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I have a PHP webpage on my raspberry pi with 2 buttons (on and off) The on button button redirects to On.php The off button redirects to Off.php In "/usr/lib/cgi-bin" I have a python script that I would like to execute (script.py) I can perfectly execute it from the terminal by typing
cd /usr/lib/cgi-bin
sudo python script.py
It works if I do it from the terminal.
The problem is the PHP file (On.php) in my "/var/www" folder. This is what I wrote:
<?php
exec('cd /usr/lib/cgi-bin');
exec('sudo python script.py');
?>
Why is the script executing from the terminal, but not from my PHP?
522
To run a Python script from PHP, we can use the shell_exec function. $command = escapeshellcmd('/usr/custom/test.py'); $output = shell_exec($command); echo $output; to call escapeshellcmd to escape the command string. Then we call shell_exec to run the $command .
php $command_exec = escapeshellcmd('path-to-. py-file'); $str_output = shell_exec($command_exec); echo $str_output; ?> The right privileges need to be given so that the python script is successfully executed. Note − While working on a Unix type of platform, PHP code is executed as a web user.
You can execute python scripts using the exec() function in your php script.
You can't use sudo from a PHP script. Apache is running from an user (www-data generaly), so edit this file : /etc/sudoers
Then add this line :
www-data ALL=(ALL) NOPASSWD:ALL
Care ! this will authorize all functions to be called by a PHP script, you can adapt changing "ALL" by your script or Python command.
Then precise your user in your exec command :
<?php
exec('sudo -u www-data python /usr/lib/cgi-bin/script.py')
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