CSV File Loader in PHP. The headers will be map as keys in collected CSV data.

CsvFileLoader.php

<?php

use Exception;
use Illuminate\Support\Collection;
use SplFileObject;

/**
 * CSV loader is a helper class to load data into Laravel Collection
 *
 * ----------------------------------------------------------------------------------------------------------------
 * $csvLoader = CsvFileLoader::loadFromUserImportStorage('file.csv');
 *
 * // Fetch data from CSV
 * $rows = $csvLoader->get();
 *
 * // It might be possible we have some invalid rows in CSV file
 * if ($csvLoader->hasInvalidRow()) {
 *      $invalidRows = $csvLoader->getInvalidRows();
 * }
 * ----------------------------------------------------------------------------------------------------------------
 *
 * @author Mohammed Mudassir Shaikh <hello@mudasir.me>
 * @license MIT
 */
class CsvFileLoader
{
    /** @var SplFileObject */
    protected $file;

    /** @var Collection */
    protected $rows;

    /** @var Collection */
    protected $invalidRows;

    /**
     * @param string $filePath
     */
    public function __construct(string $filePath)
    {
        $this->file = new SplFileObject($filePath);

        $this->rows = new Collection;
        $this->invalidRows = new Collection;

        $this->processFile();
    }

    /**
     * @param string $filePath
     * @return CsvFileLoader
     */
    public static function loadFromUserImportStorage(string $filePath)
    {
        return new self(storage_path("user-imports/$filePath"));
    }

    /**
     * @return Collection
     */
    public function get()
    {
        return $this->rows;
    }

    /**
     * @return Collection
     */
    public function getInvalidRows()
    {
        return $this->invalidRows;
    }

    /**
     * @return bool
     */
    public function hasInvalidRow()
    {
        return $this->invalidRows->isNotEmpty();
    }

    /**
     * @param array $row
     * @return bool
     */
    public function isRowEmpty(array $row)
    {
        return count($row) < 2 || empty($row[0]);
    }

    /**
     * Process the CSV file
     * @return void
     */
    protected function processFile()
    {
        $header = $this->file->fgetcsv();

        while (! $this->file->eof()) {
            if ($this->isRowEmpty($row = $this->file->fgetcsv())) {
                continue;
            }

            try {
                $this->rows[] = array_combine($header, $row);
            } catch (Exception $exception) {
                $this->invalidRows[] = $row;
            }
        }
    }
}