字符串加解密 - 大米CMS官网论坛，大米站长联盟，大米站长之家，大米开发者社区

//字符串加解密
function encrypt_decrypt($string, $action = 'encrypt')
{
$secret_key = 'key';
$secret_iv = 'iv';
$output = false;
$encrypt_method = "AES-256-CBC";
$key = hash('sha256', $secret_key);
$iv = substr(hash('sha256', $secret_iv), 0, 16);
if ($action == 'encrypt') {
$output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
$output = base64_encode($output);
} else if ($action == 'decrypt') {
$output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
}
return $output;
}

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