Note: This manual is for osCommerce v4.
| Name | Recommended | Required |
| PHP version | 7.2.0 | 7.0.0+ |
| MySQL database | Yes | Yes |
| zLib PHP module | Yes | Yes |
| PHP memory limit | 256M | 128M |
| cURL PHP module | Yes | Yes |
| fopen PHP function | Yes | Yes |
| hash PHP function | Yes | Yes |
| XML PHP module | Yes | Yes |
| spl_autoload_register PHP function | Yes | Yes |
| JSON PHP module | Yes | Yes |
| GD Image module | Yes | Yes |
| Pathinfo-Support | Yes | Yes |
source from https://www.oscommerce.com/wiki/index.php?title=Server_Requirements