I. Na początek
II.Instalacja i konfiguracja
III. Opis języka
IV. Bezpieczeństwo
V. Możliwości
VI. Opis funkcji
VII. Zend API
VIII. PHP API: Interfejs rozszerzeń
X. Dodatki

Manual PHP

Zapraszam do korzystania z zamieszczonego przeze mnie manuala php. Mam nadzieję, że ta jego kopia przyda się zarówno profesjonalnym programistą, jak i początkującym twórcą skryptów PHP.

Autorzy

Mehdi Achour,
Friedhelm Betz,
Antony Dovgal,
Nuno Lopes,
Philip Olson,
Georg Richter,
Damien Seguy,
Jakub Vrana,
I kilka innych

Redakcja:

Gabor Hojtsy,
Marcin Dąbrowski, Michał Grzechowiak, Leszek Krupiński, Adam Major, Paweł Paprota, Michał Pena, Sławomir Pucia, Jarek Tabor, Tomasz Wójtowicz,

stream_socket_recvfrom

(PHP 5)

stream_socket_recvfrom -- Receives data from a socket, connected or not

Description

string stream_socket_recvfrom ( resource socket, int length [, int flags [, string &address]] )

The function stream_socket_recvfrom() accepts data from a remote socket up to length bytes. If address is provided it will be populated with the address of the remote socket.

The value of flags can be any combination of the following:

Tabela 1. possible values for flags

STREAM_OOB Process OOB (out-of-band) data.
STREAM_PEEK Retrieve data from the socket, but do not consume the buffer. Subsequent calls to fread() or stream_socket_recvfrom() will see the same data.

Przykład 1. stream_socket_recvfrom() Example

<?php
/* Open a server socket to port 1234 on localhost */
$server = stream_socket_server('tcp://127.0.0.1:1234');

/* Accept a connection */
$socket = stream_socket_accept($server);

/* Grab a packet (1500 is a typical MTU size) of OOB data */
echo "Received Out-Of-Band: '" . stream_socket_recvfrom($socket, 1500, STREAM_OOB) . "'\n";

/* Take a peek at the normal in-band data, but don't comsume it. */
echo "Data: '" . stream_socket_recvfrom($socket, 1500, STREAM_PEEK) . "'\n";

/* Get the exact same packet again, but remove it from the buffer this time. */
echo "Data: '" . stream_socket_recvfrom($socket, 1500) . "'\n";

/* Close it up */
fclose($socket);
fclose($server);
?>

Notatka: If a message received is longer than the length parameter, excess bytes may be discarded depending on the type of socket the message is received from (such as UDP).

See also stream_socket_sendto(), stream_socket_client(), and stream_socket_server().


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