How to run the application and set parameters via GET request?

Question

PHP

O great Guru, tell the beginner. Put smstools to send sms via modem. I want to send SMS via GET request. Tried to solve it like this:

<?php 
$phones = $_GET['phones']; 
$mes = $_GET['mes']; 
$phones = escapeshellcmd($phones); 
$mes = escapeshellcmd($mes); 
$cmd = "smssend " . $phones . " '" . $mes . "'"; 
echo($cmd); 
exec($cmd); 
?>

but SMS does not come, I think that there are not enough rights to start.
Suggest a solution.
Thank you for your time.

Answer 1

i think i dont have permission to run

Is it not an option to look at error.log and check what exactly it is missing?