I am afraid I don't understand. When you open PHP file, there is no syntax highlighted? In this case is possible your file size exceeded limit for highlighting. Go to program settings / Direct edit button. Find and change value of HLUpToSize e.g. to 1000000 (size in bytes)
In case your file is highlighted with another highlighter, there can be several reasons: 1. you changed highlighter and PSPad remember it. Change it back to PHP 2. file is highlighter with HTML multihighlighter 3. you assign PHP (or your file) extension to another highlighter. Look on statusbar for syntax name. Go to highlighter settings, choose highlighter from statusbar and remove extension on the second tab -- <http://forum.pspad.com/read.php?2,59869,59870> PSPad freeware editor http://www.pspad.com
