PHP exec() not working | php.ini is fine

[alex32]

Hi, I’ve seen few topics but nothing worked.

My php.ini doesn’t block exec() or shell_exec(), but yet the shell command from php doesn’t execute. It works only from the terminal.
I gave folder permissions to user: cyberpanel: still not working

Please help
Thanks

shell_exec not working.

Hello, We are using the following. Cyberpanel + lightspeed Currently, the info file has the following. disable_functions show_source, system show_source, system Still we are unable to execute the script via php. When used in commandline, it works. (root). But not working when switched to the user account or called via browser.

[josephgodwinke]

Hello @alex32 Happy you are here

Have a look at this and see if it will help

How to enable php exec function?

Hello @bgmsquad Happy you are here Go to https://SERVER_URL:8090/managephp/editPHPConfigs choose the desired php version ; This directive allows you to disable certain functions. ; It receives a comma-delimited list of function names. ; http://php.net/disable-functions disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcnt…

Shell_exec returns permissions error

Hi, Trying to copy files from /home/core_files to website folder, but permissions error returns any idea how to fix it? function copyStoreFiles($domain) { $cp = shell_exec('cp -r /home/core_files/* /home/'.$domain.'/public_html'); // updateConfigValues(); }

Run

php -m | grep pcntl

to confirm php_exec() is enabled

[alex32]

Thanks Josep

I removed pcntl_exec and restarted php

php -m | grep pcntl // this returns: pcntl
php --version // returns 8.2 but the version I’m using for the website running exec() is 8.0

Running the shell-command as sudo: didn’t work either.

sudo chmod a+rwx /my/path/ // granted permission to everyone

exec (“sudo /my/path/script.py”); // no error message, the script doesn’t run
shell_exec (“sudo /my/path/script.py”); // as above
shell_exec (“/my/path/whoami”); // as above

Any clue?
Thanks

[josephgodwinke]

@alex32

php --version // returns 8.2 but the version I’m using for the website running exec() is 8.0

You can change default PHP version in SSH terminal:

$ cp -f /usr/local/lsws/lsphp80/bin/php /usr/bin/

The default php.ini locations

/usr/local/lsws/lsphp80/etc/php.ini
/usr/local/lsws/lsphp74/etc/php.ini
/usr/local/lsws/lsphp73/etc/php.ini
/usr/local/lsws/lsphp72/etc/php.ini
/usr/local/lsws/lsphp71/etc/php.ini
/usr/local/lsws/lsphp70/etc/php.ini
/usr/local/lsws/lsphp56/etc/php.ini
/usr/local/lsws/lsphp55/etc/php.ini
/usr/local/lsws/lsphp54/etc/php.ini
/usr/local/lsws/lsphp53/etc/php.ini

@alex32

Running the shell-command as sudo: didn’t work either.
exec (“sudo /my/script.py”); // no error message, the script doesn’t run
shell_exec (“sudo /my/script.py”); // as above

You can run the script e.g.

$ /usr/local/lsws/lsphp80/bin/php shell_exec ("/my/script.py");

If its a permission issue follow this Shell_exec returns permissions error - #5 by chillyplate and see if it works for you

You can add a sink for the command e.g.

$ /usr/local/lsws/lsphp80/bin/php shell_exec("/home/mydomain.com/my_script.py 2>&1 | tee -a /home/mydomain.com/errorlog 2>/dev/null >/dev/null &");

OR better yet write a full script to run it e.g. php script would look like

<?php

$command = "run sth here";
shell_exec($command);

?>

place this somewhere in documentroot to run it

[alex32]

Thanks Joseph

I tried as you suggested:

$command ="/usr/local/lsws/lsphp80/bin/php shell_exec($txt_path test.py 2>&1 | tee -a /home/mysite.com/errorlog 2>/dev/null >/dev/null &)";
exec($command );

// result: no mysite.com/errorlog created

I moved test.py under mysite.com/bash // no changes

From php exec() or shell_exec() commands are still not executed.
But with no errors it’s difficult to fix…

shell_exec(‘whoami’);
// doesn’t return anything so I can’t add that user to sudoers. But I don’t think it makes any difference as I already tried to run test.py as sudo (above)

Not sure if it makes any difference but my php code runs under Joomla 4 framework.

Please help
Thanks

[josephgodwinke]

Just to be sure verything works , do this:

1. create a php file at /home/mydomainrunning php80/public_html

2. add the following code and try to run it

<?php
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
?>

[alex32]

Thanks for your support Joseph
I finally figured out why I got this problem
Your test script works fine when called from the browser:

<?php   
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
?>

total 16
-rwxrwxrwx  1 cyberpanel cyberpanel  427 Mar  7 13:27 test.py
drwxrwxr-x 21 bobi5464  bobi5464  4096 Mar  7 16:43 ..
drwxrwxr-x  2 bobi5464  bobi5464  4096 Mar  7 17:59 .
-rw-rw-r--  1 bobi5464  bobi5464    72 Mar  7 17:59 test.php

But shell_exec() commands doesn’t work unless I shape the string as below:

#!/usr/bin/env python
$command ="/usr/bin/python3   /my/path/test.py ";   // this is !crucial
$out = shell_exec($command);   
file_put_contents( '/my/path/test.txt', $out);   // test.txt is now working  

Still I don’t know why the python’s path has to be declared separately in that way, when from terminal the following works just fine:

> python3 /my/path/test.py

Thanks for your help, really appreciated !

Python Script Failing to Execute from PHP exec()

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