Description:
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Method chaining is very impressive when done properly.  For example:

$location = new location();
$location->city('Boston')->state('Massachusetts')->getMap();

In JavaScript, it is possible to chain from the constructor, like this:
new location.city('Boston').state('Massachusetts').getMap();

Where in PHP, the equivalent would be:
new location()->city('Boston')->state('Massachusetts')->getMap();

Is there a reason why the __construct of a class cannot return itself for method chaining like its' methods?  When I try, I receive a Parse Error.

Thank you!


Reproduce code:
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From manual page: language.oop5
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