calling cgi/py within PHP with parameters

Question

I am trying to execute a cgi/python script from within php, and at the same time pass the cgi/python script a paramter.

in my php I have

<? echo exec('/var/www/cgi-bin/test.cgi ' + $_POST["var"]); ?>

However it doesn't work, and in the apache log it says 'sh:0 not Found'

This test script is very simple :

#!/usr/bin/python
import cgi, sys, os

for arg in sys.argv:
    print arg

Hello71 · Accepted Answer · 2011-02-14 22:09:23Z

2

As someone pointed out, the string concatenation operator in PHP is ., not +.

The result of "adding" non-numeric strings is 0. That's why the shell tries to run the command "0" and returns error: "sh:0 not found".

Try this:

exec('/var/www/cgi-bin/test.cgi ' . escapeshellcmd($_POST["var"]));

Also, note that shell command arguments should be escaped with escapeshellcmd.

Hello71

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answered Feb 14, 2011 at 21:57

scoffey

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