Last updated: Wed, 26 Oct 2005

CLVI. Funzioni W32api

Introduzione

Questa è una generica API verso le DLL. In origine fu scritta per consentire l'accesso alle API Win32 dal PHP, sebbene si possa anche accedere a funzioni esportate da altre DLL.

Attualmente i tipi di dati supportati dal modulo sono i generici tipi PHP (strings, booleans, floats, integers e null) e i tipi definiti dall'utente tramite w32api_deftype().

Nota: Questo modulo è stato spostato nel repository PECL e non sarà più rilascio con il PHP dalla versione 5.1.0.

Avvertimento

Questo modulo è SPERIMENTALE. Ovvero, il comportamento di queste funzioni, i nomi di queste funzioni, in definitiva tutto ciò che è documentato qui può cambiare nei futuri rilasci del PHP senza preavviso. Siete avvisati, l'uso di questo modulo è a vostro rischio.

Requisiti

Questo modulo gira solo su sistemi Windows.

Installazione

Non è necessaria nessuna installazione per usare queste funzioni, esse fanno parte del core di PHP.

Configurazione di Runtime

Questa estensione non definisce alcuna direttiva di configurazione in php.ini

Tipi di risorse

Questo modulo definisce un solo tipo di risorsa utilizzata per i tipi di dati definiti dall'utente. Il nome i questa risorsa è "dynaparm".

Costanti predefinite

Queste costanti sono definite da questa estensione e sono disponibili solo se l'estensione è stata compilata nel PHP o se è stata caricata dinamicamente a runtime.

DC_MICROSOFT (integer)
DC_BORLAND (integer)
DC_CALL_CDECL (integer)
DC_CALL_STD (integer)
DC_RETVAL_MATH4 (integer)
DC_RETVAL_MATH8 (integer)
DC_CALL_STD_BO (integer)
DC_CALL_STD_MS (integer)
DC_CALL_STD_M8 (integer)
DC_FLAG_ARGPTR (integer)

Esempi

Nel seguente esempio si ottiene da quanto tempo il sistema è attivo ed il risultato viene visualizzato in una finestra.

Esempio 1. Ottenere il tempo di attività e visualizzarlo in una finestra


<?php

// Definizione delle costanti richieste, dati ottenuti da

// Visual Studio/Tools/Winapi/WIN32API.txt

define("MB_OK", 0);

 

// Carico il modulo

dl("php_w32api.dll");

 

// Registrazione della funzione GetTickCount da kernel32.dll

w32api_register_function("kernel32.dll",

                         "GetTickCount",

                         "long");

 

// Registrazione della funzione MessageBoxA da User32.dll

w32api_register_function("User32.dll",

                         "MessageBoxA",

                         "long");

 

// Ottiene il dato cercato

$ticks = GetTickCount();

 

// Converte in formato umano

$secs  = floor($ticks / 1000);

$mins  = floor($secs / 60);

$hours = floor($mins / 60);

 

$str = sprintf("You have been using your computer for:" .

                "\r\n %d Milliseconds, or \r\n %d Seconds" .

                "or \r\n %d mins or\r\n %d hours %d mins.",

                $ticks,

                $secs,

                $mins,

                $hours,

                $mins - ($hours*60));

     

// Visualizza la finestra con il bottone di OK

MessageBoxA(NULL,

            $str,

            "Uptime Information",

            MB_OK);

?>

Sommario
w32api_deftype -- ...) Definisce un tipo per l'uso con altre w32api_functions
w32api_init_dtype -- Crea un'istanza ai tipi di dati typename e li riempie con i valori forniti
w32api_invoke_function -- ....) Invoca la funzione funcname con gli argomenti passati dopo il nome della funzione
w32api_register_function -- Registra la funzione function_name dalla libreria con PHP
w32api_set_call_method -- Imposta il metodo di chiamata usato

w32api_deftype

vpopmail_set_user_quota

Last updated: Wed, 26 Oct 2005

add a note User Contributed Notes
Funzioni W32api

MagicalTux at FF dot st
16-Feb-2005 08:10


Answer to the note posted by me at nullflux dot com (see below)



The Win32 API *does* work in other versions of PHP than between 4.2.0 and 4.2.3. However the documented functions are not available. You will have to use the "win32" class to access functions. For an example, read Philip Soeberg's post just below.

Sami Fouad
23-Nov-2004 03:37


Here is a new link for the official page for the Windows API @ Microsoft's site:



http://tinyurl.com/5mupk

serdar_soydemir at hotmail dot com
30-May-2004 10:34


It seems that this extension will be replaced by FFI extension in PHP5. FFI stands for "Foreign Function Interface" and it's not limited by Windows API, but also supports Linux APIs. You may reach this extension's website at http://pecl.php.net/package/ffi . For Windows, you may try this code from commandline php.exe:



<?php

dl ("php_ffi.dll");



$windows = new ffi ("[lib='user32.dll'] int MessageBoxA( int handle, char *text, char *caption, int type );" );



echo $windows->MessageBoxA(0, "Message For You", "Hello World", 1);

?>

chris at ramsoft dot biz
18-May-2004 11:46


The win32 support appears to be pretty flaky in php. This of course is to be expected with an experimental extension. That being said, if you are having trouble using the win32 functionality you may want to look into creating a PHP extension instead.



