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<?php class Math { const pi = 3.14; } class CircleMath extends Math { public static function calculateArea($radio) { return parent::pi * pow($radio, 2); } } class Circle { private $radio = '0.0'; private $color = 'red'; public function __construct($radio, $color) { $this->radio = $radio; $this->color = $color; } public function calculateArea() { return CircleMath::calculateArea($this->radio); } public function get_radio() { return $this->radio; } public function get_color() { return $this->color; } } $className = 'Circle'; $circle = new $className(6, 'blue'); echo sprintf('El área del circulo color %s y con radio de longitud %s es: %s', $circle->get_color(), $circle->get_radio(), $circle->calculateArea()); ?>
Output for git.master, git.master_jit, rfc.property-hooks
El área del circulo color blue y con radio de longitud 6 es: 113.04

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