Question

In my code I have a file that initializes a MySQLi class.

File a:

$db = new Database(); //MySQLi class

Anyways, there is a file that includes this database class. That file also includes other files that has function declared in it. I’m using global to contact $db

File b:

function xy(){
   global $db;
   $sql = "..."
   return $db->getArray($sql);
}

Testfile:

require "file_a.php";
require "file_b.php";
require_once "PHPUnit/Framework/TestCase.php";

class testProblemStatistics extends PHPUnit_Framework_TestCase {

  testArray(){
      $this->assertTrue(array_key_exists('xy', $this->xy())
  }
}

I get:
Fatal error: Call to a member function getArray() on a non-object

I investigated:

var_dump($db);
function xy(){
  global $db;
  var_dump($db);
  ...
}

The first dump gave me the MySQLi object,
the second dump gave me NULL

Something is wrong with the global variable in file_b.

Additional Information: I’m using PHPUnit and I’m running it in the command prompt. In a normal browser everything works fine.

Answer 1

The Solution is to hardcode the Database Class into the $GLOBALS Array.

$GLOBALS['db'] = $db;

Adding this as a PHPUnit bootstrap worked fine for me. It is kind of hacky and should be used in Test cases.