mathcode

<?php

$results = [];

function generator($number, $length)
{
    // check if odd
	if($number % 2 != 0){
		$number = $number+1;
	}
	
	$result = $number/2;
	
    // if the number given is lower than 10
	if ($result < 10) {
		$result = "0$result";
	}
	
	return substr($result, -$length);
}

$count = 52327;
while(count($results) < 100) {
	$generator = generator($count, 2);
	$results[$generator] = $generator;
	$count++;
}

echo "<pre>";
print_r($results);