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<?php class Product { public $name; public $price; public $description; public $brand; public function __construct($name, $price,$description,$brand) { $this->name = $name; $this->price = $price; $this->description = $description; $this->brand = $brand; } function show() { return 'Name: '.$this -> name .' Price:'.$this->price .'Description:'.$this->description. ' Brand:'. $this->brand; } } // $y = new Product('Iphone X ', '$1500 ', 'Phone ', 'Apple '); // echo $y -> show(); class Phone extends Product { protected $cpu; protected $ram; protected $sim; protected $hdd; protected $os; function __construct($name,$price,$description,$brand,$cpu,$ram,$sim,$hdd,$os) { parent:: __construct($name,$price,$description,$brand); $this->cpu = $cpu; $this->ram = $ram; $this->sim = $sim; $this->hdd = $hdd; $this->os = $os; } function show(){ parent:: show(); echo 'CPU: '.$this->cpu .'RAM: ' .$this->ram .'SIM: ' .$this->sim .'HDD: ' .$this->hdd .'OS: ' .$this->os; } } class Monitor extends Product{ protected $diagonal; protected $frequency; protected $ports; function __construct($name,$price,$description,$brand,$diagonal,$frequency,$ports) { parent:: __construct($name,$price,$description,$brand); $this->diagonal = $diagonal; $this->frequency = $frequency; $this->ports = $ports; } function show(){ parent:: show(); echo 'Diagonal: '.$this->diagonal .'Frequency: ' .$this->frequency .'Ports: ' .$this->ports; } } $prod = [ 'x' => new Phone('Iphone X ', '$1500 ', 'Phone ', 'Apple ', 'A9 ', '1024 ', '1 ', '128gb ', 'Ios '), 'mon' => new Monitor('Abracadabra ', '$1500 ', 'Monitor ', 'DELL ', '24 ', '144ghz ', 'HDMI '), 'mon1' => new Monitor('ROG ', '$1500 ', 'Monitor ', 'ASUS ', '24 ', '144ghz ', 'HDMI ') ]; foreach($prod as $p) $p->show();