CURLOPT_SSL_ENABLE_NPN
Constant • Added in PHP 7.0
CURLOPT_SSL_ENABLE_NPN is one of the accepted parameters for curl_setopt parameter #2.
CURLOPT_SSL_ENABLE_NPN — false to disable NPN in the SSL handshake (if the SSL backend
cURL is built to use supports it), which can be used to
negotiate http2.
Available as of PHP 7.0.7 and cURL 7.36.0, and deprecated as of cURL 7.86.0.
CURLOPT_SSL_ENABLE_NPN = 225;Changes to the CURLOPT_SSL_ENABLE_NPN Constant
PHP 7.0
- Constant added
CURLOPT_SSL_ENABLE_NPN Constant Availability
CURLOPT_SSL_ENABLE_NPN 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 | Yes |
| PHP 8.0Unsupported | Yes |
| PHP 7.4Unsupported | Yes |
| PHP 7.3Unsupported | Yes |
| PHP 7.2Unsupported | Yes |
| PHP 7.1Unsupported | Yes |
| PHP 7.0Unsupported | Yes |
| PHP 5.6Unsupported | No |
| PHP 5.5Unsupported | No |
| PHP 5.4Unsupported | No |
| PHP 5.3Unsupported | No |