Assignment 4 : Functions, Class, and Object

Assignment 4 : Functions, Class, and Object

Practice Programs:

1. Write a PHP script to calculate the area and volume of a cylinder using a function.

Answer :

<?php include('../include/topnav.html')?> <html> <div class="container-fluid"> <div class="col-10"> <form action="#" method="post"> <label for="">A : </label> <input type="text" name="a" class="include"> <label for="">B : </label> <input type="text" name="b" class="include"><br><br> <input type="submit" value="Submit" class="btn btn-primary"> <input type="reset" value="Reset" class="btn btn-danger"> </form> </div> </div> </html <?php if(isset($_POST['a'])){ $a = $_POST['a']; $b = $_POST['b']; define('PI','3.14'); function area($r,$h) { $area = 2*PI*$r*($r+$h); echo "<h3>The area of cylinder is :$area</h3>"; } area($a,$b); function vol($r,$h) { $vol = PI*$r*$r*$h; echo "<h3>The volume of cylinder is :$vol</h3>"; } vol($a,$b); } ?>

2. Write a PHP Script to display the sum and average of array elements(Using predefined functions)

Answer :

<?php $a=array(5,15,25); echo array_sum($a)."<br>"; $average = array_sum($a) / count($a); echo $average; ?>

3. Write a PHP script to calculate the factorial of a number using a function.

Answer :

<?php function factorial($n) { if($n ==0) { return 1; } else { return $n * factorial($n-1); } } print_r(factorial(4)); ?>

SET A:

1. Write a PHP script to calculate x y using a function.

Answer :

2. Write a PHP script to define a function Even Odd, which will display even and odd numbers between 1 to 50.

Answer :

<?php function evenodd(){ for($i=0; $i<=50; $i++){ if($i%2==0){ echo "Even Numbers : " . $i."<br>"; } if($i%2!=0){ echo "Odd Numbers : " . $i."<br>"; } } } echo EvenOdd() ?>

3. Write a PHP script to define a function Maximum, which will accept 3 numbers as parameters and returns a maximum of 3 numbers.

Answer :

<?php function maxi($a,$b,$c){ if($a>$b && $a>$c){ echo $a; }elseif($b>$a && $b>$c){ echo $b; }else{ echo $c; } } echo maxi(30,10,20) ?>

4. Write a PHP script to swap two numbers using a function (Use Call by value and Call by reference)

Answer :

<?php function swap($a,$b){ $temp = $a; $a = $b; $b = $temp; echo "Call By Value "; echo "Value of A : ".$a."<br>"; echo "Value of B :".$b; } function swap1(&$a,&$b){ $temp = $a; $a = $b; $b = $temp; echo "<br>Call By Reference"; echo "Value of A : ".$a."<br>"; echo "Value of B :".$b; } echo swap(10,20); $a = 10; $b = 20; swap1($a,$b); ?>

SET B:

1. Write a PHP Script to create a class Fruit that contains data members as Name, Color and Price. Write a member function to accept and display details of Fruit.

Answer :

<?php class Fruit { public $name; public $color; public $price; function __construct($name,$color,$price) { $this->name = $name; $this->color = $color; $this->price = $price; } function get_name() { echo $this->name ." ". $this->color ." ".$this->price; } } $apple = new Fruit("Apple","Red","20"); echo $apple->get_name(); ?>

2. Write a PHP Script to create a class Student that contains data members as Roll_Number, Stud_Name, and Percentage. Write member functions to accept Student information.

Answer :

<?php class student { public $Roll_Number; public $Stud_Name; public $Percentage; function __construct($Roll_Number,$Stud_Name,$Percentage) { $this->Roll_Number = $Roll_Number; $this->Stud_Name = $Stud_Name; $this->Percentage = $Percentage; } } $s1 = new student("1","priya","78"); ?>

3. Write a PHP Script to create a class Book (Book_id, Book_name, Publication, Author, Book_price). Write a member function to accept and display Book details.

Answer :

<?php class Book { public $Book_id; public $Book_name; public $Publication; public $Author; public $Book_price; function __construct($Book_id, $Book_name,$Publication,$Author,$Book_price){ $this->Book_id = $Book_id; $this->Book_name = $Book_name; $this->Publication = $Publication; $this->Author = $Author; $this->Book_price = $Book_price; } function display(){ echo $this->Book_id ." ".$this->Book_name ." ". $this->Publication." ".$this->Author." ".$this->Book_price; } } $b1 = new Book("1","My Rules","RMT Publication","R Jon","200$"); echo $b1->display(); ?>

SET C:

1. Write a PHP script to define a function “DisplayDay”, which will display the day of the current date.

Answer :

<?php function DisplayDay(){ $today = date("D j"); echo $today; } DisplayDay(); ?>

2. Write a PHP script to perform arithmetic operations on two numbers. Write a PHP function to display the result. (Use the concept of function and default parameters)

Answer :

<?php include('../include/topnav.html')?> <html> <div class="container-fluid"> <div class="col-10"> <form action="#" method="post"> <label for="">A: </label> <input type="text" name="a" class="include"> <label for="">B : </label> <input type="text" name="b" class="include"><br><br> <input type="submit" value="Submit" class="btn btn-primary"> <input type="reset" value="Reset" class="btn btn-danger"> </form> <?php if(isset($_POST['a'])){ $a = $_POST['a']; $b = $_POST['b']; function add($num1, $num2=5){ $sum=$num1+$num2; echo "The Addition is : $sum"; } function sub($num1, $num2=5){ $sum=$num1-$num2; echo "The Subtraction is : $sum"; } function mul($num1, $num2=5){ $sum=$num1*$num2; echo "The Multiplication is : $sum"; } function div($num1, $num2=5){ $sum=$num1/$num2; echo "The Division is : $sum"; } add($a,$b) ; echo "<br>"; sub($a,$b) ; echo "<br>"; mul($a,$b) ; echo "<br>"; div($a,$b); } ?> </div> </div> </html>

Team Analytics

Assignment 4 : Functions, Class, and Object

1. Write a PHP script to calculate the area and volume of a cylinder using a function.

2. Write a PHP Script to display the sum and average of array elements(Using predefined functions)

3. Write a PHP script to calculate the factorial of a number using a function.

1. Write a PHP script to calculate x y using a function.

2. Write a PHP script to define a function Even Odd, which will display even and odd numbers between 1 to 50.

3. Write a PHP script to define a function Maximum, which will accept 3 numbers as parameters and returns a maximum of 3 numbers.

4. Write a PHP script to swap two numbers using a function (Use Call by value and Call by reference)

1. Write a PHP Script to create a class Fruit that contains data members as Name, Color and Price. Write a member function to accept and display details of Fruit.

2. Write a PHP Script to create a class Student that contains data members as Roll_Number, Stud_Name, and Percentage. Write member functions to accept Student information.

3. Write a PHP Script to create a class Book (Book_id, Book_name, Publication, Author, Book_price). Write a member function to accept and display Book details.

1. Write a PHP script to define a function “DisplayDay”, which will display the day of the current date.

2. Write a PHP script to perform arithmetic operations on two numbers. Write a PHP function to display the result. (Use the concept of function and default parameters)

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