Question

I want to make regular expression to the following string :

2004 aston….martin db9 31 m3.img

I want the pattern to match all the spaces and dots except the last dot (for the extension )
i did the following pattern

/\s{1,}|\.{1,}/

this pattern match all dots and spaces including the last dot how can i exclude the last dot from the string

Ok here is the code also ( PHP )

$file = "2004 aston....martin db9 31 m3.img";

echo preg_replace("/\s{1,}|\.{1,}/", "_", $file);

and the output is

2004_aston_martin_db9_31_m3_img

Answer 1

Your regex is equivalent to /\s+|\.+/

If you can use lookaheads, then you can do something like that:

/(\s+|\.+)(?=.*\.)/