preg_replace

[Tandem]

Hey guys, i'm having a problem using preg_replace:

 

echo preg_replace('[^a-z0-9\-]+', "", strtolower(str_replace(" ", "-", $line[0])));

 

$line[0] is a string that could be pretty much anything. I want to replace any spaces with a dash, set it to lower case, and then remove anything that isn't a letter, number or dash.

 

The above is what i have thought would be correct, but it seems to just remove everything.

 

I can't figure out what i'm doing wrong.

 

Any help appreciated.

 

Thanks.

[effigy]

PREG requires delimiters: /[^a-z0-9\-]+/