openssl_spki_export_challenge

Function • Params and return types changed in PHP 8.0

Exports the challenge associated with a signed public key and challenge.

PHP 5.3-5.5
PHP 5.6
Added
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

openssl_spki_export_challenge Function synopsis

openssl_spki_export_challenge(string $spki): string|false

Parameters

$spki

Typestring

Expects a valid signed public key and challenge

Return value

Typestring|false

Returns the associated challenge string or false on failure.

Changes to the openssl_spki_export_challenge Function

PHP 8.0

  • Return type added: string|false
  • Parameter type added for parameter #1 ($spki): string
- openssl_spki_export_challenge($spki)
+ openssl_spki_export_challenge(string $spki): string|false

PHP 5.6

  • Function added

openssl_spki_export_challenge Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported 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 Yes
PHP 5.5Unsupported No
PHP 5.4Unsupported No
PHP 5.3Unsupported No