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    EventHttp::setCallback

    (PECL event >= 1.4.0-beta)

    EventHttp::setCallback — Sets a callback for specified URI

    Descrizione

    public EventHttp::setCallback( string $path , string $cb , string $arg = ?): void

    Sets a callback for specified URI.

    Elenco dei parametri

    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.

    Valori restituiti

    Restituisce true in caso di successo, false in caso di fallimento.

    Esempi

    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();
    ?>

    Il precedente esempio visualizzerà qualcosa simile a:

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

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