PHP if else statement not executing code when value is true - php

Question

This is for a quiz application.
This is my comparison where $number is the question number and will increase every time the user submits an answer and we will assume $totalquestions = 3 for now as the category has only 3 questions.
I've echoed both values to make sure they are what I expect them to be and done var_dump($number == $totalQuestions); which returns true when $number = 3 but does not execute my code to redirect to the finish page once all questions are done and I have no clue why.
Any help would be great as I've been staring at this problem for hours!
<?php include('server.php'); ?>
<?php
if(!isset($_SESSION['geoScore'])){
$_SESSION['geoScore'] = 0;
}
//Get quiz category
$activeCategoryID = (int) $_GET['c'];
$query = "SELECT * FROM `category` WHERE CategoryID = $activeCategoryID";
$result = mysqli_query($db, $query);
$categoryName = mysqli_fetch_assoc($result);
echo $categoryName['CategoryName'];
//Get question number
$number = (int) $_GET['n'];
$query = "SELECT * FROM `questions` WHERE QuestionID = $number AND CategoryID = $activeCategoryID";
$result = mysqli_query($db, $query);
$question = mysqli_fetch_assoc($result);
//Get choices for question
$query = "SELECT * FROM `answers` WHERE QuestionID = $number";
$choices = mysqli_query($db, $query);
//Get total questions for category
$query = "SELECT * FROM `questions` WHERE CategoryID = $activeCategoryID";
$result = mysqli_query($db, $query);
$totalQuestions = mysqli_num_rows($result);
echo $totalQuestions;
echo $number;
var_dump($number == $totalQuestions); // returns true because values are equal
$result = mysqli_query($db, $query);
$row = mysqli_fetch_assoc($result);
$correctChoice = $row['AnswerID'];
echo $correctChoice;
if($_SERVER["REQUEST_METHOD"] == "POST"){
$number = $_POST['number'];
$selectedChoice = $_POST['choice'];
$next = $number+1;
$activeCategory = $_POST['activeCategoryID'];
$query = "SELECT * FROM `questions` WHERE CategoryID = activeCategoryID";
$result = mysqli_query($db, $query);
$totalQuestions = mysqli_num_rows($result);
//Get correct choice
$query = "SELECT * FROM `answers` WHERE QuestionID = $number AND Correct = 1";
$result = mysqli_query($db, $query);
$row = mysqli_fetch_assoc($result);
$correctChoice = $row['AnswerID'];
if($correctChoice == $selectedChoice){
$_SESSION['geoScore']++;
}
//Check to see if questions have finished
if($number == $totalQuestions){
header("Location: finish.php");
}else{
header("Location: geoQuiz.php?n=".$next."&c=".$activeCategory);
}
}
?>
EDIT: Previous working version that did not dynamically get the quiz category
<?php
if(!isset($_SESSION['geoScore'])){
$_SESSION['geoScore'] = 0;
}
//Get question number
$number = (int) $_GET['n'];
$query = "SELECT * FROM `questions` WHERE QuestionID = $number AND CategoryID = 1";
$result = mysqli_query($db, $query);
$question = mysqli_fetch_assoc($result);
//Get choices for question
$query = "SELECT * FROM `answers` WHERE QuestionID = $number";
$choices = mysqli_query($db, $query);
//Get total questions for category
$query = "SELECT * FROM `questions` WHERE CategoryID = 1";
$result = mysqli_query($db, $query);
$totalQuestions = mysqli_num_rows($result);
if($_SERVER["REQUEST_METHOD"] == "POST"){
$number = $_POST['number'];
$selectedChoice = $_POST['choice'];
$next = $number+1;
$_SESSION['activeCategory'] = "Geography";
$query = "SELECT * FROM `questions` WHERE CategoryID = 1";
$result = mysqli_query($db, $query);
$totalQuestions = mysqli_num_rows($result);
//Get correct choice
$query = "SELECT * FROM `answers` WHERE QuestionID = $number AND Correct = 1";
$result = mysqli_query($db, $query);
$row = mysqli_fetch_assoc($result);
$correctChoice = $row['AnswerID'];
echo $correctChoice;
echo $selectedChoice;
if($correctChoice == $selectedChoice){
$_SESSION['geoScore']++;
}
echo $geoScore;
//Check to see if questions have finished
if($number == $totalQuestions){
header("Location: finish.php");
}else{
header("Location: geoQuiz.php?n=".$next);
}
}
?>
The above code was my previous version which worked but I would needed to have had multiple php pages for each quiz category so I tried to change this to take the category using $_GET[] in the link from index page and it seems to all work apart from when the questions are finished and to head to finish.php