PHP Manual: Add a socket to the underlying reactor event listener

Description

public static bool Swoole\Event::add(
    mixed $sock,
    callable $read_callback,
    callable $write_callback = ?,
    int $flags = ?
)

Adds a socket to the underlying reactor event listener. This function can be used in both Server and Client modes.

Warning

A socket that has already been added cannot be added again. Use swoole_event_set to modify the corresponding callback functions and event types for the socket.

Parameters

sock: File descriptor, stream resource, sockets resource, or object.
read_callback: Callback function for readable events.
write_callback: Callback function for writable events.
flags: Event type mask (e.g. SWOOLE_EVENT_READ, SWOOLE_EVENT_WRITE or SWOOLE_EVENT_READ | SWOOLE_EVENT_WRITE).

Return Values

Returns true on success or false on failure.

Examples

Example #1 Swoole\Event::add example

<?php
$fp = stream_socket_client("tcp://www.qq.com:80", $errno, $errstr, 30);
fwrite($fp,"GET / HTTP/1.1\r\nHost: www.qq.com\r\n\r\n");

Swoole\Event::add($fp, function($fp) {
    $resp = fread($fp, 8192);
    Swoole\Event::del($fp);
    fclose($fp);
});
echo "Finish\n";
?>