neiyou_user_web/public/test/encrypt_functions.php

<?php

function encryptLink($url) {
    $key = 'secret_key'; // 加密密钥
    $data = base64_encode($url);
    $encrypted = '';
    for ($i = 0; $i < strlen($data); $i++) {
        $encrypted .= chr(ord($data[$i]) ^ ord($key[$i % strlen($key)]));
    }
    return base64_encode($encrypted);
}

function decryptLink($encrypted) {
    $key = 'secret_key'; // 加密密钥
    $data = base64_decode($encrypted);
    $decrypted = '';
    for ($i = 0; $i < strlen($data); $i++) {
        $decrypted .= chr(ord($data[$i]) ^ ord($key[$i % strlen($key)]));
    }
    return base64_decode($decrypted);
}