Chapter 5 Server-Side Scripting (PHP) Textbook Solutions


Fill in the blanks.

(1) PHP is __________ side scripting language.

Answer : Server 

(2) PHP is _________ language i.e. there is no need for compilation.

Answer : interpreted 

(3) A variable starts with __________ sign followed by variable name.

Answer : $

(4) An _________ is a variable, which can hold more than one value at a time.

Answer : array 

(5) Information can be passed to functions through ___________.

Answer : arguments

State True/False

(1) PHP is platform dependent scripting language.

  • True

  • False

Answer :  False

(2) $_POST is an array of variables passed via the URL parameters.

  • True

  • False

Answer : False

(3) A Function is a block of statements that can be used repeatedly in a program.

  • True

  • False

Answer : True

(4)  PHP cannot be embedded along with HTML tags.

  • True

  • False

Answer : False

(5) GET should NEVER be used for sending sensitive information.

  • True

  • False

Answer : True

Multiple Choice Question (1 correct)

(1) The program file of PHP havev _________ extension.

  • .asp

  • .php

  • .js

  • .txt

Answer : .php

(2) A variable declared ___________ a function has global scope.

  • outside

  • anywhere

  • inside

  • none

Answer : outside 

(3) The ____________ function returns a part of a string.

  • trim()

  • ucwords()

  • substr()

  • strpos()

Answer : substr()

Multiple Choice Question. (2 correct)

(1) The _________ and _________ are valid data types in PHP.

a) Double

b) Varchar

c) Integer

d) Array

e) Biglnt

Answer : Integer and Array

(2) Single line comment in PHP is possible using _______, __________.

a) //

b) /* */

c) #

d) <!-- -->

e) $

Answer : //  and   /* */.

Multiple Choice Question. (3 correct)

(1) ln PHP, three types of arrays are ________, _________, __________.

a) Indexed

b) Simple

c) Associative

d) Multidimensional

e) Complex

f) General

Answer : IndexedAssociativeMultidimensional.

(2) The scope of variable can be _______, _______, ______.

a) local

b) global

c) universal

d) static

e) final

f) outside

Answer : localglobalstatic.

Brief Questions.

(1) Explain any two features of PHP?

Answer : 

PHP is the most popular and frequently used worldwide server-side scripting language.

Following are features of PHP:

  1. Simple: It is very simple and easy to use, as compared to other scripting languages.
  2. Interpreted: It is an interpreted language, i.e. there is no need for compilation.
  3. Faster: It is faster than other scripting languages e.g. JSP and ASP.
  4. Open Source: Open source means you need not pay for use of PHP. You can freely download and use it.
  5. Platform Independent: PHP code will be run on every platform, Linux, Unix, Mac OS X, Windows.

(2) What are the rules for declaring variables in PHP?

Answer : 

Following are the rules for declaring variables in PHP:

  1. A variable starts with the $ sign, followed by the name of the variable
  2. A variable name must start with a letter or the underscore character
  3. A variable name cannot start with a number
  4. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and_)
  5. Variable names are case-sensitive ($age and $AGE are two different variables)

(3) What is server-side scripting?

Answer : 

  1. A server is a computer system that serves as a central control of data and programs shared by clients.
  2. The server-side environment that runs a scripting language is termed a web server.
  3. A user's request is fulfilled by running a script directly on the web server.
  4. It is used to provide interactive websites.
  5. Programming languages for server-side programming are PHP, Python, JSP.

(4) List the supported data types in PHP.

Answer : 

  1. String: A string is a sequence of characters. A string can be any text inside quotes. You can use single or double-quotes.
  2. Integer: An integer data type is a non-decimal number between -2,147,483,648 and 2,147,483,647.
  3. Float (floating point numbers): A float (floating-point number) is a number with a decimal point or a number in exponential form.
  4. Boolean: A Boolean represents two possible states. TRUE or FALSE.
  5. Array: An array stores multiple values in one single variable.
  6. NULL: Null is a special data type which can have only one value NULL. A variable of data type NULL is a variable that has no value assigned to it.

(5) Explain any two string manipulation function.

Answer : 

Function Description
strlen() Returns the length of a string (i.e. total no. of characters)
str_word_count() Counts the number of words in a string
strrev() Reverses a string
strpos() Searches for a specific text within a string and returns the character position of the first match and if no match is found, then it will return false
str_replace() Replaces some characters with some other characters in a string

Q7. Write Programs for the following.

(1) Write a PHP code which calculates square of any number using form.

Answer : 

Coding:

<html>
<body>
<form method="post">
Enter a Number
<input type="text" name="sq"><br><br>
<input type="submit" name="submit" value="Sqaure">
</form>
</body>
</html>
<?php
if(isset($_POST['submit']))
{
$sq= $_POST['sq'];
$s=$sq*$sq;
echo "<br><br> The Square of number is: ".$s;
}
?>

(2) Write Programs for the following.

Answer : 

Coding:

<?php
$a="Hypertext Preprocessor";
echo "<br><br> String is ".$a;
echo" <br><br> Words in String is ".str_word_count($a);
?>

(3) Write Programs for the following.

Answer :

Coding:

Form.html
<html>
<body>
<form action="wc.php" method="post">
Enter Name
<input type="text" name="name"><br><br>
Enter Password
<input type="password" name="pass"><br><br>
<input type="submit" name= "submit" value="Submit">
</form>
</body>
</html>
wc.php
<html>
<body>
Welcome
<?php
echo $_POST["name"]; ?> <br><br>
Your Password is
<?php
echo $_POST["pass"];
?>

 

Other HSC IT Chapter Textbook Solutions

(Others Chapters textbook solution will added soon)
Advanced Web Desgining
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Computerised Accounting with GST
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E-Commerce and E-Governance
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ADVANCED JAVASCRIPT
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Emerging Technologies (IOT, Cloud computing, AI,5G)
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Server-Side Scripting (PHP)
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Enterprise Resource Planning (ERP)
CLICK HERE