EventHttp::setCallback

(PECL event >= 1.4.0-beta)

EventHttp::setCallbackSets a callback for specified URI

说明

public EventHttp::setCallback ( string $path , string $cb [, string $arg ] ) : void

Sets a callback for specified URI.

参数

path

The path for which to invoke the callback.

cb

The callback callable that gets invoked on requested path . It should match the following prototype:

callback ([ EventHttpRequest $req = NULL [, mixed $arg = NULL ]] ) : void

req

EventHttpRequest object.

arg

Custom data.

arg

Custom data.

返回值

Returns TRUE on success. Otherwise FALSE.

范例

Example #1 EventHttp::setCallback() example

<?php
/*
 * Simple HTTP server.
 *
 * To test it:
 * 1) Run it on a port of your choice, e.g.:
 * $ php examples/http.php 8010
 * 2) In another terminal connect to some address on this port
 * and make GET or POST request(others are turned off here), e.g.:
 * $ nc -t 127.0.0.1 8010
 * POST /about HTTP/1.0
 * Content-Type: text/plain
 * Content-Length: 4
 * Connection: close
 * (press Enter)
 *
 * It will output
 * a=12
 * HTTP/1.0 200 OK
 * Content-Type: text/html; charset=ISO-8859-1
 * Connection: close
 *
 * 3) See what the server outputs on the previous terminal window.
 */

function _http_dump($req$data) {
    static 
$counter      0;
    static 
$max_requests 2;

    if (++
$counter >= $max_requests)  {
        echo 
"Counter reached max requests $max_requests. Exiting\n";
        exit();
    }

    echo 
__METHOD__" called\n";
    echo 
"request:"var_dump($req);
    echo 
"data:"var_dump($data);

    echo 
"\n===== DUMP =====\n";
    echo 
"Command:"$req->getCommand(), PHP_EOL;
    echo 
"URI:"$req->getUri(), PHP_EOL;
    echo 
"Input headers:"var_dump($req->getInputHeaders());
    echo 
"Output headers:"var_dump($req->getOutputHeaders());

    echo 
"\n >> Sending reply ...";
    
$req->sendReply(200"OK");
    echo 
"OK\n";

    echo 
"\n >> Reading input buffer ...\n";
    
$buf $req->getInputBuffer();
    while (
$s $buf->readLine(EventBuffer::EOL_ANY)) {
        echo 
$sPHP_EOL;
    }
    echo 
"No more data in the buffer\n";
}

function 
_http_about($req) {
    echo 
__METHOD__PHP_EOL;
    echo 
"URI: "$req->getUri(), PHP_EOL;
    echo 
"\n >> Sending reply ...";
    
$req->sendReply(200"OK");
    echo 
"OK\n";
}

function 
_http_default($req$data) {
    echo 
__METHOD__PHP_EOL;
    echo 
"URI: "$req->getUri(), PHP_EOL;
    echo 
"\n >> Sending reply ...";
    
$req->sendReply(200"OK");
    echo 
"OK\n";
}

$port 8010;
if (
$argc 1) {
    
$port = (int) $argv[1];
}
if (
$port <= || $port 65535) {
    exit(
"Invalid port");
}

$base = new EventBase();
$http = new EventHttp($base);
$http->setAllowedMethods(EventHttpRequest::CMD_GET EventHttpRequest::CMD_POST);

$http->setCallback("/dump""_http_dump", array(48));
$http->setCallback("/about""_http_about");
$http->setDefaultCallback("_http_default""custom data value");

$http->bind("0.0.0.0"8010);
$base->loop();
?>

以上例程的输出类似于:

a=12
HTTP/1.0 200 OK
Content-Type: text/html; charset=ISO-8859-1
Connection: close

参见

关注编程学问公众号