funguje.php

<?php
function apache_vhosts($binary='sudo /usr/sbin/apache2ctl')
{
  $command = " -S 2>&1 | grep 'port ' | awk {'print $2,$4'} | sort -u -t' ' -k2,2 | grep -v 'localhost'";
  $vhosts = shell_exec(sprintf("%s %s", $binary, $command));
  $vhosts = explode("\n", trim($vhosts));

  $results = array();
  foreach($vhosts as $vhost)
  {
    $x = explode(' ', $vhost, 2);
    $new_entry['{#SERVERNAME}'] = $x[1];
    $new_entry['{#SERVERPORT}'] = $x[0];
    $results['data'][] = $new_entry;
  }

  return $results;
}

function nginx_vhosts() {
  $vhosts = shell_exec("grep -Pro '\bserver_name\s*\K[^;]*' /etc/nginx | sed 's/:/ /' | awk {'print $1,$2'} | grep -v 'localhost'");
  $vhosts = explode(PHP_EOL, trim($vhosts));

  $results = array();
  foreach($vhosts as $vh) {
    $x = explode(' ', $vh, 2);
    $domain = $x[1];
    $file = $x[0];

    # Grab ports from file
    $ports = shell_exec( sprintf("grep -Pro '\blisten\s*\K[^;]*' %s | awk {'print $1'} | grep -o '[0-9]*' | sort | uniq", $file));
    $ports = explode(PHP_EOL, trim($ports), 2);

    foreach($ports as $port)
    {
      $result = array();
      $result['{#SERVERNAME}'] = $domain;
      $result['{#SERVERPORT}'] = $port;
      $results['data'][] = $result;
    }
  }
  return $results;
}

function main() {
  if (file_exists('/etc/nginx_DISABLE')) {
    echo json_encode( nginx_vhosts() );
  }
  elseif (file_exists('/usr/sbin/apache2ctl'))
  {
    echo json_encode( apache_vhosts() );
  } elseif (file_exists('/usr/sbin/apachectl')) {
    echo json_encode( apache_vhosts('/usr/sbin/apachectl') );
  }
}

main();

nefunguje_OPRAVIT.php

<?php
$results = array();

function apache_vhosts(array $results) {	
	$binary='sudo /usr/sbin/apache2ctl';
	$command = " -S 2>&1 | grep 'port ' | awk {'print $2,$4'} | sort -u -t' ' -k2,2 | grep -v 'localhost'";
	$vhosts = shell_exec(sprintf("%s %s", $binary, $command));
	$vhosts = explode("\n", trim($vhosts));
  
	foreach($vhosts as $vhost) {
		$x = explode(' ', $vhost, 2);
		$new_entry['{#SERVERNAME}'] = $x[1];
		$new_entry['{#SERVERPORT}'] = $x[0];
		$results['data'][] = $new_entry;
	}  
}

function nginx_vhosts(array $results) {
	$vhosts = shell_exec("grep -Pro '\bserver_name\s*\K[^;]*' /etc/nginx | sed 's/:/ /' | awk {'print $1,$2'} | grep -v 'localhost'");
	$vhosts = explode(PHP_EOL, trim($vhosts));

	foreach($vhosts as $vh) {
		$x = explode(' ', $vh, 2);
		$domain = $x[1];
		$file = $x[0];

		# Grab ports from file
		$ports = shell_exec( sprintf("grep -Pro '\blisten\s*\K[^;]*' %s | awk {'print $1'} | grep -o '[0-9]*' | sort | uniq", $file));
		$ports = explode(PHP_EOL, trim($ports), 2);

		foreach($ports as $port) {
			$result = array();
			$result['{#SERVERNAME}'] = $domain;
			$result['{#SERVERPORT}'] = $port;
			$results['data'][] = $result;
		}
	}
}

if (file_exists('/usr/sbin/apachectl')) {
	echo json_encode( apache_vhosts($results) );
}

if (file_exists('/etc/nginx')) {
	echo json_encode( nginx_vhosts($results) );
}

return $results;
?>

pozadovany_vystup.json

{
   "data":[
      {
         "{#SERVERNAME}":"example.com",
         "{#SERVERPORT}":"443"
      },
      {
         "{#SERVERNAME}":"example.com",
         "{#SERVERPORT}":"80"
      }
   ]
}