php call parent constructor

1
2<?php
3class BaseClass {
4    function __construct() {
5        print "In BaseClass constructor\n";
6    }
7}
8
9class SubClass extends BaseClass {
10    function __construct() {
11        parent::__construct();
12        print "In SubClass constructor\n";
13    }
14}
15
16class OtherSubClass extends BaseClass {
17    // inherits BaseClass's constructor
18}
19
20// In BaseClass constructor
21$obj = new BaseClass();
22
23// In BaseClass constructor
24// In SubClass constructor
25$obj = new SubClass();
26
27// In BaseClass constructor
28$obj = new OtherSubClass();
29?>
30
31

1<?php
2class BaseClass {
3   function __construct() {
4       print "En el constructor BaseClass\n";
5   }
6}
7
8class SubClass extends BaseClass {
9   function __construct() {
10       parent::__construct();
11       print "En el constructor SubClass\n";
12   }
13}

1<?php
2/**
3 *Inheritance:  It means accessing property of parent class from child class.
4 * 
5 * */
6class Animal
7{
8    function __construct()
9    {
10        echo '<br>construct1';
11    }
12    function fun1() 
13    {
14        echo '<br>fun1';
15    }
16}
17class Dog extends Animal
18{
19    function __construct()
20    {
21        // if want to call parent class constructor 
22        parent::__construct();
23        echo '<br>construct2';
24    }
25    function fun1()
26    {
27        echo '<br>Dog class function called';
28    } 
29}
30$obj = new Dog();
31$obj ->fun1();
32?>