php-fpm：shell_exec 无法执行某些脚本

Question

server: Debian 11, nginx, php8.1-fpm

i want to execute this command from php but is not working, when i run from terminal (root)it works

$output = shell_exec('/usr/bin/dos2unix /var/www/script.sh');
echo $output;

when i run the code below it works

$output = shell_exec('ls /usr/bin/');
echo $output;

i think the user that run the script is www-data based on the code below

 $linuxUser = posix_getpwuid(posix_getuid());
 echo $linuxUser['name'];
result is www-data

also i added this in visudo just to test but still not working

www-data ALL=NOPASSWD: ALL

Answer 1

in visudo when u paste this

www-data ALL=(ALL) NOPASSWD:ALL

make sure it is at the very bottom line or it will not work, so move that line at the end of the file