1.exec("filename.php","arg1=$arg1","arg2=$arg2");
2.system("filename.php","arg1=$arg1","arg2=$arg2");
3.`filename.php arg1=$arg1 arg2=$arg2`;

Razlikata m/u exec i system:
The "exec" function executes a system command and
never returns-- use "system" instead of "exec" if
you want it to return. It fails and returns false
only if the command does not exist and it is exe-
cuted directly instead of via your system's com-
mand shell.

A moje i kato file ako she chetesh outputa ot php-to.
open(FH,"filename.php arg1=$arg1 arg2=$arg2 |") || die($!);
while (<FH>) { .... }

Kakto se kazva there is more than one way to do it