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PHP OOP 继承
tryphp_inheritance3
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<!DOCTYPE html> <html> <body> <?php class Fruit { public $name; public $color; public function __construct($name, $color) { $this->name = $name; $this->color = $color; } protected function intro() { echo "The fruit is $this->name and the color is $this->color."; } } class Strawberry extends Fruit { public function message() { echo "Am I a fruit or a berry? "; // Call protected function from within derived class - OK $this -> intro(); } } $strawberry = new Strawberry("Strawberry", "red"); // OK. __construct() is public $strawberry->message(); // OK. message() is public and it calls intro() (which is protected) from within the derived class ?> </body> </html>
Am I a fruit or a berry? The fruit is Strawberry and the color is red.