(PECL gnupg >= 0.5)
gnupg_deletekey — Delete a key from the keyring
$identifier, string $key, bool $allow_secret): bool
identifiergnupg 标识符，由对 gnupg_init() 或 gnupg 的调用生成。
keyThe key to delete.
allow_secretIt specifies whether to delete secret keys as well.
成功时返回 true， 或者在失败时返回 false。
示例 #1 Procedural gnupg_deletekey() example
<?php
$res = gnupg_init();
gnupg_deletekey($res, "8660281B6051D071D94B5B230549F9DC851566DC");
?>示例 #2 OO gnupg_deletekey() example
<?php
$gpg = new gnupg();
$gpg->deletekey("8660281B6051D071D94B5B230549F9DC851566DC");
?>