javascript - Build flat table from CSV files -

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i have 500 csv files in format:

indicatora_name.csv

         1900    1901    1902 ... norway  3      2        sweden  1      3       3 denmark 5      2       3     ...

indicatorb_name.csv

         1900    1901    1902 ... norway  1      3       4 sweden  1      2        iceland 1      6       3     ...
  • years in columns, countries in rows.
  • notice countries, years , values may differ between files.

i'd run through these files , make flat table (csv file) structure:

 country, year, indicatora_name, indicatorb_name, ... sweden, 1900, 1, 1 sweden, 1901, 3, 2 norway, 1900, 3, 1 ...

preferably in php or javascript i'm willing learn new.

you should code following code:

    $file = file_get_contents('file.csv');     $lines = explode("\n", $file); //lines     $years = explode(";", $lines[0]); //first line years, gives array of years     for($i = 1, $c = count($lines)-1; $i < $c; ++$i){ //iterate on lines (excluding years)         $linedata = explode(';', $lines[$i]); //array line         $country = $linedata[0]; //first line entry country         unset($linedata[0]);          $indicators = $linedata; //and rest indicators         query('insert data(country, year, indicatora_name) values(?,?,?)', $country, $year, $indicators[0]);     }

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