Execute python script with output from php

Question

Is there any special permission or setting in order to execute a python script that create a new file or image? This is my code:

<?
function py(){
 exec( 'python my_script.py');
 echo "ok";
}
py();
?>

And this is my python script (an example):

#!/usr/bin/python
import sys
f = open('out.txt', 'w')
print >> f, 'thats all'
f.close()

Running php i get "ok" message but no file is created. What am i doing wrong?

• albert: PHP should be executed by user www-user. So the Python script would be stared from the same user. Does www-user has the desired permissions to execute the Python script and access file-system for file-creation?
• slash89mf: How can i check that? @albert
• albert: I have never done this since I am not a PHP user so everything I am talking about is just mind-based. First you should find out which user is the owner of the folder and the script you want to access. If this is not www-user you could either change the user to www-user or pass the desired user name to the exec command as shown here
• Mehrdad Dadvand: run you php script by root permission. sudo script.php
• cmorrissey: Possible duplicate of Getting PHP to run a Python script

Answer 1

Setting the right permissions to file and folders did the trick.

enter image description here

On Mac OS: Alt + Click on "+", then search for _www and add World Wide Web Server to users giving read and write permission. Same for the root folder.

Answer 2

You need to call shell_exec() not exec() if you want to be able to capture the output:

Refernce: PHP Manual

• Goose: This is more of a way to debug, so it should be a comment, if I'm understanding correctly.
• slash89mf: I don't need to capture output, i want python script to execute and create files. In fact using shell_exec() has no effect