, mysqli. I was wondering if anybody knows of a free php5 editor (not a free trial, but the full free version). I would normally just use mysql instead of mysqli, but every time I try to connect to use mysql_connect(), it runs an error saying I should use mysqli instead.