toast-script.php

<?php

/**
 * @author CMDR SamMakesCode
 */

$phrase = "To the jewel that burns on the brow of the mother of galaxies! To the whisperer in witchspace, the siren of the deepest void! The parent's grief, the lover's woe, and the yearning of our vagabond hearts. To Raxxla!";

// Remove non-alpha characters
$phrase = str_replace(' ', '', $phrase);
$phrase = str_replace('!', '', $phrase);
$phrase = str_replace(',', '', $phrase);
$phrase = str_replace('.', '', $phrase);
$phrase = str_replace('\'', '', $phrase);

// The key we're using to find stuff
$key = 'raxxla';

// Start at position 0
$positionInToast = 0;

// Create an array to store the characters as we go
$characters = [];

// For each character in the key...
foreach (str_split($key) as $character) {
    // Get the key's character number. E.g. a = 1, b = 2
    $characterNumber = ord($character) - 96;
    
    // Increase the position in the phrase
    $positionInToast += $characterNumber;
    //echo 'Position now ' . $positionInToast . "\n";
    
    // Output the character's numerical value
     echo $character . ' = ' . $characterNumber . "\n";
    
    // Store the character we land on
    $characters[] = str_split($phrase)[$positionInToast];
}
echo 'Result is: ' . implode('', $characters) . "\n";