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PHP OOP 继承
tryphp_inheritance4
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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; } public function intro() { echo "The fruit is $this->name and the color is $this->color."; } } class Strawberry extends Fruit { public $weight; public function __construct($name, $color, $weight) { $this->name = $name; $this->color = $color; $this->weight = $weight; } public function intro() { echo "A $this->name is $this->color, and the weight is $this->weight gram."; } } $strawberry = new Strawberry("Strawberry", "red", 50); $strawberry->intro(); ?> </body> </html>
The fruit is Strawberry, the color is red, and the weight is 50 gram.