PHP implements symmetric encryption and decryption

This article mainly introduces the simple symmetric encryption and decryption methods implemented by PHP. It summarizes the common PHP symmetric encryption and decryption operation methods in the form of examples. Friends in need can refer to the following

The examples in this article describe Simple symmetric encryption and decryption method implemented in PHP. Share it with everyone for your reference, the details are as follows:

Method 1: YII’s own encryption method

/**
* 加密
* @var string [要加密的值]
*/
$secretKey = "wwj";
$data = $res['u_id'];
$encryptedData = Yii::$app->getSecurity()->encryptByPassword($data, $secretKey);

/**
* 解密
* @var [type] [加密前的值]
*/
$aid = $req->get('uid');
$secretKey = "wwj";
$uid = Yii::$app->getSecurity()->decryptByPassword($aid,$secretKey);

Method 2:

/**
 * 安全URL编码
 * @param type $data
 * @return type
 */
function encode($data) {
 return str_replace(array('+', '/', '='), array('-', '_', ''), base64_encode(serialize($data)));
}
/**
* 安全URL解码
* @param type $string
* @return type
*/
function decode($string) {
 $data = str_replace(array('-', '_'), array('+', '/'), $string);
 $mod4 = strlen($data) % 4;
 ($mod4) && $data .= substr('====', $mod4);
 return unserialize(base64_decode($data));
}

Method 3:

#

/**
* 加密
* @param [type] $code [description]
* @return [type]  [description]
*/
public static function encrypt($code)
{
 return urlencode(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5("key"), $code, MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND))));
}
/**
 * 解密
 * @param [type] $code [description]
 * @return [type]  [description]
 */
public static function decrypt($code)
{
 return urldecode(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5("key"), base64_decode($code), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND)));
}

Method 4:

/**
* 简单对称加密
* @param string $string [需要加密的字符串]
* @param string $skey [加密的key]
* @return [type]   [加密后]
*/
function encode($string = '', $skey = 'cxphp')
{
  $strArr = str_split(base64_encode($string));
  $strCount = count($strArr);
  foreach (str_split($skey) as $key => $value)
  $key < $strCount && $strArr[$key].=$value;
  return str_replace(array(&#39;=&#39;, &#39;+&#39;, &#39;/&#39;), array(&#39;O0O0O&#39;, &#39;o000o&#39;, &#39;oo00o&#39;), join(&#39;&#39;, $strArr));
}

/**
* 简单对称解密
* @param string $string [加密后的值]
* @param string $skey [加密的key]
* @return [type]   [加密前的字符串]
*/
function decode($string = '', $skey = 'cxphp')
{
  $strArr = str_split(str_replace(array('O0O0O', 'o000o', 'oo00o'), array('=', '+', '/'), $string), 2);
  $strCount = count($strArr);
  foreach (str_split($skey) as $key => $value)
   $key <= $strCount && isset($strArr[$key]) && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];
  return base64_decode(join(&#39;&#39;, $strArr));
}

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