How do I get a PHP variable between single quotes?

How can I get the value $fbAppPath into the PHP statement below?

<? print json_encode(array(array('text' => 'Become A Fan', 'href' => '$fbAppPath'))); ?>

Solution

<? print json_encode(array(array('text' => 'Become A Fan', 'href' => $fbAppPath))); ?>

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