ereg_replace problem

[zevious]

I have a string that includes things such as:
[TRLR:1:FC:8]

The TRLR, 1, FC, 8 are variable.

I need to change that into something like:
[TRLR:0::0]

I'm trying to use ereg_replace to do this. This doesn't seem to work:
ereg_replace("/\[$mt:[0-9]🙁.*):[^{0]\]/","\[$mt:$k:$fc:$res\]",$var);}

This is just a test I am doing to try to learn regular expressions in this case. Once I figure out the basics I will write the code to do what I actually need..

What am I doing wrong here?

[Anon]

You're dropping the third term (FC in this case)? You need backreferences.

The ereg functions don't use the "/.../" that preg functions do. But it's probably better to leave them in and use preg_replace instead anyway :-)

Let me get the format straight, '[' and ']' surrounding four fields separated by ':'. The first field is supplied by $mt, the second is a digit, the third could be anything, and the last is a digit (you've got "not a zero" in your sample, but that would never match your sample string). YOu want to return exactly that only with the third field dropped. Easy:

preg_replace("/[$mt🙁\d):.+?🙁\d)]/",
"[$mt:\1::\2]",
$var)

[zevious]

Actually that works(after some modification) THANKS. I'm still a little unfamiliar with regex's. If I wanted to check for the existance of
[TRLR:1::8] or [TRLR:0::8] where the 8 can be anything BUT 0. Usually 1-9. The 1 and 0 are not relative either. I just need to know if that series of characters exist with the lasy digit being 1-9.

Here is my current statment (which doesn't catch the above):
if($res!=0 and preg_match("/[$mt:.+?:.+?:[1-9]]/",$lst[$v]["WD"])) $lst[$v]["WD"]=preg_replace("/[$mt:0🙁\d)🙁\d)]/",
"[$mt:\1:\2:$res]",$lst[$v]["WD"]);

What am I doing wrong?