CodeIgniter 3配置中的动态加密密钥

Question

我正在尝试遵循关于加密的CI 3文档的说明https://codeigniter.com/userguide3/libraries/encryption.html#setting-your-encryption-key我应用了该指令，但它不能像我想的那样做出漂亮的输出，这里是标准代码

$this->load->library('encryption');
$key = $this->encryption->create_key(16);
// Get a hex-encoded representation of the key:
$key = bin2hex($this->encryption->create_key(16));

// Put the same value in your config with hex2bin(),
// so that it is still passed as binary to the library:
$config['encryption_key'] = hex2bin(<your hex-encoded key>);

但是我收到了这个错误

如何解决此错误？或者我写了一些错误的代码？

Answer 1

如果使用加密类，则必须设置加密密钥。必须在不可分割的控制器上设置动态加密密钥。在config.php文件中设置加密密钥

//单个加密密钥
$ config [＆＃39; encryption_key＆＃39;] =＆＃39;＆＃39;;

//动态加密密钥 $这 - ＆GT;负载＆GT;库（＆＃39;加密＆＃39）; //在控制器中加载加密库

$ key = bin2hex（$ this-＆gt; encryption-＆gt; create_key（16））;

$ config [＆＃39; encryption_key＆＃39;] = hex2bin（）;