What are some common challenges faced when trying to output grouped results in PHP based on a MySQL query?

When trying to output grouped results in PHP based on a MySQL query, a common challenge is properly handling the grouped data structure returned by the query. One way to solve this is to iterate through the grouped results and display them accordingly in your PHP code. 

// Execute MySQL query to get grouped results
$query = "SELECT category, COUNT(*) as count FROM products GROUP BY category";
$result = mysqli_query($connection, $query);

// Iterate through grouped results and display them
while($row = mysqli_fetch_assoc($result)) {
    echo "Category: " . $row['category'] . " - Count: " . $row['count'] . "<br>";
}

Keywords

MySQL query PHP grouping results data manipulation data presentation

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