List key signatures

# gnupg_listsignatures

(PECL gnupg >= 0.5)

gnupg_listsignatures — List key signatures

### Description

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

### Parameters

`identifier`

  The gnupg identifier, from a call to gnupg_init() or gnupg.

`keyid`
  The key ID to list signatures for.

### Return Values

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

### Examples

Example #1 Procedural gnupg_listsignatures() example

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

Example #2 OO gnupg_listsignatures() example

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