Guess number

<?php

$secretNum = rand(1, 100); // 90.

$minNum = 1;
$maxNum = 100;

$divider = floor($maxNum / 2); // 100 / 2 = 50 
$guessNum = $divider; // 50.


$isNumberFound = false;
$stages = 1;

while (!$isNumberFound) {
	$divider = (floor($divider / 2)) > 1 ? floor($divider / 2) : ceil($divider / 2); 
	//$divider = floor($divider / 2); // 1 / 2 = 0.
	if ($guessNum == $secretNum) {  // 46 === 46.
		echo "Your number is  {$guessNum}. The secret is {$secretNum}. Stages in sum: {$stages}.";
		$isNumberFound = true;
	} else if ($guessNum > $secretNum) {
		echo "Search lower. Your number is {$guessNum}. The secret is {$secretNum}.";
		echo "<br>";
		$guessNum -= $divider; // guessNum = 50 - 25 = 25.
	} else {
		echo "Search higher. Your number is {$guessNum}. The secret is {$secretNum}.";
		echo "<br>";
		$guessNum += $divider; // guessNum = 43 + 3 = 46.
	}

	$stages++;
}

?>