Constructor In PHP

In this article I expalin PHP cnstructor.
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Constructor

The constructor is an "OOP" feature. PHP 5 has OOP capability and gives the authority to developers to declare a constructor method for classes. I will first explain what a constructor is. The answer is "A constructor is a special type of method that is automatically called when you create a new instance of the class". The OOP constructor has a number of advantages, they are:

  • Constructors can accept parameters, that are assigned to specific object fields at creation time.
  • Constructors can call class methods or other functions.
  • Class constructors can call on other constructors, including those from the parent class.

Example

<?php
class
Myclass
{

function
__construct()
{

print
"Parent class constructor.</br>";
}
}

class
Baseclass extends Myclass
{

function
__construct()
{

parent:
:__construct();
print " Child Class constructor\n"
;
}
}
$
obj = new Myclass();
$
obj = new Baseclass();
?>


Output

constructor-in-php.jpg

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