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PHP Object-Oriented PHP Basics (Retired) Inheritance, Interfaces, and Exceptions Final Challenge

Posted by Marko Zelic
Marko Zelic
727 Points

can't get echo working, need a hint

$c = $brook_trout;

$n = "getInfo";

$result = $c->n; echo $result;

I want to echo the result of the getInfo method on the brook_trout object. I tried a few ways, this is just the last one. A hint would be of much help..:)

Jeff Busch
Jeff Busch
19,287 Points

echo $brook_trout->getInfo();

2 Answers

Carles Jove i Buxeda
Carles Jove i Buxeda
4,281 Points
Carles Jove i Buxeda
Carles Jove i Buxeda
4,281 Points

If $brook_trout is an instance of a class (that is, an object) that has a method called getInfo(), as such:

<?php
class BrookTrout {
    public function getInfo() {
        return "hello";
    }
}
?>

Then:

<?php
$brook_trout = new BrookTrout();
echo  $brook_trout->getInfo(); // outputs "hello"
?>
TaJuanna Williams
TaJuanna Williams
26,697 Points
TaJuanna Williams
TaJuanna Williams
26,697 Points

Final Challenge completed...

<?php

class Fish { public $common_name; public $flavor; public $record_weight;

function __construct($name, $flavor, $record){
    $this->common_name = $name;
    $this->flavor = $flavor;
    $this->record_weight = $record;
}

public function getInfo() {
    $output  = "The {$this->common_name} is an awesome fish. ";
    $output .= "It is very {$this->flavor} when eaten. ";
    $output .= "Currently the world record {$this->common_name} weighed {$this->record_weight}.";
    return $output;
}

}

class Trout extends Fish { public $species;

public function construct($name, $flavor, $record, $species) { parent::construct($name, $flavor, $record); $this->species = $species; }

public function getInfo() { return $this->species . $this->common_name . "tastes" . $this->flavor . ". " . "The record" . $this->species . $this->name . "weighed" . $this->record_weight . "."; }

} $brook_trout = new Trout("Trout", "Delicious", "14 pounds 8 ounces", "Brook");

echo $brook_trout -> getInfo();

?>