<s>
Remote	B-General_Concept
Function	I-General_Concept
Call	I-General_Concept
is	O
a	O
proprietary	O
SAP	B-Application
interface	O
.	O
</s>
<s>
Remote	B-General_Concept
Function	I-General_Concept
Call	I-General_Concept
(	O
RFC	O
)	O
is	O
the	O
standard	O
SAP	B-Application
interface	O
for	O
communication	O
between	O
SAP	B-Application
systems	O
.	O
</s>
<s>
Remote	B-General_Concept
function	I-General_Concept
calls	I-General_Concept
may	O
be	O
associated	O
with	O
SAP	B-Application
software	O
and	O
ABAP	B-Language
programming	O
and	O
provide	O
a	O
way	O
for	O
an	O
external	O
program	O
(	O
written	O
in	O
languages	O
such	O
as	O
PHP	B-Application
,	O
ASP	B-General_Concept
,	O
Java	B-Device
,	O
C	B-Language
,	O
or	O
C++	B-Language
)	O
to	O
use	O
data	O
returned	O
from	O
the	O
server	O
.	O
</s>
<s>
SAP	B-Application
can	O
act	O
as	O
the	O
Client	O
or	O
Server	O
in	O
an	O
RFC	O
call	O
.	O
</s>
<s>
A	O
Remote	B-General_Concept
Function	I-General_Concept
Call	I-General_Concept
(	O
RFC	O
)	O
is	O
the	O
call	O
or	O
remote	O
execution	O
of	O
a	O
Remote	O
Function	O
Module	O
in	O
an	O
external	O
system	O
.	O
</s>
<s>
In	O
the	O
SAP	B-Application
system	O
,	O
these	O
functions	O
are	O
provided	O
by	O
the	O
RFC	O
interface	O
system	O
.	O
</s>
<s>
The	O
RFC	O
interface	O
system	O
enables	O
function	O
calls	O
between	O
two	O
SAP	B-Application
systems	O
.	O
</s>
<s>
Each	O
ABAP	B-Language
program	O
can	O
call	O
a	O
remote	O
function	O
module	O
using	O
the	O
command	O
CALL	O
FUNCTION	O
...	O
DESTINATION	O
.	O
</s>
<s>
The	O
parameter	O
DESTINATION	O
informs	O
the	O
SAP	B-Application
system	O
that	O
the	O
called	O
function	O
module	O
runs	O
in	O
a	O
different	O
system	O
to	O
the	O
calling	O
system	O
.	O
</s>
<s>
RFC	O
function	O
modules	O
in	O
an	O
SAP	B-Application
system	O
must	O
be	O
proper	O
function	O
modules	O
and	O
must	O
be	O
registered	O
in	O
the	O
SAP	B-Application
system	O
as	O
remote	O
.	O
</s>
<s>
If	O
the	O
calling	O
program	O
and	O
the	O
called	O
program	O
are	O
both	O
ABAP	B-Language
programs	O
,	O
the	O
RFC	O
interface	O
provides	O
both	O
communication	O
partners	O
.	O
</s>
<s>
The	O
calling	O
program	O
can	O
be	O
any	O
ABAP	B-Language
program	O
,	O
and	O
the	O
called	O
program	O
must	O
be	O
a	O
function	O
module	O
that	O
is	O
registered	O
as	O
remote	O
.	O
</s>
<s>
If	O
either	O
the	O
calling	O
program	O
or	O
the	O
called	O
partner	O
is	O
not	O
an	O
SAP	B-Application
program	O
,	O
it	O
must	O
be	O
programmed	O
in	O
such	O
a	O
way	O
that	O
it	O
can	O
play	O
the	O
role	O
of	O
the	O
other	O
partner	O
in	O
RFC	O
communication	O
.	O
</s>
<s>
To	O
implement	O
RFC	O
partner	O
programs	O
in	O
non-SAP	O
systems	O
,	O
read	O
:	O
Components	O
of	O
the	O
SAP	B-Application
Communication	O
Technology	O
.	O
</s>
<s>
RFC-supported	O
and	O
GUI-supported	O
interfaces	O
can	O
be	O
used	O
by	O
external	O
programs	O
to	O
call	O
function	O
modules	O
in	O
SAP	B-Application
systems	O
,	O
and	O
execute	O
them	O
in	O
these	O
systems	O
.	O
</s>
<s>
Likewise	O
,	O
ABAP	B-Language
programs	O
can	O
also	O
use	O
these	O
interfaces	O
to	O
use	O
functions	O
supplied	O
by	O
external	O
programs	O
.	O
</s>
<s>
Functions	O
are	O
remote-enabled	O
by	O
setting	O
the	O
"	O
Remote-enabled	O
module	O
"	O
-flag	O
in	O
the	O
Attributes	O
tab	O
of	O
the	O
ABAP	B-Language
Workbench	O
:	O
Function	O
Builder	O
(	O
transaction	O
SE37	O
)	O
.	O
</s>
<s>
SAPRFC	O
is	O
an	O
open	B-Application
source	I-Application
program	O
for	O
*	B-Application
NIX	I-Application
and	O
Windows	B-Application
systems	O
that	O
allows	O
PHP	B-Application
to	O
make	O
calls	O
to	O
an	O
RFC-enabled	O
SAP	B-Application
R/3	O
system	O
.	O
</s>
