Alphabet Excel.php

<?php
/**
 * Defri indra mahardika
 * 08-03-2021
 * Alphabet Excel
 */
$alphabet = "C";
$suffix = "";
$number = 5;
$looping = 100;

for($i = 0; $i < $looping; $i++){
    $alphabet = chr(ord($alphabet) + 1);
    if($alphabet == "[") {
        if($suffix == "") $suffix = "A";
        else $suffix = chr(ord($suffix) + 1);
        $alphabet = "A";
    }
    
    echo "{$suffix}{$alphabet}\n";
}