Result Set

A League\Csv\ResultSet object represents the associated result set of processing a CSV document with a constraint builder. This object is returned from Statement::process execution.

Starting with version 9.6.0, the class implements the League\Csv\TabularDataReader interface.

Selecting records

Please header over the TabularDataReader documentation page for more information on the class features. If you require a more advance record selection, you should use a Statement or a FragmentFinder class to process the Reader object. The found records are returned as a ResultSet object.

Conversions

Json serialization

The ResultSet class implements the JsonSerializable interface. As such you can use the json_encode function directly on the instantiated object. The interface is implemented using PHP’s iterator_array on the ResultSet::getRecords method. As such, the returned JSON string data is affected by the presence or absence of column names.

use League\Csv\Reader;
use League\Csv\Statement;

$records = [
    ['firstname', 'lastname', 'e-mail', 'phone'],
    ['john', 'doe', 'john.doe@example.com', '0123456789'],
    ['jane', 'doe', 'jane.doe@example.com', '0123456789'],
];

$tmp = new SplTempFileObject();
foreach ($records as $record) {
    $tmp->fputcsv($record);
}

$reader = Reader::createFromFileObject($tmp)->setHeaderOffset(0);
$stmt = Statement::create()->offset(1)->limit(1);
$result = $stmt->process($reader);

echo '<pre>', PHP_EOL;
echo json_encode($result, JSON_PRETTY_PRINT), PHP_EOL;
//display
//[
//    {
//        "firstname": "jane",
//        "lastname": "doe",
//        "e-mail": "jane.doe@example.com",
//        "phone": "0123456789"
//    }
//]

The record offset is not preserved on conversion

To convert your CSV records to JSON you must be sure its content is UTF-8 encoded, using, for instance, the library CharsetConverter stream filter.

Other conversions

If you wish to convert your CSV document in XML or HTML please refer to the converters bundled with this library.