PHP - Calculate Average Rating Not Working? - php

Question

I've been working on a movie review website and I can't quite get the calculate average rating functionality working. In the code below, In the first instance I am grabbing the current rating of the movie [$totalRating] via an API and setting the counter [$numRatings]. Then via an API I am collecting all of the ratings of that movie, attempting to to add them to the total rating, updating the counter within the loop.
However, when I rate movies they simply are updated to the registered rating (say I input an 8 it becomes an 8) and the division never takes place. Was wondering if anyone has any solutions or can see where I am going wrong?
function setUserRating($movieID)
{
$ep = "http://localhost:8888/MovieRating/api/?movieDetails=$movieID";
$response = file_get_contents($ep);
$Movies = json_decode($response, true);
$baseRating = $Movies[0]['movieRating'];
$numRatings = 1;
$totalRating = $baseRating;
$ep = "http://localhost:8888/MovieRating/api/?allMovieRatings=$movieID";
$resp = file_get_contents($ep);
$userRatings = json_decode($resp, true);
if (isset($userRatings['movie_ratings'])) {
$reviews = $userRatings['movie_ratings'];
}
if (isset($reviews)) {
foreach ($reviews as $row) {
$numRatings++;
$totalRating = $totalRating + $row['rating'];
}
}
$avgUserRating = $totalRating / $numRatings;
return $avgUserRating;
}

Answer 1

Might just need a small adjustment
function setUserRating($movieID)
{
$ep = "http://localhost:8888/MovieRating/api/?movieDetails=$movieID";
$response = file_get_contents($ep);
$Movies = json_decode($response, true);
$baseRating = $Movies[0]['movieRating'];
$numRatings = 0; //1
$totalRating = 0; //$baseRating;
$ep = "http://localhost:8888/MovieRating/api/?allMovieRatings=$movieID";
$resp = file_get_contents($ep);
$userRatings = json_decode($resp, true);
if (array_key_exists($userRatings['movie_ratings'])) {
$reviews = $userRatings['movie_ratings'];
}
if (isset($reviews)) {
foreach ($reviews as $row) {
++$numRatings;
$totalRating += $row['rating'];
}
}
return $numRatings > 0 ? $totalRating / $numRatings : $baseRating;
}