实例代码
```php
<?php
class Aes{
protected $key='';
protected $iv='';
/**
* @param $key
* @param $iv
* @return $this
* 配置 key iv
*/
public function instance($key,$iv){
$this->key=$key;
$this->iv=$key;
return $this;
}
/**
* @param $input
* @return string
* 加密
*/
public function encrypt($input)
{
$data = openssl_encrypt($input, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->iv));
$data = base64_encode($data);
return $data;
}
/**
* @param $input
* @return string
* 解密
*/
public function decrypt($input)
{
$decrypted = openssl_decrypt(base64_decode($input), 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->iv));
return $decrypted;
}
/**
* @param $hex
* @return string
* hex转换
*/
public function hexToStr($hex)
{
$string='';
for ($i=0; $i < strlen($hex)-1; $i+=2)
{
$string .= chr(hexdec($hex[$i].$hex[$i+1]));
}
return $string;
}
}
```
可以直接复制使用，php的aes加密类库
