Hi,
  May I know, how can I generalize my php script and how would that script be 
like based on these description:

1--The script should be a ONE php-program that takes a file name (URL) to 
download as command line parameter.

2--Depending on the extension of the file to download, the program should 
choose between downloading and unpacking (.ext1 extension), or just downloading 
(.ext2 and .ext3).

overall working archi.....
        .
        |
        |
--------------------
file extension |------ext1-----set ext1=true--------
--------------------                                              |
        |                                                         |
        |    ext2, ext3                                       |
--------------------                                              |             
                             
set ext1=true |                                             |
--------------------                                              |
         |                                                        |
         |--------------------------------------------------------
--------------------
download      |
--------------------
         |
         |
------------------                         ------------
ext1            | ----------true-------- unzip   |
-----------------                          ------------
        |                                        |
      false                                ready

       
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