Three levels of inheritance
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<?php class Employee {
private $name; function setName($name) { if ($name == "") echo "Name cannot be blank!"; else $this->name = $name; }
function getName() { return "My name is ".$this->name."<br />"; }
} class Executive extends Employee {
function methodB() { echo " my yacht!"; } } class CEO extends Executive { function methodC() { echo "tuck"; } }
$ceo = new CEO(); $ceo->setName("Joe"); $ceo->methodB(); $ceo->methodC();
?>
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