Errorhandler class

Platform utilises a custom error handler, and a custom shutdown function that ensures that all semaphores are released on script end.

There are also some utility functions for debugging code.

To introduce semi-strict type checking on functions, the class introduces the checkParams() which takes a variable number of parameters, but always in pairs of two.

One pass a variable to the function and then a type name, and if the variable doesn't match the given type, then an error is triggered.

Example:

/**
 * Display name and age of person.
 * @param string $name Name of person.
 * @param int $age Age of person.
 */
function displayNameAndAge($name, $age) {
  Errorhandler::checkParams($name, 'string', $age, 'int');
  echo $name.' - '.$age.' years.';
}

This will trigger an error if the $name and $age variable isn't of the correct types.

The following types can be checked. If anything else is typed it is considered a name of a class.

integer and floats are checked based on content and not variable type, so a string containing a valid integer number will pass as a integer.