Web/API/request.php

<?php 
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Pragma: no-cache");
header('Content-Type: application/json');
$servername = "localhost";
$username = "paredu";
$password = "d5X5\$cN$9G";
$dbname = "paredu";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    header('Content-Type: application/json');
    echo json_encode(array('response' => "Database connection error (".$conn->connect_error.")"));
    exit;
}

if(isset($_GET["type"])){
    $type = $_GET["type"];
}else{
    $type = null;
}

if($type == null){
    echo json_encode(array('response' => "No type specified"));
}else{
    switch($type){
        case "schools":
            $list = array();
            if ($result = $conn->query("SELECT * FROM `schools`")) {
                while($row = $result->fetch_assoc()) {
                        $list[] = $row;
                }
                echo json_encode($list);
            }
            $result->close();
            $conn->close();
            break;
        case "events":
            $list = array();
            if(isset($_GET["ownertype"]) && isset($_GET["ownerid"])){
                $result = $conn->query("SELECT * FROM `events` WHERE `ownertype` = '".$conn->real_escape_string($_GET["ownertype"])."' AND `ownerid` = '".$conn->real_escape_string($_GET["ownerid"])."' ");
            }else{
                $result = $conn->query("SELECT * FROM `events`");
            }
            if (!empty($result) && $result->num_rows > 0) {
                while($row = $result->fetch_assoc()) {
                        $list[] = $row;
                }
                echo json_encode($list);
            }else{
                echo json_encode(array('response' => "No events connected to specified owner"));
            }
            $result->close();
            $conn->close();
            break;
        case "image":
            if(isset($_GET["subtype"])){
                $subtype = $_GET["subtype"];
            }else{
                echo json_encode(array('response' => "No subtype specified"));
            }
            switch($subtype){
                case "school":
                    header('Content-Type: image/png');
                    $file = "../images/school/".$_GET["id"].".png";
                    if(file_exists($file)){
                        include $file;
                    }else{
                        include "../images/default.png";
                    }
                    break;
                case "company":
                        header('Content-Type: image/png');
                        $file = "../images/company/".$_GET["id"].".png";
                        if(file_exists($file)){
                            include $file;
                        }else{
                            include "../images/default.png";
                        }
                        break;
                case "user":
                    header('Content-Type: image/png');
                    $file = "../images/user/".$_GET["id"].".png";
                    if(file_exists($file)){
                        include $file;
                    }else{
                        include "../images/defaultuser.png";
                    }
                    break;
                case "eventcategory":
                        header('Content-Type: image/png');
                        $file = "../images/eventcategory/".$_GET["category"].".png";
                        if(file_exists($file)){
                            include $file;
                        }else{
                            include "../images/eventcategory/default.png";
                        }
                        break;
                default:
                    echo json_encode(array('response' => "Invalid subtype specified"));
                    break;
            }
            break;
        case "string":
            if(isset($_GET["subtype"])){
                $subtype = $_GET["subtype"];
            }else{
                echo json_encode(array('response' => "No subtype specified"));
            }
            //if(isset($_GET["lang"])){
            //    $lang = $_GET["lang"];
            //}else{
            //    echo json_encode(array('response' => "No language specified"));
            //}
            switch($subtype){
                case "school":
                    $list = array();
                    if ($result = $conn->query("SELECT * FROM `schooltypes`")) {
                        while($row = $result->fetch_assoc()) {
                                $list[] = $row;
                        }
                        echo json_encode($list);
                    }
                    $result->close();
                    $conn->close();
                    break;
                case "company":
                        $list = array();
                        if ($result = $conn->query("SELECT * FROM `schooltypes`")) {
                            while($row = $result->fetch_assoc()) {
                                    $list[] = $row;
                            }
                            echo json_encode($list);
                        }
                        $result->close();
                        $conn->close();
                        break;
                case "user":
                    $list = array();
                    if ($result = $conn->query("SELECT * FROM `acctypes`")) {
                        while($row = $result->fetch_assoc()) {
                                $list[] = $row;
                        }
                        echo json_encode($list);
                    }
                    $result->close();
                    $conn->close();
                    break;
                default:
                    break;
            }
            break;
        default:
            echo json_encode(array('response' => "Invalid type specified"));
            break;
    }
}
?>