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suppose i have a php database connection file. Consider two cases if there is an connection error :

  1. If request is a normal request (not ajax) then i would simply echo a message and exit.
  2. If request is a ajax request then i have to use json encode to send status and msg to client side js.

How can i separate the logic for above code, or how is this normally handled by you guys.

Consider another case : If a login in session is expired :

  1. If request is a normal request (not ajax) then i would simply use header('location: login.php');
  2. If request is a ajax request then ? (should i need to send a status code to client side and then use window.location )
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  • What about using POST method in ajax and checking it in php code? if ($_SERVER['REQUEST_METHOD'] === 'POST') Commented Jul 3, 2018 at 10:06

1 Answer 1

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Please use Below Code:

if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest')
{    
  echo "Ajax Request";
}
else{
  echo "Not an Ajax Request";
}
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