CSV to JSON with PHP?

Well there is the json_encode() function, which you should use rather than building up the JSON output yourself. And there is also a function str_getcsv() for parsing CSV:

$array = array_map("str_getcsv", explode("\n", $csv));print json_encode($array);

You must however adapt the $array if you want the JSON output to hold named fields.

I modified the answer in the question to use the first line of the CSV for the array keys. This has the advantage of not having to hard-code the keys in the function allowing it to work for any CSV with column headers and any number of columns.

Here is my modified version:

function csvToJson($csv) {    $rows = explode("\n", trim($csv));    $data = array_slice($rows, 1);    $keys = array_fill(0, count($data), $rows[0]);    $json = array_map(function ($row, $key) {        return array_combine(str_getcsv($key), str_getcsv($row));    }, $data, $keys);    return json_encode($json);}

Some tips...

• If you have URL opening enabled for fopen() and wrappers, you can use fgetscsv().
• You can build an array of the CSV, and then convert it with PHP's native json_encode().
• The correct mime type for JSON is application/json.