CURLOPT_UPKEEP_INTERVAL_MS
Constant • Added in PHP 8.2
CURLOPT_UPKEEP_INTERVAL_MS — Some protocols have "connection upkeep" mechanisms. These mechanisms usually send some traffic
on existing connections in order to keep them alive. This option defines the connection upkeep interval.
Currently, the only protocol with a connection upkeep mechanism is HTTP/2. When the connection upkeep
interval is exceeded, an HTTP/2 PING frame is sent on the connection.
Defaults to CURL_UPKEEP_INTERVAL_DEFAULT
which is currently 60 seconds.
Available as of PHP 8.2.0 and cURL 7.62.0.
CURLOPT_UPKEEP_INTERVAL_MS = 281;Changes to the CURLOPT_UPKEEP_INTERVAL_MS Constant
PHP 8.2
- Constant added
CURLOPT_UPKEEP_INTERVAL_MS Constant Availability
CURLOPT_UPKEEP_INTERVAL_MS Constant Availability| PHP Version | Availability |
|---|---|
| PHP 8.5Future Release | Yes |
| PHP 8.4Upcoming Release | Yes |
| PHP 8.3Supported (Latest) | Yes |
| PHP 8.2Supported | Yes |
| PHP 8.1Security-Fixes Only | No |
| PHP 8.0Unsupported | No |
| PHP 7.4Unsupported | No |
| PHP 7.3Unsupported | No |
| PHP 7.2Unsupported | No |
| PHP 7.1Unsupported | No |
| PHP 7.0Unsupported | No |
| PHP 5.6Unsupported | No |
| PHP 5.5Unsupported | No |
| PHP 5.4Unsupported | No |
| PHP 5.3Unsupported | No |