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
= ?): voidSets 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:-
req -
EventHttpRequest object.
-
arg -
Custom data.
-
-
arg -
Custom data.
Return Values
Returns true on success or false on failure.
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
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