How to replace mcrypt in php

How to replace mcrypt with php: 1. Open the corresponding php file; 2. Find the original encryption and decryption code; 3. Use the "openssl_encrypt" and "openssl_decrypt" methods to replace it.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

php How to replace mcrypt?

Mcrypt encryption and decryption alternative in php7.4

Problem description

The mcrypt_encrypt and mcrypt_decrypt functions have been abandoned since PHP 7.1.0. The original project (php5. 6) The mcrypt_encrypt and mcrypt_decrypt functions used in php7.1 and later environments will prompt that the function cannot be found, and you need to use openssl_encrypt and openssl_decrypt instead.

Solution

********************Encryption*************** ********

        

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************************Decryption************ ************

        

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/** * 原解密方法 * @param $str * @param string $key * @return string */ function des_decrypt($str, $key='uK9pFn56') { $str = mcrypt_decrypt(MCRYPT_DES, $key, base64_decode($str), MCRYPT_MODE_ECB); $len = strlen($str); $block = mcrypt_get_block_size('des', 'ecb'); $pad = ord($str[$len - 1]); return substr($str, 0, $len - $pad); } var_dump(des_decrypt("BKG4i231OB0=")); //解密结果：123123

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