php - Algorithm to find the optimal way to use a hosting-space -


i have several 5gb hosting accounts , thousands of files.
want create small software will:

  • create several sub-folders in files folder
  • move best choices of files (based on sizes) inside sub-folder, reach 5gb limit in optimal way
  • then i'll upload each folder in separate 5gb account

i'm not native english speaker , cannot find correct algorithm in internet. can me on (what words search, name of such algorithm)? doesn't matter language is, i'm looking principle of sorting.

thank you


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