Json

estudo sobre json

• https://www.devmedia.com.br/trabalhando-com-json-em-php/26716
• https://www.taniarascia.com/how-to-use-json-data-with-php-or-javascript/
• https://www.tutorialrepublic.com/php-tutorial/php-json-parsing.php
• https://www.dyn-web.com/tutorials/php-js/json/decode.php
• https://www.dyn-web.com/tutorials/ajax/json.php

converte json para csv (vice-versa)

• http://blog.secaserver.com/2013/12/convert-csv-json-bash/
• http://blog.svnlabs.com/json2csv-convert-json-files-to-csv/#.VMf5kLtD958
• http://stackoverflow.com/questions/662859/converting-csv-xls-to-json