To check whether an alphabet is vowel or consonant
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Character:
<input
type="text" name="chr" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$ch =
$_POST['chr'];
if(isset($_POST['submit']))
{
if (($ch >= 'a' && $ch <= 'z')
|| ($ch >= 'A' &&$ch <= 'Z'))
{
If ($ch=='a' || $ch=='A' || $ch=='e' ||
$ch=='E' || $ch=='i' || $ch=='I' || $ch=='o' || $ch=='O' || $ch== 'u' ||
$ch=='U')
{
echo " $ch is a vowel</br> ";
}
else
{
echo " $ch is not a vowel </br> ";
}
}
}
?>
To check a number is Odd or Even?
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Number:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$number=
$_POST['num'];
if(isset($_POST['submit']))
{
if ($number%2 == 0)
{
echo " It is Even
Number</br> ";
}
else
{
echo " It is Odd Number </br> ";
}
}
?>
To
check whether a year is leap year or Not
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter Year:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$year=
$_POST['num'];
if(isset($_POST['submit']))
{
if ($year%4 == 0)
{
echo " It is Leap
Year</br> ";
}
else
{
echo " It is not Leap Year </br>
";
}
}
?>
Calculate
sum of digits of a number
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Number:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$number=
$_POST['num'];
$sum = 0;
if(isset($_POST['submit']))
{
$t = $number;
while ($t != 0)
{
$remainder = $t % 10;
$sum = $sum + $remainder;
$t= $t / 10;
}
echo "Sum of digits is $sum";
}
?>
Calculate
Factorial Number
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Number:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$number=
$_POST['num'];
$fact=1;
if(isset($_POST['submit']))
{
while($number>0)
{
$fact=$fact*$number;
$number--;
}
echo "factorial is $fact";
}
?>
Find square and cube of a given number
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Number:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$number=
$_POST['num'];
if(isset($_POST['submit']))
{
$square=$number*$number;
$cube=$number*$number*$number;
echo "Square of the number is
$square</br>";
echo "Cube of the number is $cube";
}
?>
Print "Hello World" without using
semi colon
<?php
if(echo("Hello World"))
{
}
?>
To Check
Whether a Number is Prime or Not
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter
Number:
<input
type="text" name="num" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$number=
$_POST['num'];
$pm = 0;
if(isset($_POST['submit']))
{
for($i=1;
$i<=$number; $i++)
{
if($number%$i==0)
{
$pm++;
}
}
if($pm==2)
{
echo "$number is a prime
number</br>";
}
else
{
echo "$number is not a prime
number</br>";
}
}
?>
Swapping of two numbers
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter 1st Number:
<input
type="number" name="num1" /><br>
Enter 2nd Number:
<input
type="number" name="num2" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$x=
$_POST['num1'];
$y=
$_POST['num2'];
if(isset($_POST['submit']))
{
echo
"Value of x before swapping:$x</br>";
echo
"Value of y before swapping:$y</br>";
$temp=$x;
$x=$y;
$y=$temp;
echo
"Value of x after swapping: $x</br>";
echo
"Value of y after swapping: $y</br>";
}
?>
Swapping of two numbers without using
third variable
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter 1st Number:
<input
type="number" name="num1" /><br>
Enter 2nd Number:
<input
type="number" name="num2" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$x=
$_POST['num1'];
$y=
$_POST['num2'];
if(isset($_POST['submit']))
{
echo
"Value of x before swapping:$x</br>";
echo
"Value of y before swapping:$y</br>";
$x=$x+$y;
$y=$x-$y;
$x=$x-$y;
echo
"Value of x after swapping: $x</br>";
echo
"Value of y after swapping: $y</br>";
}
?>
Calculate Area of triangle
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter base:
<input
type="number" name="num1" /><br>
Enter height:
<input
type="number" name="num2" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$b=
$_POST['num1'];
$h=
$_POST['num2'];
if(isset($_POST['submit']))
{
$result=0.5*$b*$h;
echo
"Area of triangle is:$result</br>";
}
?>
Find the Largest Number
Among Three Numbers
Demo.html
<html>
<body>
<form
method="post" action="result.php">
Enter Number1:
<input
type="number" name="num1" /><br>
Enter Number2:
<input
type="number" name="num2" /><br>
Enter Number3:
<input
type="number" name="num3" /><br>
<input type="submit"
name="submit" value="Check">
</form>
</body>
</html>
result.php
<?php
$a=
$_POST['num1'];
$b=
$_POST['num2'];
$c=
$_POST['num3'];
if(isset($_POST['submit']))
{
if($a>=$b
&& $a>=$c)
{
echo "The largest number is
$a</br>";
}
else if($b>=$a && $b>=$c)
{
echo "The largest number is
$b</br>";
}
else
{
echo "The largest number is
$c</br>";
}
}
?>
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