What are some recommended resources or tutorials for beginners looking to improve their understanding of PHP encryption techniques like Caesar cipher?

Beginners looking to improve their understanding of PHP encryption techniques like the Caesar cipher can benefit from resources such as online tutorials, PHP documentation, and coding websites like Stack Overflow. These resources can provide step-by-step explanations, examples, and best practices for implementing encryption algorithms in PHP. 

<?php
function caesarCipher($string, $shift) {
    $result = "";
    $length = strlen($string);
    
    for ($i = 0; $i < $length; $i++) {
        $char = $string[$i];
        
        if (ctype_alpha($char)) {
            $ascii = ord(ucfirst($char));
            $offset = ord(ctype_upper($char) ? 'A' : 'a');
            $result .= chr(fmod($offset + $shift + $ascii - $offset, 26) + $offset);
        } else {
            $result .= $char;
        }
    }
    
    return $result;
}

$string = "Hello, World!";
$shift = 3;
$encryptedString = caesarCipher($string, $shift);
echo "Original String: " . $string . "<br>";
echo "Encrypted String: " . $encryptedString;
?>

Keywords

PHP encryption Caesar cipher tutorials resources

Related Questions