php 7++加密解密

```

<?php

header('Content-Type: text/plain;charset=utf-8');

$data = 'level_img/15325853427068.png';

$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('qaFLGz3UfNk0NOdiGJEJav+okwpK3KSrrBZI+O8lHH4=');

$decrypted = openssl_decrypt($encrypted, 'aes-256-cbc', base64_decode($key), OPENSSL_RAW_DATA, base64_decode($iv));

echo '解密: '.$decrypted."\n";

?>

```