PHP exec returns empty string while executing Python script

Question

I am trying to run a Python script inside PHP and show the output.

I tried with simple test.py inside PHP, which print hello world without problem. But when I try to execute my desired command from PHP script the exec() returns empty string instead of output.

So the here is my php script. Below snippets works fine:

$output = exec("python test.py"); 
var_dump($output);

But not the desired one.

$command = "python -m scripts.label_image --graph=tf_files/retrained_graph.pb --image=".$uploadfile;
$output = exec($command);
var_dump($output);

so the folder structure is:

/var/www/mysite/
              -scripts(folder which contains python scripts)
              -tf_files(folder with other files)
              -uploads (image folder)

Can someone tell me what is going wrong?

Sample output in stdout/shell:

@Dave Hi Dave, I am uploading a image file using a form and which is processed in upload.php file. I am also executing the command in upload.php. The upload.php file is in parent folder mysite. — Makau
– Makau, Commented Jul 2, 2018 at 11:23
Is the path to where Python is installed visible to the web server? For the version you posted that works fine where and how did you run it? — Dave
– Dave, Commented Jul 2, 2018 at 11:24
Hi dave, I am using ubuntu 18.04. The path to python is "/usr/bin/python" which is included at the beginning of every python script i used. Although I did not understand what you meant by "where Python is installed visible to the web server". But as test.py can run successfully from localhost I guess python is visible to web server. Does it answer your question? — Makau
– Makau, Commented Jul 2, 2018 at 11:36

Tidjean · Accepted Answer · 2022-07-08 01:38:57Z

0

the variable $output should an argument. If you do this, you should get only the last output of your script.

exec("python test.py", $output); 
var_dump($output);

https://www.php.net/manual/en/function.exec.php

answered Jul 8, 2022 at 1:38

Tidjean

211 silver badge3 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP exec returns empty string while executing Python script

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related