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PHP Object-Oriented PHP Basics Building a Collection Collection Objects

Posted by Keith Miller
Keith Miller
2,310 Points

I am not completely clear on what I am doing here. Can anyone clarify the instructions?

I've been slightly confused in the least few videos and examples.

index.php 
<?php

// add code below this comment
class Subdivision
{
  public $houses;

  public static function filterHouseColor($color){
  Subdivision::filterHouseColor($color);
  }

  }
}
?>
Ben Payne
Ben Payne
1,464 Points

Hey Keith - Give this a shot:

<?php

class Subdivision
{
  public $houses;

  public function filterHouseColor($color)
  {
    $filteredHouses = [];    

    foreach ($this->houses as $house)
    {
      if ($house->roof_color == $color || $house->wall_color == $color) {
        $filteredHouses[] = $house;
      }
    }

    return $filteredHouses;
  }
}

?>

Cheers,

Ben

Keith Miller
Keith Miller
2,310 Points

Hi Ben, your answer is correct. I am understanding up to the filteredHouses array. I feel as if I am getting lost in the instructions.

Also, is your entry marked as an answer? I can't seem to mark it as the correct answer.

1 Answer

Ben Payne
Ben Payne
1,464 Points

Hey Keith - Here is a little more context. I added a House class so you can kind of see what this would look like. Hopefully that helps.

<?php

class House
{
    public $roof_color;

    public $wall_color;

    /**
     * House constructor.
     * @param $roof_color
     * @param $wall_color
     */
    public function __construct($roof_color, $wall_color)
    {
        $this->roof_color = $roof_color;
        $this->wall_color = $wall_color;
    }
}

class Subdivision
{
    private $houses;

    /**
     * Subdivision constructor.
     * @param $houses
     */
    public function __construct($houses)
    {
        $this->houses = $houses;
    }

    public function filterHouseColor($color)
    {
        $filteredHouses = [];

        foreach ($this->houses as $house) {
            if ($house->roof_color == $color || $house->wall_color == $color) {
                $filteredHouses[] = $house;
            }
        }

        return $filteredHouses;
    }
}

$houseA = new House('green', 'grey');
$houseB = new House('brown', 'yellow');

$subdivision = new Subdivision([$houseA, $houseB]);

$filteredHouses = $subdivision->filterHouseColor('green');

?>

Cheers,

Ben

Keith Miller
Keith Miller
2,310 Points

Thank you so much Ben. That helps out a ton.