# gnupg_sign

(PECL gnupg >= 0.1)

gnupg_sign — Signs a given text

### 说明

gnupg_sign(resource `$identifier`, string `$plaintext`): string|false

Signs the given `plaintext` with the keys, which were set with gnupg_addsignkey before and returns the signed text or the signature, depending on what was set with gnupg_setsignmode.

### 参数

`identifier`

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

`plaintext`
  The plain text being signed.

### 返回值

On success, this function returns the signed text or the signature. On failure, this function returns `false`.

### 示例

示例 #1 Procedural gnupg_sign() example

`<?php
$res = gnupg_init();
gnupg_addsignkey($res,"8660281B6051D071D94B5B230549F9DC851566DC","test");
$signed = gnupg_sign($res, "just a test");
echo $signed;
?>`

示例 #2 OO gnupg_sign() example

`<?php
$gpg = new gnupg();
$gpg->addsignkey("8660281B6051D071D94B5B230549F9DC851566DC","test");
$signed = $gpg->sign("just a test");
echo $signed;
?>`
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