SAPRFC works great unless SAP is bounced

Question

'Everything is working fine unless SAP is taken off line. In which case the php.exe process cpu utilization jumps to 50% and is no longer listening for the RFC.
Once SAP is back on line the php.exe process cpu time is still 50% and still no longer listening. Do I need an error trap, am I using something incorrectly, or is my code fundamentally flawed? Any help is appreciated.
require_once( "api_tunnel.php" );
  $DEF_RFC_KWIKSHIP_API= array (
                  array (
                       "name"=>"MSGTOFS",
                       "type"=>"IMPORT",
                       "optional"=>"0",
                       "def"=> array (
                            array ("name"=>"","abap"=>"C","len"=>10000,"dec"=>0)
                  array (
                       "name"=>"MSGFROMFS",
                       "type"=>"EXPORT",
                       "optional"=>"0",
                       "def"=> array (
                            array ("name"=>"","abap"=>"C","len"=>10000,"dec"=>0)
// Call script with: ./KWIKSHIP_rfc_connector.php -a KWIKSHIP_api -g hostname -x sapgw00 –t c:\
$rfc = saprfc_server_accept ($argv);
$fcl["KWIKSHIP_API"] = saprfc_function_define(0,"KWIKSHIP_API",$DEF_RFC_KWIKSHIP_API);
// PHP server function
while (true)
   $rc = saprfc_server_dispatch ($rfc, $fcl);
function KWIKSHIP_api($fce) {
           $phpconnector_input_str = saprfc_server_import($fce,"MSGTOFS");
     $return_str = SendAPIMessage($phpconnector_input_str);
           saprfc_server_export ($fce,"MSGFROMFS",$return_str);
           return (true);
//Attempt to run listener without ever closing the saprfc connection; Close RFC if necessary
saprfc_close ($rfc);

Answer 1

Hi,
SAPRFC - works on - Windows Server 2003 (IIS x32) and on Apache WAMP -  PHP 5.2.8 - with - php_saprfc_528.dll.
The crucial  thing is the c++ dll complilation. So you cannot use php_saprfc_530.dll for PHP 5.3.5 - it only works with
PHP 5.3.0 and so on. Each php release needs its own c++ compilation for  the php_saprfc_xxx.dll.
I already asked eduard.koucky at czech-tv.cz (the project leader) how to compile a php_saprfc_535.dll  together  with
Visual Studio 2008 and saprfc_php5.sln?
It seems to depend on the php dll build includes in the property sheets of the project in VS 2008:
"..\Build\Php.Build\php-5.2.8";
"..\Build\Php.Build\php-5.2.8\Zend";
"..\Build\Php.Build\php-5.2.8\TSRM";
"..\Build\Php.Build\php-5.2.8\main";
"..\Build\Php.Build\php-5.2.8\win32";
"C:\Program Files\Microsoft SDKs\Windows\v6.1\Include";
..\Build\RFCSDK.710.Win32\include;
..\Build\Php.Build\Win32\include
You find existing versions of the php_saprfc_xxx.dlls here -> http://sourceforge.net/projects/saprfc/files/saprfc/ :
4.3.0  -  4.3.2  -  4.3.8  -  4.3.10  -  4.4.0  -  4.4.1  -  4.4.9  -  5.0.0  -  5.0.3  -  5.0.4  -  5.1.1  -  5.2.8  -  5.3.0
Best regards
Axel Arnold Bangert - Herzogenrath 2011