Online PHP editor | refs for Qh8pD

@ 2018-12-15T23:10:53Z

<?php
$a = [];
$x = 63;
for ($x = 0; $x < 10000; $x++) {
//    $a[] = substr($x, 0, 1);
//    $a[] = substr($x, 1, 1);
    
    $x_arr = str_split($x);
    $a[] = $x_arr[0];
    $a[] = $x_arr[1];
}

echo count($a);