Php/docs/eventhttp.setcallback

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• EventHttp
• Sets a callback for specified URI

EventHttp::setCallback

(PECL event >= 1.4.0-beta)

EventHttp::setCallback — Sets a callback for specified URI

Description

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

Sets a callback for specified URI.

Parameters

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.

Return Values

Returns TRUE on success. Otherwise FALSE.

Examples

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 $s, PHP_EOL;    }    echo "No more data in the buffer\n";}function _http_about($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 <= 0 || $port > 65535) {    exit("Invalid port");}$base = new EventBase();$http = new EventHttp($base);$http->setAllowedMethods(EventHttpRequest::CMD_GET | EventHttpRequest::CMD_POST);$http->setCallback("/dump", "_http_dump", array(4, 8));$http->setCallback("/about", "_http_about");$http->setDefaultCallback("_http_default", "custom data value");$http->bind("0.0.0.0", 8010);$base->loop();?>

The above example will output something similar to:

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

See Also

• EventHttp::setDefaultCallback() - Sets default callback to handle requests that are not caught by specific callbacks