PHP MCRYPT不断抛出模块初始化失败警告 - PHP MCRYPT keeps throwing Module initialization failed Warning

PHP MCRYPT keeps throwing Module initialization failed Warning

每次尝试运行m_decrypt时，都会抛出以下错误：

Warning: mcrypt_get_key_size(): Module initialization failed in /var/www/milo/system/encryption/common.php on line 51 Warning: mcrypt_get_block_size(): Module initialization failed in /var/www/milo/system/encryption/common.php on line 54 Warning: mcrypt_decrypt(): Module initialization failed in /var/www/milo/system/encryption/common.php on line 55

以下是驱动这一切的代码：

class encrpt
{
    protected $data;
    protected $key = "JUST A KEY";
    protected $cipher = "MCRYPT_SERPENT_256";
    protected $mode = "MCRYPT_MODE_CBC";
    public function m_encrypt($data)
    {
        return (string) 
         base64_encode(
          mcrypt_encrypt(
           $this->cipher,
           substr(md5($this->key),0,mcrypt_get_key_size($this->cipher, $this->mode)),
           $data,
           $this->mode,
           substr(md5($this->key),0,mcrypt_get_block_size($this->cipher, $this->mode))
          )
         );
    }
    public function m_decrypt($data)
    {
        return (string)
          mcrypt_decrypt(
           $this->cipher,
           substr(md5($this->key),0,mcrypt_get_key_size($this->cipher, $this->mode)),
           base64_decode($data),
           $this->mode,
           substr(md5($this->key),0,mcrypt_get_block_size($this->cipher, $this->mode))
          );
    }
}

我不知道我错过了什么。我的php-mcrypt模块是否已损坏或缺少依赖项？我正在运行PHP 5.3

好的，解决了这个问题。我把常量放错了。我改变了我班的变量，比如：

protected $cipher = "rijndael-256";
protected $mode = "cbc";

希望这能帮助人们避免陷入困境！！

protected $cipher = MCRYPT_SERPENT_256;
protected $mode = MCRYPT_MODE_CBC;

这些都是常量-不要使用引号。