Игорь

php -f 2.php
array(2) {
  [0]=>
  string(0) ""
  [1]=>
  string(87) "Parse error: syntax error, unexpected ')' in 1.php on line 2"
}

conn = mysqli_connect('localhost', 'user', 'pass', 'db_name');

RewriteEngine on 
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^/]+)/?$ index.php?p=$1 [L,QSA]

... 
hs.clock  between str_to_date('01.08.16 15:00','%d.%m.%Y %H:%i') 
and str_to_date('01.08.16 17:00','%d.%m.%Y %H:%i') 
...

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

select t1.* from t1 left join t2 on t1.t2_id = t2.id where t2.id is null