Restart NAMED/bind Service via Cronjob/bash in PHP - php

Question

I simply want to restart named depending on whether a file exists. I've been stuck on this all day.
Command to create bash file:
$this->execute('echo -e "#!/bin/bash\nsudo /sbin/service named reload" >> /var/reload_named.sh');
Here is my cronjob:
*/1 * * * * cronjob: sudo sh /var/reload_named.sh; rm -f /var/reload_named.sh;
Here is what happens when the cronjob runs (/var/log/cron):
Jul 30 18:34:01 digitalocean CROND[24864]: (root) CMD (cronjob: sudo sh /var/reload_named.sh; rm -f /var/reload_named.sh )
Jul 30 18:34:01 digitalocean CROND[24862]: (root) UNSAFE (”example#digitalocean.com”)
For some reason it says it is UNSAFE. I've tried running with and without sudo.
It manages to delete the file but not restart named. I have tried doing so many other methods to get this to work.
I've tried (Over lots of Googling):
Running exec('service named restart') in php
Creating a .c file and adding a user that runs it from php
Running service named restart directly in crontab -e
Attempted different variations on running it with sudo
Tried adding apache user to sudo (Still fails)
Any help much appeciated
(I am on Centos 6.7)

Answer 1

I finally worked out a way to do this. Here is a method which SSHs into itself as root and runs service command:
$this->root_execute('service named reload');
public function root_execute($command = '')
{
set_include_path('/path/to/dir/ssh/');
require_once('Net/SSH2.php');
$ssh = new Net_SSH2(SSH_HOST);
if (!$ssh->login(SSH_USER, SSH_PASS)) {
exit('failed');
}
$res = $ssh->exec($command);
$ssh = null;
restore_include_path();
return $res;
}
(Unfortunately doesn't work with HTTPD if running from http .php)