EventHttp::setCallback

(PECL event >= 1.4.0-beta)

EventHttp::setCallback — Sets a callback for specified URI

说明

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

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:

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

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
 

 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 ();
 ?>

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

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