如何验证PHP中的自签名证书？

Question

I want to use self-signed certificate. So I try this:

$context = stream_context_create([
    'ssl' => [
        'verify_peer' => true,
        'allow_self_signed' => true,
        'peer_fingerprint' => [
            'sha1' => 'bddad63a826ff53f15ffd4f2339fe573fc01321d',
            'md5' => 'a7fb0783ffdab99a866ba31e5e15f2e7',
        ],
    ]
]);

file_get_contents(
    'https://example.com:8095',
    false,
    $context
);

But anyway I get

"SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed'"

What should I do for fix this error? I don't want to turn verify_peer to false, because it's not secure. I just want to check certificate by fingerprint to ensure that I can trust this certificate.