executing python program from cmd and php

Question

exec("cd /d c:\xampp\htdocs\youtube");
exec("python  main.py > c:\xampp\htdocs\youtube\out.txt");

I have written code in php so that it takes a python program and executes and it saves the result in out.txt but it is not working I did the same thing from cmd it is working where am i going wrong

Doing cd doesn't mean that next exec will be called from target directory. — u_mulder
– u_mulder, Commented Mar 11, 2016 at 19:57

C.Liddell · Accepted Answer · 2016-03-11 20:03:52Z

1

You should use either

exec("python  c:\xampp\htdocs\youtube\main.py > c:\xampp\htdocs\youtube\out.txt");

or

exec("cd /d c:\xampp\htdocs\youtube && python main.py > c:\xampp\htdocs\youtube\out.txt");

Because cd will not retain its directory over multiple exec() statements.

answered Mar 11, 2016 at 20:03

C.Liddell

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1 Comment

suniponna kumar Over a year ago

i have replaced it but the output of main.py is not saving into the output.txt .how to save the output of .py into txt file using cmd from php

Reto · Accepted Answer · 2016-03-11 20:01:36Z

0

You may try:

exec("cd /d c:\xampp\htdocs\youtube && python main.py > c:\xampp\htdocs\youtube\out.txt");

answered Mar 11, 2016 at 20:01

Reto

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6 Comments

suniponna kumar Over a year ago

i have replaced it but output of main.py is not writting in to output.txt

Reto Over a year ago

Try exec("cd /d c:\xampp\htdocs\youtube && python -V > c:\xampp\htdocs\youtube\out.txt"); If this writes the python version into your file, then your main.py file doesn't output anything. Else your OS doesn't find python when called from php

suniponna kumar Over a year ago

print("hiiiii ponna") this is main.py this is php <?php $code=$_POST["code"]; $filename_code="main1.py"; $out="output.txt"; $file_code=fopen($filename_code,"w+"); fwrite($file_code,$code); fclose($file_code); //exec("chmod 777 $out"); //$out=fopen("output.txt","w+"); exec("cd /d c:\xampp\htdocs\youtube && python -V > c:\xampp\htdocs\youtube\out.txt"); echo file_get_contents("output.txt"); fclose($out); ?> where iam going wrong i have writtten a html by post and it submits from that i am trying to exec the python please help

Reto Over a year ago

You are trying to write to a file "out.txt" and then you are trying to read the content of "output.txt"

suniponna kumar Over a year ago

yes but the writng is not happing into out.txt plz helpme

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