I’m using the NetBeans IDE. Normally, every PHP file in my project has code folds:

However, one PHP file in my project doesn’t have code folds:

The file has no syntax errors. I’ve tried restarting NetBeans and reopening the project and the folds still do not appear. What could it be?
More info:
- I’m using NetBeans IDE 7.0.1.
- The file’s extension is
.phplike all the PHP files in my project. - On another file which has the same content exactly, code folds appear.
Follow the following steps:
1) open netbeans
2) select tool => options
3) select Editor tab and General sub tab
4) and check code fold check box
Find attached image for detail.