PHP Manual: Revoke a key or subkey by generating and adding revocation signature

bool rnp_key_revoke(
    RnpFFI $ffi,
    string $key_fp,
    int $flags,
    array $options = ?
)

Note: you need to call rnp_save_keys to write updated keyring(s) out.

ffi

The FFI object returned by rnp_ffi_create.

key_fp

Key fingerprint.

flags

Currently must be 0.

options

An associative array with options.

Key	Data type	Description
`"hash"`	string	Set hash algorithm used during signature calculation.
`"code"`	string	Code reason for revocation code. Possible values: 'no', 'superseded', 'compromised', 'retired'. If not defined, then value 'no' will be used by default.
`"reason"`	string	Textual representation of the reason for revocation.

Returns true on success or false on failure.