PHP Interview Questions and Answers for While Loop Part – 2
by TechVidvan Team
Program 1
<html>
<head><title>PHP Loops</title>
<body>
<center>
<?php
// Program for reverse of numbedr
// $n=245;
// $s=0;
// while($n!=0)
// {
// $r=$n%10;
// $s=$s+$r;
// $n=$n/10;
// }
// echo "<br>Addition is=".$s;
// Program for addition of individual digit 123 === 1 +2 +3
$n=245;
$s=0;
while($n!=0)
{
$r=($n%10);
$s=$s*10+$r;
$n=(int)($n/10);
}
echo $s;
/*
// find out reverse of number 123
// number is palindrom or not
// armstrong or not
*/
?>
</center>
</body>
</html>Program 2
<html>
<head><title>PHP Loops</title>
<body>
<center>
<?php
//153
// 1 + 125 +27=153
// Armstrong
$n=123;
$m=$n;
$s=0;
while($n<>0)
{
$r=$n%10;
$s=$s+($r*$r*$r);
$n=(int)($n/10);
}
// echo "Reverse of ".$m." is ".$s;
if($m==$s)
echo "Number is armstrong";
else
echo "Number is not armstrong";
/// prime or not
// n power p n to power p
// Reverse of Number
// $n=656;
// $m=$n;
// $s=0;
// while($n<>0)
// {
// $r=$n%10;
// $s=$s*10+$r;
// $n=(int)($n/10);
// }
// // echo "Reverse of ".$m." is ".$s;
// if($m==$s)
// echo "Number is Palindrom";
// else
// echo "Number is not Palindrom";
?>
</center>
</body>
</html>
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TechVidvan Team
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