PHP Object Oriented Programming (OOP): Classes (2/13)

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[DaBananaboat]

For those who found the explanation about why the $person variable in the Person class was an error and that it needed to be $this instead, (I found it unclear the first time, the toning of when he said "Okay. Here we need to change this 'person' variable to 'this'. And basically what 'this' means is this current instance." was a little off so I had to re-watch it a few times to understand) here's a little more information about it.

The reserved keyword $this is a reference to the current instance or object. Let's say you have this class:

class Car
{
    public $brand;
    public $model;

    public function identify()
    {
        return 'This is a ' . $this->brand . ' ' . $this->model;
    }
}

Which are instantiated like so:

$car1 = new Car;
$car1->brand = 'Opel';
$car1->model = 'Astra';

$car2 = new Car;
$car2->brand = 'Nissan';
$car2->model = 'Micra';

Using the following line:

echo $car1->identify();

will result in:

This is a Opel Astra

$this is actually a reference to $car1 in this case.

I hope this clears things up for the ones that didn't quite follow, like I did.

# Edit, "Class" should in lowercase... oops.

[NoahNobody]

Oh, I get it now. The stdClass is for defining objects that don't have a class. You probably mentioned it the last video, but I couldn't get my head around it until I saw the example of the person object being defined from the Person class.

[odunladeoluwaseun]

at last someone made a video for me. After wasting lot of time trying to get what this is all about. Thanks, hopefully I can learn oop now

[cjvaans]

Nice for you to add subtitles. Makes me more understandable

[snaixs]

Good job! Well done! Like for all the videos.

[Iamherp]

what editor so u use, new to mac. for the php of course

[charlietann]

class person 
public $name;
public $age;

$person = new person
$person->zzname = 'John123';
echo $person->zzname;

Returns: John123

What is the point of declaring $name in the class, if we can assign any property to the person object via zzname?

[Isaacstation]

how do you make sublime ask you to name a new project when you open it?

[ihabs]

You are amazing man you explained everythings well thx alot...

[minhhoang]

is the sign "->" in php same as "." in java?

[shahinmolawi]

I' am stil getting a syntax error, unexpected '$person' (T_VARIABLE)

[DarKcS]

Is that Sublime? What's the theme? :D Thx