HELP!! How to run different kind of perl and unix scripts inside PHP ?

[phpuser_2000]

Hi!

I am new to PHP. I am trying to run perl scipt and and korn shell script (demo.ksh) inside PHP script.
Could anyone tell me how I coudl use perl scripts and demo.ksh inside PHP ?

And how woudl i run the perl script or demo.ksh with parameter inside PHP.

Thanks a lot

phpuser

[Mordecai]

Program Execution Functions will be of use.