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

Add a getInfo method to your Trout class that returns a string containing the common_name, flavor, record_weight, and sp

Challenge Task 6 of 7

I have no idea what to do :(

fish.php
<?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;

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

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

}

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

?>

3 Answers

Tiffany McAllister
Tiffany McAllister
25,806 Points

Have a look at the getInfo() function of the Fish class above to give you an idea :)

Your primary problem is that you do not use all of the variables. Also, if you use double quotes you can place the variables inside the quotes without adding concatenation because PHP evaluates the variable before the echo when using double quotes. Singles quotes will echo the variable name, not the value, so you would have to concatenate. This should pass:

<?php
public function getInfo() {
    return "$this->species $this->common_name tastes $this->flavor.  The record weight $this->species $this->common_name is $this->record_weight.";
Sam Donald
Sam Donald
36,305 Points

I got it to work but can someone give me some help understanding this a bit better.

Why do we need to set

$this->common_name

and

$this->record_weight

?

Haven't we assigned those values to $name and $record?