We were having some problems interfacing PHP with a 3rd party dll. As such we created an extension which wraps the interface with the aforementioned dll. The solution was surprisingly quick and painless.

Because we use Delphi primarily we found the following extremely useful and easy to use. http://users.chello.be/ws36637/php4delphi.html#download



more info here:

http://php.us.themoes.org/manual/en/zend.creating.php

me at nullflux dot com
20-Apr-2004 04:27


The w32api extension -does not- work on versions of php that are not between 4.2.0 and 4.2.3. This is mentioned on the individual function's manual pages, but not on the extension's main page. Perhaps I'm just missing something, but if you want to interact with the Win32 API via PHP you have to use an outdated version, or just not bother with it at all.

Philip Soeberg
19-Jan-2004 08:09


In response to post by Jan Kleinsorge.



To get the proper windows system uptime, one should use the Performance Monitoring system... GetTickCount is limited to 49.7 days, as the result is a dword.



<?php

if (!dl("php_w32api.dll")) {

  echo "Unable to load php_w32api.dll";

  exit;

}



$api = new win32;

$api->registerfunction("bool QueryPerformanceCounter (float &lpPerformanceCount) From kernel32.dll");

$api->registerfunction("bool QueryPerformanceFrequency (float &lpPerformanceFrequency) From kernel32.dll");



$api->QueryPerformanceCounter($a);

$api->QueryPerformanceFrequency($b);

$c = $a/$b;

$days = floor($c / 86400);

echo gmstrftime("System uptime is $days Days, %H Hr, %M Min, %S Sec<br>", $c);

?>



The above snippet will return the true uptime for an unlimited time for a windows OS. (Disregarding the fact that windows needs reboot every 10 days or so :))

A tiny dange though is the lack of 64bit variable types in php.. (the "float &lpPerformanceCount" should be "long long &lpPerformanceCount") .. Nevertheless.. It works :)



Philip S.

Jan Kleinsorge
02-Jan-2004 05:55


Or google for "win32.hlp". Almost every API-function is listed in there.

Sami Fouad
12-Dec-2003 09:33


http://msdn.microsoft.com/library/ contains functions for use with this extension. 





Beware! The menu system is very dense, and confusing at first if you don't know where your going. 





Luckily for you I am going to add how to get there in this note. ;)





Windows Development > Development Guides > Windows API > Windows API Reference





Enjoy.

23-Aug-2003 01:42


The small, unofficial documentation is now available here http://wobster.mynnga.de/w32api.txt .

The old link from the post above is dead.



Note that the W32API doesn't seem to be under development anymore. E-Mails to the author stayed unanswered.

If you really have to use it, just some hints here: There are often problems concerning Apache webservers. This extension doesn't seem to work with mod_php.

I used the API on IIS5 with PHP as CGI. Additionally the IUSR_<hostname> (that's the user IIS runs php.exe by default) might need additional rights to be able to call certain API-functions.

silver_dragoon77 at hotmail dot com
27-Jun-2003 12:03


hi



for phpgtk users, who might want to add some sound to their apps, here is the code, assuming ding.wav is in the script's directory



$api = new win32;

$api->registerfunction("long sndPlaySound (string a, int b) From winmm.dll");

$api->sndPlaySound("ding.wav", 0);



you can use the big win32.hlp file containing the win32 api reference to get some other multimedia functions



regards

wobble at gmx dot de
31-Mar-2003 01:09


I played a bit around with the W32API. Here is some code that actually works with the current release of W32API.

The interface changed completely, so all documentation about this extension is out-dated. While the old release

just implemented "plain" functions, the current version offers a class to handle all the API-related operations. 

Additionally, functions are now registered using a SQL-like language with a single string.



<?php



$api = new win32;



/*

     BOOL GetUserName(

        LPTSTR lpBuffer,    // address of name buffer

        LPDWORD nSize       // address of size of name buffer

     );

    Returns the current thread's username

    "&" passes argument as "refrence" not as "copy"

*/

$api->registerfunction("long GetUserName (string &a, int &b) From advapi32.dll");



/*

    DWORD GetTickCount(VOID)

    Returns the ms the OS is running

*/

$api->registerfunction("long GetTickCount () From Kernel32.dll");



$len = 255;                   // set the length your variable should have

$name = str_repeat("\0", $len); // prepare an empty string

if ($api->GetUserName($name, $len) == 0)

{

    die("failed");

}



if (!($time = $api->GetTickCount()))

{

    die("failed");

}



echo "Username: $name<br>\nSystemtime: $time<br>\n";



?>



GOOD LUCK !!



Jan Kleinsorge

arunasphp at anm dot org
06-Aug-2002 01:32


In order to use most (perhaps all?) of the win32 API while running with a web server you have to give the server service permission to interact with the desktop.  This is especially noticeable with the given example, where the script will try to display message boxes on the server's display.



Keep in mind, however, that you should think hard about the consequences of letting a web server interact with your desktop, especially if you're not the only one using the web server.

add a note

w32api_deftype

vpopmail_set_user_quota

Last updated: Wed, 26 Oct 2005