stream_socket_enable_crypto
(PHP 5 >= 5.1.0, PHP 7)
stream_socket_enable_crypto — Turns encryption on/off on an already connected socket
说明
$stream ,
bool $enable [,
int $crypto_type [,
resource $session_stream ]] ) :
mixed
Enable or disable encryption on the stream.
Once the crypto settings are established, cryptography can be turned on and off dynamically by passing TRUE or FALSE in the enable parameter.
参数
-
stream -
The stream resource.
-
enable -
Enable/disable cryptography on the stream.
-
crypto_type -
Setup encryption on the stream. Valid methods are
STREAM_CRYPTO_METHOD_SSLv2_CLIENTSTREAM_CRYPTO_METHOD_SSLv3_CLIENTSTREAM_CRYPTO_METHOD_SSLv23_CLIENTSTREAM_CRYPTO_METHOD_ANY_CLIENTSTREAM_CRYPTO_METHOD_TLS_CLIENTSTREAM_CRYPTO_METHOD_TLSv1_0_CLIENTSTREAM_CRYPTO_METHOD_TLSv1_1_CLIENTSTREAM_CRYPTO_METHOD_TLSv1_2_CLIENTSTREAM_CRYPTO_METHOD_SSLv2_SERVERSTREAM_CRYPTO_METHOD_SSLv3_SERVERSTREAM_CRYPTO_METHOD_SSLv23_SERVERSTREAM_CRYPTO_METHOD_ANY_SERVERSTREAM_CRYPTO_METHOD_TLS_SERVERSTREAM_CRYPTO_METHOD_TLSv1_0_SERVERSTREAM_CRYPTO_METHOD_TLSv1_1_SERVERSTREAM_CRYPTO_METHOD_TLSv1_2_SERVER
If omitted, the crypto_method context option on the stream's SSL context will be used instead.
-
session_stream -
Seed the stream with settings from
session_stream.
返回值
Returns TRUE on success, FALSE if negotiation has failed or 0 if there isn't enough data and you should try again (only for non-blocking sockets).
更新日志
| 版本 | 说明 |
|---|---|
| 5.6.0 | Introduce STREAM_CRYPTO_METHOD_ANY_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT, STREAM_CRYPTO_METHOD_ANY_SERVER, STREAM_CRYPTO_METHOD_TLSv1_0_SERVER, STREAM_CRYPTO_METHOD_TLSv1_1_SERVER, STREAM_CRYPTO_METHOD_TLSv1_2_SERVER. |
| 5.6.0 | The crypto_type is now optional. |
范例
Example #1 stream_socket_enable_crypto() example
<?php
$fp = stream_socket_client("tcp://myproto.example.com:31337", $errno, $errstr, 30);
if (!$fp) {
die("Unable to connect: $errstr ($errno)");
}
/* Turn on encryption for login phase */
stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
fwrite($fp, "USER god\r\n");
fwrite($fp, "PASS secret\r\n");
/* Turn off encryption for the rest */
stream_socket_enable_crypto($fp, false);
while ($motd = fgets($fp)) {
echo $motd;
}
fclose($fp);
?>
以上例程的输出类似于：
