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

Arif Zuhairi
Arif Zuhairi
1,637 Points
Posted by Arif Zuhairi
Arif Zuhairi
1,637 Points

Problem returning string in getInfo method in step 6

Does the code in getInfo method wrong? and what is the use of { } that cover the $this? I hope that you can provide some explanations..Thank you

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;
  }

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

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

1 Answer

Daniel Johnson
Daniel Johnson
104,132 Points
Daniel Johnson
Daniel Johnson
104,132 Points

Inside your getInfo method $this->name should be $this->common_name and $this->record should be $this->record_weight. I also prefer to format my strings with single quotes and without using the brackets for variables, but either way will work just fine.

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 function getInfo()
    {
        return $this->common_name.' '.$this->flavor.' '.$this->record_weight.' '.$this->species;
    }

}

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

echo $brook_trout->getInfo();