Simple symfony command to read a csv file in project root

command.php

<?php
/**
 * @param InputInterface  $input
 * @param OutputInterface $output
 *
 * @return int|null
 */
public function execute(InputInterface $input, OutputInterface $output)
{
    $file = $input->getArgument('file');
    $fileName = $this->getContainer()->get('kernel')->getRootDir() . DIRECTORY_SEPARATOR . "../$file";
    $output->writeln($fileName);
    if (($handle = fopen($fileName, "r")) !== FALSE) {
        while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
            // your csv line $data is an array, do whatever you want
        }
        fclose($handle);
    }

    return 0;
}