Exclude a few words from a simple regex in PHP -

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i'm categorizing few folders on drives , want weed out low quality files using regex (this works):

xvid|divx|480p|320p|divx|xvid|divx|xvid|xvid|divx|dvdscr|pdtv|pdtv|dvdrip|dvdrip|dvdrip

now filenames in high definition still have dvd or xvid in filenames 1080p, 720p, 1080i or 720i. need single regex match 1 above exclude these words 1080p, 720p, 1080i or 720i.

you can use negative lookahead this

^(?!.*(?:1080p|720p|1080i|720i)).*(?:xvid|divx|480p|320p|divx|xvid|divx|xvid|xvid|divx|dvdscr|pdtv|pdtv|dvdrip|dvdrip|dvdrip)

this match on search strings, fail if there 1080p|720p|1080i|720i in string.


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