12th Computer Applications - PHP Conditional Statements Model Question Paper | QB365

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12th Computer Applications - PHP Conditional Statements Model Question Paper

Published on: 03/12/2019

PHP Conditional Statements

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Std: 12th Standard - Computer Applications

chapter: - Model Question paper

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Questions:

Multiple Choice Question

5 x 1 = 5

What will be the output of the following PHP code ?
< ?php
if (-100)
print “hi” ;
else
print “how are u”;
? >

(a)

how are u

(b)

(c)

error

(d)

no output

What will be the output of the following PHP code ?
< ?php
$$$x = 10;
$$$y = 20;
if ($$$x > $$$y + $$$y != 3)
print “hi” ;
else
print “how are u”;
? >

(a)

how are u

(b)

(c)

error

(d)

no output

What will be the output of the following PHP code ?
< ?php
$$$ a = “”;
if ($$$a)
print “all”;
if______
else
print “some”;
? >

(a)

all

(b)

some

(c)

error

(d)

no output

Statement which is used to make choice between two options and only option is to be performed is written as

(a)

if statement

(b)

if else statement

(c)

then else statement

(d)

else one statement

What will be the output of the following PHP code ?
< ?php
$$$x;
if ($$$x == 0)
print “hi” ;
else
print “how are u”;
print “hello”
? >

(a)

how are uhello

(b)

hihello

(c)

(d)

no output

Generic 2

5 x 2 = 10

Write the syntax of If statement.

What IS"if statement" in PHP?

Compare if and if else statement.

Write the Syntax of Switch statement.

10.

What are the different types of conditional statements in PHP?

Generic 3

5 x 3 = 15

11.

Write, a PHP program to display independenc day and republic day the greetings using If elseif else statement.

12.

Write a php program to check whether the given number is positive or negative.

13.

Write a PHP code to display "Have a nice weekend!" if the current day is Friday, otherwise it will output "Have a nice day!" using if-else statement.

14.

Differentiate if statement and if elseif else statement.

15.

Differentiate Switch and if else statement.

Generic 5

2 x 5 = 10

16.

Explain the if elseif else statement. With suitable example.

17.

Explain the working of Conditional Statements in PHP?

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Answers Key:

Multiple Choice Question

5 x 1 = 5

(b)
hi

(b)
hi

(b)
some

(b)
if else statement

(b)
hihello

Generic 2

5 x 2 = 10

if (condition)
{
Execute statement(s) if condition is true;
}

The If Statement is a way to make decisions based upon the result of a condition.

If Statement	If else Statement
if statement executes some code if one condition is true.	If statement executes some code if the condition is true and else part of code executes if the condition is false.

switch (n)
{
case label 1:
code to be executed if n=labeI1;
break;
case label 2:
code to be executed if n=labeI2;
break;
case label 3:
code to be executed if n=labeI3;
break;
...
default:
code to be executed if n is different from all labels;
}

10.

There are several types of conditional statements in PHP. They are
1. 'if' statement
2. 'if...else' statement
3. 'if...elseif...else' statement
4. 'switch' statement

Generic 3

5 x 3 = 15

11.

< ?php
＄x = "August";
if (＄x == "January'') {
echo "Happy Republic Day";
}
elseif (＄x == "August'') {
echo "Happy Independence Day!!!";
}
else{
echo "Nothing to show";
}
? >

12.

< ?php
＄x = -12;
if (＄x > 0)
{
echo "The number is positive";
}
else{
echo "The number is negative";
}
? >

13.

< ?php·
＄d=date("D'');
if(＄d=="Fri'')
{
echo"Have a nice weekend!";
}
Else
{
echo"Have a nice day!";
}
? >

14.

No.	if elseif else statement	if statement
1	If-elseif-else statement is a combination of if-else statement.	If statement executes a single statement
2	More than one statement can execute the condition based on user needs	Only one statement can execute
3	If the condition if false more alternatives are there.	If the condition is false, there is no alternative.

15.

Switch Statement	If else statement
Switch statement uses single expression for multiple choices.	if-else statement uses multiple statement for multiple choices.
It test only for equality.	It test for equality as well as for logical expression.
Statement will be executed is decided by user.	Evaluates any type
If switch statements does not match any cases, the default statements is executed.	If the condition fails, then by default the else statement is executed.

Generic 5

2 x 5 = 10

16.

If elseif else statement in PHP:
If-elseif-else statement is a combination of if-else statement. More than one statement can execute the condition based on user needs.
Syntax:
if (1^st condition)
{
Execute statement(s) if condition is true;
}
elseif(2^nd condition)
{
Execute statement(s) if 2^nd condition is true;
}
else
{
Execute statement(s) if both conditions are false;
}
Example Program:
＄Pass_Mark=35;
＄first_class=60;
＄Student_Mark= 70;
if (＄Student_Mark > = ＄first_ class){
echo "The Student is eligible for the promotion with First Class";
}
elseif (＄Student_Mark >= ＄Pass_Mark){
echo "The Student is eligible for the promotion";
}
else {
echo "The Student is not eligible for the promotion";
} ?>

17.

Conditional statements in PHP are implemented by the following types:
(i) if Statement
(ii) if... else Statement
(iii) if... elseif... else Statement
(iv) switch Statement
(i) If statement in PHP:
If statement executes a statement or a group of statements if a specific condition is satisfied as per the
user expectation.
Syntax:
if (condition)
{
Execute statement(s) if condition is true;
}
(ii) If else statement in PHP:
If statement executes a statement or a group of statements, if a specific condition is satisfied by the user
expectation. When the condition gets false (fail) the else block is executed.
Syntax:
if (condition)
{
Execute statement(s) if condition is true;
}
else
{
Execute statement(s) if condition is false;
(iii) If elseif else statement
It is a combination of if-else statement. More than one statement can execute the condition based on user needs.
Syntax:
if (1st condition)
{
Execute statement(s) if condition is true;
}
elseif (2nd condition)
{
Execute statement(s) if 2nd condition is true;
}
else
{
Execute statement(s) if both conditions are false;
}
(iv) Switch Statement
It is used to perform different actions based on different conditions.
Syntax:
switch (n) {
case label 1:
code to be executed if n-label1;
break;
case label2:
code to be executed if n=label2;
break;
***
default:
code to be executed if n is different from all labels;
}