How to send commands to command prompt using php

Question

$exec = exec("net use LPT1: \\XXXXXX\PRINTER1 \\PERSISTENT:YES");
    $exec = exec("E:");
    $exec = exec("COPY OUT.TXT LPT1");

tried shell_exec

 $exec = shell_exec("net use LPT1: \\XXXXXX\PRINTER1 \\PERSISTENT:YES");
$exec = shell_exec("E:");
$exec = shell_exec("COPY OUT.TXT LPT1");

tried popen

 $exec = popen("net use LPT1: \\XXXXXX\PRINTER1 \\PERSISTENT:YES", "r");
$exec = popen("E:", "r");
$exec = popen("COPY OUT.TXT LPT1", "r");

I have tried all this in my code,but i am not able to execute it.. can anyone give a solution

Debug it. See what goes wrong. The user PHP runs at may not be able to execute those commands. Also use an absolute path when copying. — Pekka
– Pekka, Commented Jul 11, 2013 at 13:56
@Pekka웃 the commands works fine if i run through command prompt — dude
– dude, Commented Jul 11, 2013 at 13:57
Your point being...? That doesn't mean PHP can run the command as well. See the source code in the question here: How can I debug exec() problems? for how to make error messages appear when exec()ing commands. They do not show up by default. — Pekka
– Pekka, Commented Jul 11, 2013 at 13:58
the user running the webserver probably doesn't have permission to do do net use — Orangepill
– Orangepill, Commented Jul 11, 2013 at 13:59

Community · Accepted Answer · 2017-05-23 10:25:33Z

2

exec() will not show you any error messages that your calls may produce.

To debug the problem, you need to make those messages visible. Stealing from this question:

exec('(your command here) 2>&1',$output,$return_val);
if($return_val !== 0) {
    echo 'Error<br>';
    print_r($output);   
}

Also, I'm not sure whether executing E: will actually change the working directory for the following command(s). You're probably better off using absolute paths:

 exec("COPY E:\OUT.TXT LPT1");

edited May 23, 2017 at 10:25

CommunityBot

11 silver badge

answered Jul 11, 2013 at 14:01

Pekka

451k150 gold badges990 silver badges1.1k bronze badges

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

3 Comments

Pekka Over a year ago

The example is above? You just need to insert your command where it says "your command here".

dude Over a year ago

whats the variable $output and $return_val refer to in the above example

Pekka Over a year ago

You can set them to any value beforehand, they are just used to contain the return values. You can do a $output = null; $return_val = null; in the line before so you don't get any warnings.

Gerald Schneider · Accepted Answer · 2013-07-11 14:00:17Z

0

Every exec() (or other shell) call opens a shell and closes it again. You have to combine everything in a single exec() call, maybe with a batch script.

answered Jul 11, 2013 at 14:00

Gerald Schneider

17.8k10 gold badges64 silver badges79 bronze badges

Comments

user4041331 · Accepted Answer · 2024-01-27 21:01:44Z

0

I was looking for an answer to this and I found what your looking for:

Example:

shell_exec('start calc');

This will open Calculator

answered Jan 27, 2024 at 21:01

user4041331

Collectives™ on Stack Overflow

How to send commands to command prompt using php

3 Answers 3

3 Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

3 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related