Because loops are fun.

TriAlphAngle

<?php
function trialphangle(){
    $characters = "abcdefghiklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890+_)(*&^%$#@!~=-`|}{\":?><\][';/.,";
    $len = 2;

    for($i = 0; $i < $len; $i++){
        for($j = 0; $j < strlen($characters); $j++){
            print substr($characters, $j, $j+2)."\n";
        }                                                                       
    }                                                                           
}                                                                               

trialphangle();

?>