Question

How to remove the letters from word1 if they exist in word2 with PHP

Answer 1

function removeCommonLetters($word1, $word2) {
    $result = '';
    $length = strlen($word1);

    for ($i = 0; $i < $length; $i++) {
        if (strpos($word2, $word1[$i]) === false) {
            $result .= $word1[$i];
        }
    }
    
    return $result;
}

$word1 = "forest";
$word2 = "tor";
$result = removeCommonLetters($word1, $word2);

echo $result; 



/*
run:

fes

*/

 

70+ SQL courses for beginners and professionals