×
Night mode
Sign up
Login
Results: 1580
Notes
  • Newest first
  • Oldest first
  • Newest first(All)
  • Oldest first(All)
__clone method and clone function 
clone
function clones the object and 
__clone
method is going to call when the object gets cloned 
class User {
    public $username;
    public $friends = ['Tom','David'];

    function __construct($name) {
        $this->username = $name;
        print $this->username . "'s object is created'\n";
    }

    function __clone() {
        print $this->username . "'s object is cloned'\n";
    }
}
$user1 = new User('Tom');
$user2 = clone $user1;
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
access modifiers / visibility modifiers CODE 
public
- visible from anywhere 
private
- visible only for the owner class 
protected
- visible only for the owner and it's child classes 
class User {
    public $username;
    public $friends = ['Tom','David'];

    function __construct($name) {
        $this->username = $name;
        print $this->username . "'s object is created'\n";
    }

    private function მარტივიჯამი($num1,$num2) {
        return $num1 + $num2;
    }
}
class Admin extends User{
    function sumNumbers($num1,$num2) {
        return $this->მარტივიჯამი($num1,$num2);
    }
}
$admin1 = new Admin('Tom');

echo $admin1->sumNumbers(4,5);
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
getters and setters
Main benefit of using getters and setters is to filter & check values according to current needs
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
Inheritance example CODE
The child class extends parent class means that it borrows properties and methods from its parent
class User {
    public function მარტივიჯამი($num1,$num2) {
        return $num1 + $num2;
    }
}
class Admin extends User{
    
}
$admin1 = new Admin('Tom');

echo $admin1->მარტივიჯამი(4,5);
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
child class without constructor inherits BaseClass's constructor
If there is no constructor in child class, then parent class constructor will be called (when appropriate parameters are passed) 
class BaseClass {
    function __construct() {
        print "In BaseClass constructor\n";
    }
}

class SubClass extends BaseClass {
    function __construct() {
        parent::__construct();
        print "In SubClass constructor\n";
    }
}

class OtherSubClass extends BaseClass {
    // inherits BaseClass's constructor
}

// In BaseClass constructor
$obj = new BaseClass();

// In BaseClass constructor
// In SubClass constructor
$obj = new SubClass();

// In BaseClass constructor
$obj = new OtherSubClass();
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
PHP official doc
1
call static method inside and outside of a class
Call the method inside a class
self::celsiusToFarenheit(20);
Outside a class
Wheather::celsiusToFarenheit(20);
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
Use static property inside and outside of a class
Use static property inside a class
echo self::$someProperty;
Outside a class
Wheather::$someProperty;
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
Object Oriented PHP Tutorial
1
abstract class 
abstract class AbstractClass
{
    // Force Extending class to define this method
    abstract protected function getValue();
    abstract protected function prefixValue($prefix);

    // Common method
    public function printOut() {
        print $this->getValue() . "\n";
    }
}
About abstract class: 
Classes defined as abstract cannot be instantiated
Any class that contains at least one abstract method must also be abstract
Methods defined as abstract simply declare the method's signature - they cannot define the implementation
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
PHP official doc
1
interface example CODE
In this example class 
Circle
implements 
CircleAbstract
interface. Therefore it must define 
getArea()
and 
getPerimeter()
methods 
interface CircleAbstract {
    // Force Extending class to define these methods
    function getArea();
    function getPerimeter();
} 

class Circle implements CircleAbstract {
    static $PI = 3.1415926536;
    public $radius;
    
    public function __construct($radius) {
        $this->radius = $radius;
    }

    public function getPI() {
        return self::$PI;
    }
    
    public function getArea() {
        return pow($this->radius, 2) * self::$PI;
    }
    
    public function getDiameter() {
        return $this->radius * 2;
    }
    
    public function getPerimeter() {
        return $this->radius * 2 * self::$PI;
    }
}

$circle1 = new Circle(5);
echo "\nPI: " . $circle1->getPI();
echo "\nArea: " . $circle1->getArea();
echo "\nDiameter: " . $circle1->getDiameter();
echo "\nPerimeter: " . $circle1->getPerimeter();
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
1
class implements several interfaces CODE
One class implements several interfaces and takes responsibility to define all methods from both interfaces. Also defines several private methods additionally
interface int1 {
    // Force Extending class to define these methods
    function getArea();
} 

interface int2 {
    function getPerimeter();
} 

class Circle implements int1, int2 {
    static $PI = 3.1415926536;
    public $radius;
    
    public function __construct($radius) {
        $this->radius = $radius;
    }

    public function getPI() {
        return self::$PI;
    }
    
    public function getArea() {
        return pow($this->radius, 2) * self::$PI;
    }
    
    public function getDiameter() {
        return $this->radius * 2;
    }
    
    public function getPerimeter() {
        return $this->radius * 2 * self::$PI;
    }
}

$circle1 = new Circle(5);
echo "\nPI: " . $circle1->getPI();
echo "\nArea: " . $circle1->getArea();
echo "\nDiameter: " . $circle1->getDiameter();
echo "\nPerimeter: " . $circle1->getPerimeter();
by Valeri Tandilashvili
4 years ago
0
PHP
OOP
1
Results: 1580