Convert a csv file to an array

csv_to_array.php

/**
 * Convert a comma separated file into an array.
 *
 * @param string $filename Path to the CSV file
 * @param string[]|bool $header An array used for the keys for an associative array. If set to TRUE then the first row of the file is used as the header. If set to FALSE then a numbered array is used instead.
 * @param string $delimiter The separator used in the file
 * @return string[][]
 * @link http://gist.github.com/385876
 * @author Jay Williams <http://myd3.com/>
 * @copyright Copyright (c) 2010, Jay Williams
 * @license http://www.opensource.org/licenses/mit-license.php MIT License
 */
function csv_to_array($filename, $header = true, $delimiter = ',') {
	$data = [];
	if (file_exists($filename) && is_readable($filename)) {
		if (($handle = fopen($filename, 'r')) !== false) {
			while (($row = fgetcsv($handle, 1000, $delimiter)) !== false) {
				if ($header) {
					if ($header === true) {
						$header = $row;
					} else {
						$data[] = array_combine($header, $row);
					}
				} else {
					$data[] = $row;
				}
			}
			fclose($handle);
		}
	}
	return $data;
}