How to use PHP to encrypt and decrypt cookies

This article mainly introduces the method of implementing cookie encryption in PHP, involving the encryption, decryption and setting of cookies in PHP. It has certain reference value. Friends in need can refer to the following

Examples of this article How to implement cookie encryption in PHP. The specific implementation method is as follows:

The code is as follows:

<?php
class Cookie
{
    /**
     * 解密已经加密了的cookie
     * 
     * @param string $encryptedText
     * @return string
     */
    private static function _decrypt($encryptedText)
    {
        $key = Config::get(&#39;secret_key&#39;);
        $cryptText = base64_decode($encryptedText);
        $ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
        $iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
        $decryptText = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $cryptText, MCRYPT_MODE_ECB, $iv);
        return trim($decryptText);
    }
    /**
     * 加密cookie
     *
     * @param string $plainText
     * @return string
     */
    private static function _encrypt($plainText)
    {
        $key = Config::get(&#39;secret_key&#39;);
        $ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
        $iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
        $encryptText = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $plainText, MCRYPT_MODE_ECB, $iv);
        return trim(base64_encode($encryptText));
    }
    /**
     * 删除cookie
     * 
     * @param array $args
     * @return boolean
     */
    public static function del($args)
    {
        $name = $args[&#39;name&#39;];
        $domain = isset($args[&#39;domain&#39;]) ? $args[&#39;domain&#39;] : null;
        return isset($_COOKIE[$name]) ? setcookie($name, &#39;&#39;, time() - 86400, &#39;/&#39;, $domain) : true;
    }
    /**
     * 得到指定cookie的值
     * 
     * @param string $name
     */
    public static function get($name)
    {
        return isset($_COOKIE[$name]) ? self::_decrypt($_COOKIE[$name]) : null;
    }
    /**
     * 设置cookie
     *
     * @param array $args
     * @return boolean
     */
    public static function set($args)
    {
        $name = $args[&#39;name&#39;];
        $value= self::_encrypt($args[&#39;value&#39;]);
        $expire = isset($args[&#39;expire&#39;]) ? $args[&#39;expire&#39;] : null;
        $path = isset($args[&#39;path&#39;]) ? $args[&#39;path&#39;] : &#39;/&#39;;
        $domain = isset($args[&#39;domain&#39;]) ? $args[&#39;domain&#39;] : null;
        $secure = isset($args[&#39;secure&#39;]) ? $args[&#39;secure&#39;] : 0;
        return setcookie($name, $value, $expire, $path, $domain, $secure);
    }
}

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