class Someet

{

    

    //加密方法 $data 加密字符串

    public static function getencrypt($data){ 

      

      // 公钥加密  

      $encrypt_data = '';  

      //获取公钥 

      $pubkey = openssl_pkey_get_public(file_get_contents('someet_pub.key'));

      openssl_public_encrypt($data, $encrypt_data, $pubkey);  

      $encrypt_data = base64_encode($encrypt_data);  

      return $encrypt_data;  



    }

    



    //解密方法   $encrypt_data 获取的加密后的字符串

    public static function getdecrypt($encrypt_data)

    {

      //把解密的字符串里的，空格转换为+号

      $encrypt_data = str_replace(' ','+', $encrypt_data);

      // 私钥解密  

      $prikey =  openssl_pkey_get_private(file_get_contents('someet.key'));

      $encrypt_data = base64_decode($encrypt_data);  

      openssl_private_decrypt($encrypt_data, $decrypt_data, $prikey);  

      return $decrypt_data;  

    }



    

}



//使用

$sommet = new Someet();

//加密

$encrypt = $sommet->getencrypt($encryptkey);

//解密

$decrypt = $sommet->getdecrypt($decryptkey);

openssl genrsa -out rsa_private_key.pem 1024

openssl pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt -out private_key.pem

openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem

class Person

{

	public function age(int $age) : int

	{

		return $age;

	}

	

	public function name(string $name) : string

	{

		return $name;

	}

	

	public function isAlive(bool $alive) : bool

	{

		return $alive;

	}

}

declare( strict_type = 1 )

//Class

$book = new Publishers\Packt\Book();



//Function

echo Publishers/Packt/getBook();



//constants

echo Publishers\Packt\COUNT;

//Class

use Publishers\Packt\Book;



//Function

use function Publishers\Packt\getBook;



//const

use const Publishers\Packt\COUNT



$book = new Book();

echo getBook();

echo COUNT;

//非混合模式的use声明

//Class

use Publishers\Packt\{ Book, Ebook, Video}



//Function

use function Publishers\Packt\{ getBook, saveBook}



//const

use const Publishers\Packt\{COUNT , KEY}

//混合模式的use声明

//Class

use Publishers\Packt\{ 

Book, 

Ebook, 

Video,

function getBook,

function saveBook,

const COUNT,

const KEY

}

//复合模式的use声明

use Publishers\Packt\{ 

Paper\Book, 

Electronic\Ebook, 

Media\Video

}