How to use the PHP COM class to access SAT Emulator dll functions?

Question

I’m developing a ERP you need to use SAT to issue an Electronic Tax Coupon, but I don’t know how to use the PHP to access the DLL of the Offline Emulator.

I’ve been researching and it seems that it is possible to access with new COM(), but I saw little content concerning this.

Someone knowledgeable to give a help?

Answer 1

To use the class COM it is necessary to activate the extension php_com_dotnet.dll in php.ini (clearly this is only for Windows), something like this:

extension=php_com_dotnet.dll

After this you need to restart Apache/Nginx/lighttpd (or restart the server/machine).

• The class new COM doesn’t have much documentation anyway, because there’s nothing to talk about, this because the only thing he does is release the functions of a Registered DLL in the operating system.

• The class does not load or read Dlls, it only loads the registered Dlls functions, as example of some Activex usage.

• WITH IT MEANS Component Object Model, ie the class will only access Dlls that use things like OLE, basically if the DLL is not made with OLE and compatible, it will not be possible to use new COM, as I said this is not a class to load Dlls but to load the Dlls functions registered in the System.

  i do not know whether it is possible to access all Activex, COM+ and DCOM, which are other technologies of the same track, I will edit the answer as soon as I can confirm.

To register a Dlls it is necessary to run the command REGSVR32:

REGSVR32 minhadll.dll

If the DLL has the COM interface and the record occurs all right, then you will have access via PHP normally, something like (hypothetical example):

• Register:

  REGSVR32 FooBar.dll
  

• Use:

  $my_dll = new COM('FooBar.Functions');
  

Run DLL by command line

Assuming that the documentation provides some access to a command line tool of the SAT itself, could use a shell_exec thus:

$comando = escapeshellcmd('ferramenta_sat_hipotetica.exe comando1 comando2 arg3');
$resposta = shell_exec($comando);

echo $resposta;

You can also try running the Windows RUNDLL32 command:

RUNDLL32.EXE <dllname>,<entrypoint> <optional arguments>

It would look something like:

RUNDLL32.EXE MINHADLL.DLL,Install 200 Argumento

In PHP it would look like this:

$comando = escapeshellcmd('RUNDLL.EXE MINHADLL.DLL,Install 200 Argumento');
$resposta = shell_exec($comando);

echo $resposta;

Read more about RUNDLL in:

• https://technet.microsoft.com/pt-br/library/ee649171(v=Ws.10). aspx
• https://support.microsoft.com/pt-br/kb/164787

I found the documentation and an example with the DLL, in the example they put an extra quote, maybe it is typo new COM('"SATscript.DLL.object'), yet if you fail try this new COM('SATscript.DLL.object').

First download the http://sistemas.sweda.com.br/downloads/suporte/SATscript.zip then rotate the REGSATscript.exe that this inside the compact, it will register the DLL, should run version 64bit if you are using Windows 64bit, any questions or problem inside the folder has this file SATscript.zip\Manual\ManualdoUsuarioSATScript.pdf, after registering the DLL just run:

<?php

try {
    $SATsw = new COM('"SATscript.DLL.object') OR die ('NÃO POSSO CRIAR OBJETO');

    // "?????????????????    S T A T U S   ???????????????????????????"
    // "Índice       Retorno 0                     Retorno 1 "
    // "  1    Impressora operacional        Impressora em falha" 
    // "  2    Off Line                      On Line "
    // "  3    Papel OK                      Fim de papel "
    // "  4    Guilhotina não detectada      Guilhotina detectada "
    // "  5    Tampa térmica fechada         Tampa térmica aberta "
    // "  6    Sem papel sobre o sensor      Papel posicionado sobre o sensor "
    // "  7    Gaveta fechada                Gaveta aberta. "
    // "  8    Cheque inserido               SEM CHEQUE."

    $LF = '<br>';

    $retorno = $SATsw->Status_SI300 ("1");  
    echo 'Status_SAT ("1")   ->  Operacional?    = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("2");  
    echo 'Status_SAT ("2")   ->  ON/OFF?         = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("3");  
    echo 'Status_SAT ("3")   ->  FIM Papel?      = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("4");  
    echo 'Status_SAT ("4")   ->  Guilhotina?     = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("5");  
    echo 'Status_SAT ("5")   ->  Tampa?          = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("6");  
    echo 'Status_SAT ("6")   ->  Papel acabando? = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("7");  
    echo 'Status_SAT ("7")   ->  Gaveta?         = ', $retorno, $LF;

    $retorno = $SATsw->Status_SI300 ("8");  
    echo 'Status_SAT ("8")   ->  Cheque?         = ', $retorno, $LF;

    $retorno = $SATsw->StatusGuilhotina_SI300 ();
    echo 'StatusGuilhotina_SI300 () -> Guilhotina? = ', $retorno, $LF;

} catch (Exception $e) {
    echo 'resultado: ', $e->getMessage(), "\n";
}