Question

Is there any built-in PHP function through which I can count the sum of indexes of letters of the alphabet found in a string?

<?php
$a = "testword";
echo "Count of Characters is: " . strlen($a); 
?>

Now I want to get a cumulative “total” of this word.

e.g.

• A is the first letter of the alphabet so it maps to 1
• B is the second letter of the alphabet so it maps to 2
• C is the third letter of the alphabet so it maps to 3
• D is the fourth letter of the alphabet so it maps to 4

So the word ABCD gives 1+2+3+4=10

Similarly I need a function for “testword” or any word.

Answer 1

function WordSum($word)
{
    $cnt = 0;
    $word = strtoupper(trim($word));
    $len = strlen($word);

    for($i = 0; $i < $len; $i++)
    {
        $cnt += ord($word[$i]) - 64; 
    }

    return $cnt;
}

var_dump(WordSum("testword"));