ethics-canvas/php/db_utils.php

<?php
    // Connect to the MySQL database
    function db_connect() {
        $database = mysqli_connect("localhost", "mysqluser", "mysqlpassword", "ethicscanvas");
        
        if(!$database) {
            throw new Exception(mysqli_connect_errno() . ": " . mysqli_connect_error());
        }
        
        return $database;
        
        /*
        include('config.php');
        if(isset($db_host, $db_username, $db_password, $db_name)) {
            // Create connection to database
            $conn = new mysqli($db_host, $db_username, $db_password, $db_name);
            if ($conn->connect_error) {
                echo 4004; // Unsuccessful connection to database
            }
        }
        else { // Connection variables not set
            echo 4005; // Respond with bad request code
        }
        
        return $conn;
         */
    }
    
    // Closes the connection to the database
    function db_close($conn) {
        $conn->close();
    }
    
    // Run query with a return
    function db_query_return($inDatabase, $inQuery) {
        if(!$recordSet = mysqli_query($inDatabase, $inQuery)) {
            throw new Exception(mysqli_errno($inDatabase) . ": " . mysqli_error($inDatabase));
        }
        
        return $recordSet;
    }
    
    // Run query without any return
    function db_query_no_return($inDatabase, $inQuery) {
        if(!mysqli_query($inDatabase, $inQuery)) {
            throw new Exception(mysqli_errno($inDatabase) . ": " . mysqli_error($inDatabase));
        }
    }
?>