php - How do I ignore empty lines in this regex? -


I'm trying to figure out how to ignore blank lines with spaces, but any content No. I have the following 

  ^ (\ s *) SetEnv

which I am looking for properly, but it is only empty space with empty space Mail

then 

  set also matches blah // match //  

  ^ (\ h *) SetEnv

or 

  (? M) ^ (\ h *) set enve

\ h horizontal only White matches -Space


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