| curl | Curl connection interface |
| curl_download | Download file to disk |
| curl_escape | URL encoding |
| curl_fetch_disk | Fetch the contents of a URL |
| curl_fetch_memory | Fetch the contents of a URL |
| curl_fetch_stream | Fetch the contents of a URL |
| curl_options | List curl version and options. |
| curl_symbols | List curl version and options. |
| curl_unescape | URL encoding |
| curl_version | List curl version and options. |
| form_file | Upload files with form |
| handle | Create and configure a curl handle |
| handle_cookies | Extract cookies from a handle |
| handle_reset | Create and configure a curl handle |
| handle_setform | Create and configure a curl handle |
| handle_setheaders | Create and configure a curl handle |
| handle_setopt | Create and configure a curl handle |
| has_internet | Lookup a hostname |
| ie_get_proxy_for_url | Internet Explorer proxy settings |
| ie_proxy | Internet Explorer proxy settings |
| ie_proxy_info | Internet Explorer proxy settings |
| new_handle | Create and configure a curl handle |
| nslookup | Lookup a hostname |
| parse_date | Parse date/time |
| parse_headers | Parse response headers |