What Are Classes and Objects in PHP

by CodeCapsule

🔷 What Are Classes and Objects in PHP?

✅ Class → A blueprint or template

✅ Object → A real instance created from a class

Real-life example:

Class = “Car blueprint”
Object = “Red BMW car”, “Black Audi car”

🟦 1. Creating Your First Class in PHP

This only defines a blueprint; no real object exists yet.

🟩 2. Adding Properties (Variables inside class)

Properties = data of the object.

🟧 3. Adding Methods (Functions inside class)

Method = action that object can do.

🟥 4. Creating Objects from a Class

🟪 5. Creating Multiple Objects

Each object has its own data.

🟨 6. Constructor Method (Automatically Runs When Object is Created)

__construct() runs automatically when you create an object.

class Car {
public $color;
public $brand;

public function __construct($color, $brand) {
$this->color = $color;
$this->brand = $brand;
}

public function info() {
echo "Car: $this->color $this->brand";
}
}

$car = new Car("Red", "Toyota");
$car->info();


Output:
Car: Red Toyota

class Car {

public $color;

public $brand;

public function __construct($color, $brand) {

$this->color = $color;

$this->brand = $brand;

}

public function info() {

echo "Car: $this->color $this->brand";

}

$car = new Car("Red", "Toyota");

$car->info();

Output:

Car: Red Toyota

🟫 7. $this Keyword (Very Important)

$this refers to current object.

Example:

Means…
Set object’s color = value coming from constructor.

🟦 8. Full Simple Example

class Student {
public $name;
public $age;

public function setData($n, $a) {
$this->name = $n;
$this->age = $a;
}

public function getData() {
echo "Name: $this->name, Age: $this->age";
}
}

$st1 = new Student();
$st1->setData("Rahul", 22);
$st1->getData();

class Student {

public $name;

public $age;

public function setData($n, $a) {

$this->name = $n;

$this->age = $a;

}

public function getData() {

echo "Name: $this->name, Age: $this->age";

}

$st1 = new Student();

$st1->setData("Rahul", 22);

$st1->getData();

🎉 Summary (Easy Table)

Term	Meaning
Class	Blueprint/template
Object	Real entity created from class
Property	Variables inside class
Method	Functions inside class
Constructor	Auto-run method
$this	Refers to current object

What Are Classes and Objects in PHP

🔷 What Are Classes and Objects in PHP?

✅ Object → A real instance created from a class

🟦 1. Creating Your First Class in PHP

🟩 2. Adding Properties (Variables inside class)

🟧 3. Adding Methods (Functions inside class)

🟥 4. Creating Objects from a Class

🟪 5. Creating Multiple Objects

🟨 6. Constructor Method (Automatically Runs When Object is Created)

🟫 7. $this Keyword (Very Important)

🟦 8. Full Simple Example

🎉 Summary (Easy Table)

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What Are Classes and Objects in PHP

🔷 What Are Classes and Objects in PHP?

✅ Object → A real instance created from a class

🟦 1. Creating Your First Class in PHP

🟩 2. Adding Properties (Variables inside class)

🟧 3. Adding Methods (Functions inside class)

🟥 4. Creating Objects from a Class

🟪 5. Creating Multiple Objects

🟨 6. Constructor Method (Automatically Runs When Object is Created)

🟫 7. $this Keyword (Very Important)

🟦 8. Full Simple Example

🎉 Summary (Easy Table)

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