Problem with digits < 08

Dear All,

I have been a happy Quanta user for years. I use Quanta via fish to my 
server, which has been migrated to RHEL5/PHP5. Something strange is 
happening in the IDE which is actually affecting the server. I have no 
idea what it is, but I will try to describe it.

In the ide, if I type in integers beginning with the two digits as 00 
through to 07, they are highlighted in aquamarine (#00FFFF). The server 
can see and use the integers in scripts and functions, and all is well.

However, if I try to use integers beginning with 08 and 09, they are 
highlighted in blue and the server cannot see and use them.

It's baffling - how on earth syntax highlighting in an IDE can affect 
what goes on on a server I would have thought impossible. Maybe it is, 
and maybe it's something about PHP5 I haven't figured out.

Can anybody shed light on this problem?