Examples for the release of League\Csv 8.0.0

fetchAssoc-iterator.php

<?php

use League\Csv\Reader;

$formatter = function (array $row) {
  $row['create_at'] = new DatetimeImmutable($row['create_at']);
  
  return $row;
};

$reader = Reader::createFromPath('/path/to/file.csv');
$iterator = $reader->fetchAssoc(0, $formatter); //$iterator is a Iterator
foreach ($iterator as $data) {
    echo $row['create_at']->format('Y-m-d H:i:s'); //because this is a DateTimeImmutable object
}

fetchPairs-generator.php

<?php

use League\Csv\Reader;

$reader = Reader::createFromPath('/path/to/file.csv');
$iterator = $reader->fetchPairs(); //$iterator is a Generator
foreach ($iterator as $firstname => $lastname) {
    echo $firstname, ' -> ', $lastname, PHP_EOL;
    //display 'john -> doe'
}

$reader = Reader::createFromPath('/path/to/file.csv');
$arr = $reader->fetchPairsWithoutDuplicates(); //$arr is an array
foreach ($arr as $firstname => $lastname) {
    echo $firstname, ' -> ', $lastname, PHP_EOL;
    //display 'john -> doe'
}