# gnupg_listsignatures

(PECL gnupg >= 0.5)

gnupg_listsignatures — List key signatures

### 说明

gnupg_listsignatures(resource `$identifier`, string `$keyid`): ?array

### 参数

`identifier`

  gnupg 标识符，由对 gnupg_init() 或 gnupg 的调用生成。

`keyid`
  The key ID to list signatures for.

### 返回值

On success, this function returns an array of key signatures. On failure, this function returns `null`.

### 示例

示例 #1 Procedural gnupg_listsignatures() example

`<?php
$res = gnupg_init();
$signatures = gnupg_listsignatures($res, "8660281B6051D071D94B5B230549F9DC851566DC");
print_r($signatures);
?>`

示例 #2 OO gnupg_listsignatures() example

`<?php
$gpg = new gnupg();
$signatures = $gpg->listsignatures("8660281B6051D071D94B5B230549F9DC851566DC");
print_r($signatures);
?>`
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