php - strip multiple trailing dashes and numbers from string -


i want strip trailing dashes , numbers file name.

filename: filename-01-1 , filename-01

my code works fine when file name in second format.

rtrim(preg_replace("/\d+$/","",$filename),'-')

also tried 

rtrim(preg_replace('/[0-9]+/',"",$filename),'-')

any appreciated.

preg_replace("/(-|\d+)*$/",'', $filename);

explaination

(-|\d+) # match "-" literally or digit *       # match previous group 0 or more times  $       # end of string

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