ssl3_read_bytes:sslv3 alert certificate unknown

if($async){
    $type = STREAM_CRYPTO_METHOD_SSLv2_CLIENT | STREAM_CRYPTO_METHOD_SSLv23_CLIENT;
}else{
    $type = STREAM_CRYPTO_METHOD_SSLv2_SERVER | STREAM_CRYPTO_METHOD_SSLv23_SERVER;
}

if($async){
    $type = STREAM_CRYPTO_METHOD_SSLv2_CLIENT | STREAM_CRYPTO_METHOD_SSLv23_CLIENT | STREAM_CRYPTO_METHOD_SSLv3_CLIENT;
}else{
    $type = STREAM_CRYPTO_METHOD_SSLv2_SERVER | STREAM_CRYPTO_METHOD_SSLv23_SERVER | STREAM_CRYPTO_METHOD_SSLv3_SERVER;
}