Supported Versions: PHP 5, PHP 7, PHP 8
Find the position of the first occurrence of a case-insensitive substring in a string
<?php stripos(string $haystack, string $needle, int $offset = 0): int|false
<?php         $response = ftp_raw($this->connection, 'HELP');



        return $this->isPureFtpdServer = stripos(implode(' ', $response), 'Pure-FTPd') !== false;

    }



    public function fileExists(string $path): bool
<?php             $path = $this->escapePath($path);

        }



        return ftp_rawlist($connection, $options . ' ' . $path, stripos($options, 'R') !== false) ?: [];

    }



    public function move(string $source, string $destination, Config $config): void