php - Upload partial file using form post -


i have html form user can attach file , upload server. file can quite large want able read first line, respond while parsing rest of file in background, if @ all. point of whole thing is, upload csv. read first line, send columns client, , can link columns in file standard ones in our database.

  1. upload file
  2. server reads first line before getting rest of file validate
  3. respond json browser user can link csv columns db fields
  4. continue file processing while user linking fields
  5. take user linking , import file

is possible without using html5 file api load partial or slice of file form submit?


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