PHP 上的 OpenSSL 问题 - 不同版本的不同行为

The following code runs on the development machine:

<?php
$key = "-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC0x+2RiQ+LCZNAUcl/Ecf1NrTr
lhjOiHaVC+w/y+UJevqVcDstD22OJGwT13B9T47OuQG9BmzcZQYLcShUMhVD/Owu
9+8PcK51EnBd0lym6+z/WixpnqfQonyKiqq5ytmYKUlUv39J8QQUI2geyvY9VpWS
wyNcFUs7wPl2zsLCPQIDAQAB
-----END PUBLIC KEY-----";

$data = "Hello, world!";

$key1 = openssl_get_publickey($key);
print_r ($key1);
echo "<p>";

$res = openssl_public_encrypt($data, $encrypted_data, $key1, OPENSSL_PKCS1_PADDING);

echo base64_encode($encrypted_data);

在我的开发机器上，此代码输出一个资源和一个编码字符串.我会在这里复制它，但当然它每次都会改变.在生产机器上，此代码产生资源编号和以下 PHP 错误:

PHP Warning:  openssl_public_encrypt(): Don't know how to get public key from this private key in C:xxx	est.php on line 15
PHP Warning:  openssl_public_encrypt(): key parameter is not a valid public key in C:xxx	est.php on line 15