Conditional statements :-
1.if (one way selection )
2.if else(two way selection )
3.if else if
4. switch case ( 3 & 4 both are
multiway selection )
If:-
<?php
$n=8;
If ($n==10)
{
Echo” value
is 10”;
}
?>
If else:-
<?php
$p=50;
if(condition
)
{
echo"
statement 1";
}
else
{
echo"
statement 2";
}
?>
If else if :-
<body>
<?php
$p=50;
if(cond 1)
{
echo"
statement 1";
}
else if (cond 2)
{
echo"
statement 2";
}
else if (cond 3)
{
echo"
statement 3";
}
else if(cond
4)
{
echo"
statement 4";
}
else
{
echo"
statement 5";
}
?>
Switch Case:-
<body>
<?php
$ch="a";
$a=10;
$b=5;
switch
($ch){
case 'a':
{
Case a
formula
break;
}
case 'b':
{
Case b
formula
break;
}
case 'c':
{
Case c
formula
break;
}
default:
{
echo" you entered wrong value ";
break;
}
}
Q1.Enter two
numbers and find out greatest no. using if else?
Solution
Code:-
<title>rahuljaincse.blogspot.com</title>
</head>
<body>
<?php
$b=20;
if($b>18)
{
echo"person
is eligible for voting:".$b;
}
else
{
echo"person
is not eligible for the voting ";
}
?>
</body>
Q2.Enter any
age of person and find out person is eligible for voting or not?
Solution
Code:-
<title>rahuljaincse.blogspot.com</title>
</head>
<body>
<?php
$b=10;
if($b%5==0)
{
echo"your
digit is divisible by 5:";
}
else
{
echo"your
digit is not divisible by 5 ";
}
?>
</body>
</html>
Q3.Enter any
digit and find out digit is devisible by
5 or not?
<?php
$a=10;
If($a%5==0)
{
Echo “number
is devisible by 5”;
}
Else
{
Echo “number
is not devisible by 5”;
}
?>
Q4.Enter any
percentage of students and print student belongs to which category?
80%---------A+
70-80%--------A
60-70%----------B+
50-
60%------------B
40-50%-----------------C
Less than 40
-----------Fail
Solution
code:-
<title>
rahuljaincse.blogspot.com</title>
</head>
<body>
<?php
$p=50;
if($p>80)
{
echo"
grade is A+";
}
else if ($p<=80&&$p>70)
{
echo"
grade is A";
}
else if ($p<=70&&$p>60)
{
echo"
grade is B+";
}
else
if($p<=60&&$p>50)
{
echo"
grade is B";
}
else
if($p<=50&&$p>40)
{
echo"
grade is C";
}
else if
($p<=40)
{
echo"
grade is Fail";
}
?>
</body>
</html>
Q5.calculate
area of circle ,Rectangle ,and triangle using Switch case?
Solution
Code:-
<title>rahuljaincse.blogspot.com</title>
</head>
<body><?php
$ch="circle";
$a=10;
$b=5;
switch
($ch){
case 'triangle':
{
$c=1/2*$a*$b;
echo"area of triangle is".$c;
break;
}
case 'circle':
{
$c=3.14*$a*$a;
echo"area of circle is".$c;
break;
}
case 'rectangle':
{
$c=$a*$b;
echo"area of rectangle is".$c;
break;
}
default:
{
echo" you entered wrong value ";
break;
}
}
