stream_socket_client

Open Internet or Unix domain socket connection

 **stream_socket_client** string $address int $error_code string $error_message  $timeout int $flags  $context

Initiates a stream or datagram connection to the destination specified by . The type of socket created is determined by the transport specified using standard URL formatting: . For Internet Domain sockets (AF_INET) such as TCP and UDP, the portion of the parameter should consist of a hostname or IP address followed by a colon and a port number. For Unix domain sockets, the portion should point to the socket file on the filesystem. address``transport://target``target``address``target

Opmerking: > The stream will by default be opened in blocking mode. You can switch it to non-blocking mode by using . stream_set_blocking

addressAddress to the socket to connect to.

error_codeWill be set to the system level error number if connection fails.

error_messageWill be set to the system level error message if the connection fails.

timeout Number of seconds until the system call should timeout. By default, is used.

  `connect()`default_socket_timeout> **Opmerking:** > This parameter only applies when not making asynchronous

     connection attempts.

Opmerking: > To set a timeout for reading/writing data over the socket, use the , as the only applies while making connecting the socket. stream_set_timeout``timeout

flags Bitmask field which may be set to any combination of connection flags. Currently the select of connection flags is limited to (default), and . STREAM_CLIENT_CONNECT``STREAM_CLIENT_ASYNC_CONNECT``STREAM_CLIENT_PERSISTENT

context A valid context resource created with . stream_context_create

On success a stream resource is returned which may be used together with the other file functions (such as , , , , and ), false on failure. fgets``fgetss``fwrite``fclose``feof

On failure the and arguments will be populated with the actual system level error that occurred in the system-level call. If the value returned in is and the function returned false, it is an indication that the error occurred before the call. This is most likely due to a problem initializing the socket. Note that the and arguments will always be passed by reference. error_code``error_message``connect()``error_code``0``connect()``error_code``error_message

Voorbeeld: example

<?php
$fp = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30);
if (!$fp) {
    echo "$errstr ($errno)<br />\n";
} else {
    fwrite($fp, "GET / HTTP/1.0\r\nHost: www.example.com\r\nAccept: */*\r\n\r\n");
    while (!feof($fp)) {
        echo fgets($fp, 1024);
    }
    fclose($fp);
}
?>

Voorbeeld: Using UDP connection

Retrieving the day and time from the UDP service "daytime" (port 13) on localhost.

<?php
$fp = stream_socket_client("udp://127.0.0.1:13", $errno, $errstr);
if (!$fp) {
    echo "ERROR: $errno - $errstr<br />\n";
} else {
    fwrite($fp, "\n");
    echo fread($fp, 26);
    fclose($fp);
}
?>

Waarschuwing: > UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

Opmerking: > Depending on the environment, the Unix domain or the optional connect timeout may not be available. A list of available transports can be retrieved using . See for a list of built in transports. stream_get_transports

stream_socket_server``stream_set_blocking``stream_set_timeout``stream_select``fgets``fgetss``fwrite``fclose``feof

Vorige ← stream_socket_accept Volgende stream_socket_enable_crypto →

stream_socket_client

stream_socket_client

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