Python Script Failing to Execute from PHP exec()

Question

I have a simple PHP function that is supposed to execute a Pyton script when its called. I have tried this sort of function multiple times in my php programs, but somehow th

Answer 1

Try removing the $mystring; line

function success() {
   $mystring = exec('python testing.py');
   if(!$mystring){
       echo "python exec failed";
   } else {
       echo "<br />";
       echo "successfully executed!";
   }
}

For testing purposes try:

function success() {
   $mystring = exec('python testing.py', $output);
   var_dump($output);
}

Answer 2

you have to use full path for the python and for your file. you may find the former from the which python command, that most likely outputs '/usr/bin/python' and you should already know the latter. so your command would look like this:

$mystring = exec('/usr/bin/python /home/user/testing.py');

and you should make sure your python script has all appropriate permissions, because your web-server most probably is running as a different user, so permissions should be "-rwxrwxr-x" or something close.

Answer 3

There is no issue with the exec() or anything.
The problem is that the nltk module is not able to locate the nltk_data directory. For it just locate where the nltk_data is present in your system: usually ~/nltk_data.
Now import add that path when you run the function.
import nltk;
Now, nltk.data.path is a list of locations where to search for the modules.
You can just do nltk.data.path.append("your location/directory");

Answer 4

try to use exact path to the python program.

$mystring = exec('python testing.py');