ListParser.php

<?php

declare (strict_types=1);
namespace OpenTelemetry\SDK\Common\Configuration\Parser;

class ListParser {
    private const DEFAULT_SEPARATOR = ',';
    
    /**
     * @param string|array $value
     */
    public static function parse($value) : array {
        if (is_array($value)) {
            return $value;
        }
        if (trim($value) === '') {
            return [];
        }
        return array_map(fn($value) => trim($value), explode(self::DEFAULT_SEPARATOR, $value));
    }

}