php openssl aes

<?php
    header('Content-Type: text/plain;charset=utf-8');
    $data = 'phpbest';
    $key = 'oScGU3fj8m/tDCyvsbEhwI91M1FcwvQqWuFpPoDHlFk='; //echo base64_encode(openssl_random_pseudo_bytes(32));
    $iv = 'w2wJCnctEG09danPPI7SxQ=='; //echo base64_encode(openssl_random_pseudo_bytes(16));
    echo '内容: '.$data."\n";

    $encrypted = openssl_encrypt($data, 'aes-256-cbc', base64_decode($key), OPENSSL_RAW_DATA, base64_decode($iv));
    echo '加密: '.base64_encode($encrypted)."\n";

    $encrypted = base64_decode('To3QFfvGJNm84KbKG1PLzA==');
    $decrypted = openssl_decrypt($encrypted, 'aes-256-cbc', base64_decode($key), OPENSSL_RAW_DATA, base64_decode($iv));
    echo '解密: '.$decrypted."\n";