PHP program using sum of digits

Q. Sum of Digits in php 

 Example :-

<?php

$number =1222;

$sum=0;

$rem=0;

for($i=0;$i<=strlen($number);$i++)

{

    $rem = $number% 10;

    $sum = $sum + $rem;

    $num = $number/10;

}

echo " number is $number = Addition of digits

<br> Answer is $sum";

?>

Sum of Digits in php 

Output:-

Q. Sum of digit using form  php

Example :-

<form method="post">

    Enter number

    <input type="number" name="number"><br><br>

    <input type="submit" value="submit">

</form>

<?php

if( $_POST)

{

$number =$_POST['number'];

$sum=0;

$rem=0;

for($i=0; $i<=strlen($number); $i++)

{

    $rem = $number% 10;

    $sum = $sum + $rem;

    $number = $number/10;

}

echo " number is $number Addition of digits

<br> Answer is $sum";

}

?>

Sum of digit using form  php 

Output :-

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