NetBeans. Disable error checking underline

Question

How to disable error checking in NetBeans 6.9.1? It is very annoying to have red line in the source code.

This is similar to NetBeans - Turn off - wavy red underlines -

Answer 1

Netbeans has a vast array of settings but this might do it. Try changing the drop down labelled "Wave Underlined" to "None":

Update:

Since I don't do PHP development I wasn't originally aware of the PHP plugin for Netbeans. You can find it listed in the plugins (Tools > Plugins) for Netbeans and should provide a much better environment for PHP work, with, I'm assuming, better PHP parsing and syntax highligting.