title: Which one is best CSV or JSON in order to import big data (PHP)
body: <p>I'm trying to get a big number of data (about 3M rows) and I have only two options to do that.</p>
  
  <ol>
  <li>Call an API then recover the 3M JSON objects.</li>
  <li>Import a CSV file containing the 3M rows.</li>
  </ol>
  
  <p>I didn't test any of these solutions yet to tell which one is best in terms of speed.</p>