PHP Best way to stop constructor

Question

I am dealing with stop the constructor.

public function __construct()
{
   $q = explode("?",$_SERVER['REQUEST_URI']);
   $this->page = $q[0];

   if (isset($q[1]))
      $this->querystring = '?'.$q[1];

   if ($this->page=='/login') {include_once($_SERVER['DOCUMENT_ROOT'].'/pages/login.php');
      // I WANT TO EXIT CONSTRUCTOR HERE
}

There are function to stop/exit constructor :

die() , exit(), break() and return false

I am using return false but i am confusing about security. What is the best way to exit constructor ?

Thank you for your time.

Answer 1

A full example, because questions should have an accepted answer:

Throw an exception in the constructor like this:

class SomeObject {
    public function __construct( $allIsGoingWrong ) {
      if( $allIsGoingWrong ) {
        throw new Exception( "Oh no, all is going wrong! Abort!" );
      }
    }
}

Then when you create the object, catch the error like this:

try {
  $object = new SomeObject(true);
  // if you get here, all is fine and you can use $object
}
catch( Exception $e ) {
  // if you get here, something went terribly wrong.
  // also, $object is undefined because the object was not created
}

If for whatever reason you do not catch the error anywhere, it will result in a Fatal Exception that will crash the entire page, which will explain that you "failed to catch an exception" and will show you the message.