ใครพอรู้เรื่อง PHP Toolkit Functions หรือการเชื่อมต่อ i5 connect PHP to an AS/400 บ้างครับ

$conn = i5_connect("1.2.3.4", "MYUSER", "MYPWD");
if (!$conn) {
  die(i5_errormsg());
}

/* Basic connection to i5/OS */
$conn = i5_pconnect("i.2.3.4","USER","PWD", array(i5_OPTIONS_IDLE_TIMEOUT=>120))
    or die(i5_errormsg());
echo " Connection OK <BR>";
 
 
/* Connection error detail in case of failure */
$conn = i5_pconnect("i.2.3.4","MYUSER","MYPWD");
if (!$conn) {
$error = i5_error();
echo " Error during connection\n";
echo "<BR> Error number: ".$error["num"];
echo "<BR> Error category: ".$error["cat"];
echo "<BR> Error message: ".$ error ["msg"];
echo "<BR> Error description: ".$ error ["desc"];
trigger_error("I5 persistent connection fails", E_USER_ERROR);
}
else {
echo " Connection OK ";
$isnew = i5_get_property(I5_NEW_CONNECTION);
if ($isnew) ) {
echo " New connection. Do some job initialization \n";
}
}
 
 
/* leaves connection without closing it. */
/* Make it available for another script. */
$ret = i5_close($conn);
if($ret){
echo " I5 disconnected";
}
else
{
$ret = i5_errormsg($conn);
}