(PECL gnupg >= 0.5)
gnupg_cleardecryptkeys — Removes all keys which were set for decryption before
$identifier): bool
成功时返回 true， 或者在失败时返回 false。
示例 #1 Procedural gnupg_cleardecryptkeys() example
<?php
$res = gnupg_init();
gnupg_cleardecryptkeys($res);
?>示例 #2 OO gnupg_cleardecryptkeys() example
<?php
$gpg = new gnupg();
$gpg->cleardecryptkeys();
?>