Hi Guys, Given below is a PHP script. Can someone help me with the output of the code. According to my understanding the output should be 3, 50, 20, 10. Can someone elaborate on the same and provide me an explanation on the flow? Thanks a lot in advance. <?php class TestClass { var $a =20; var $b =10; function TestClass($a= null, $b=null) { if (!is_null($a)) { $this-‐>a= $a; } if(!is_null($b)) { $this-‐>b=$b; } } function printAB() { echo $this-‐>a.” “.$this-‐>b.”\n”; } } $inst1 = new TestClass(3,50); $inst2 = new TestClass(); $inst1-‐>printAB(); $inst2-‐>printAB(); ?>