How can the issue of the "empty" output be troubleshooted in the provided PHP code?

The "empty" output issue in the provided PHP code can be troubleshooted by checking if the query execution was successful and if there are any results returned. If the query execution fails or no results are found, the output will be empty. To solve this, you can add error handling to check for query execution errors and verify if any rows were returned before displaying the output. 

// Check if the query execution was successful and if there are any results
if ($result === false) {
    echo "Error executing query: " . mysqli_error($conn);
} else {
    if (mysqli_num_rows($result) > 0) {
        // Output the results
        while ($row = mysqli_fetch_assoc($result)) {
            echo "Name: " . $row['name'] . "<br>";
            echo "Age: " . $row['age'] . "<br>";
        }
    } else {
        echo "No results found.";
    }
}

Keywords

PHP troubleshooting empty output debugging error handling

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