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[dev] add initial commit
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‎README.md‎

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# dhtmlxScheduler with plain PHP Backend
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Implementing scheduler backend in plain PHP without extra libraries and frameworks.
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## Requirements
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- Web server that supports php (apache, nginx, php-fpm, build-in php server, etc)
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- MySql
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- PHP 5.4+ with **php_pdo** extension installed
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How to install **php_pdo**: https://www.php.net/manual/en/pdo.installation.php
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## Setup
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- clone or download the repository into the root folder of your web server (e.g. `htdocs` for Apache)
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```
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$ git clone git@github.com:DHTMLX/scheduler-howto-php-plain.git
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$ cd ./scheduler-howto-php-plain
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```
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- import database from **mysql_dump.sql**
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- update db connection settings in data/config.php
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- open `http://localhost/scheduler-howto-php-plain`
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## Links
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- Tutorial: coming soon

‎basic.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>How to start - connector - basic</title>
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<script src="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler.js" type="text/javascript"></script>
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<link rel="stylesheet" href="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler_material.css" type="text/css">
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<style type="text/css">
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html, body{
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margin:0px;
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padding:0px;
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height:100%;
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overflow:hidden;
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}
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</style>
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</head>
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<body>
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<div id="scheduler_here" class="dhx_cal_container" style="width:100%; height:100%;">
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<div class="dhx_cal_navline">
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<div class="dhx_cal_prev_button">&nbsp;</div>
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<div class="dhx_cal_next_button">&nbsp;</div>
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<div class="dhx_cal_today_button"></div>
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<div class="dhx_cal_date"></div>
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<div class="dhx_cal_tab" name="day_tab"></div>
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<div class="dhx_cal_tab" name="week_tab"></div>
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<div class="dhx_cal_tab" name="month_tab"></div>
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</div>
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<div class="dhx_cal_header"></div>
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<div class="dhx_cal_data"></div>
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</div>
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<script>
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scheduler.setLoadMode("day");
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scheduler.init("scheduler_here", new Date(),"month");
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scheduler.load("data/api.php");
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var dp = new dataProcessor("data/api.php");
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dp.init(scheduler);
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dp.setTransactionMode("JSON"); // use to transfer data with JSON
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</script>
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</body>
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</html>

‎data/api.php‎

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<?php
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require_once("config.php");
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function read($db, $requestParams){
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$queryParams = [];
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$queryText = "SELECT * FROM `events`";
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if (isset($requestParams["from"]) && isset($requestParams["to"])) {
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$queryText .= " WHERE `end_date`>=? AND `start_date` < ?;";
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$queryParams = [$requestParams["from"], $requestParams["to"]];
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}
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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$events = $query->fetchAll();
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foreach($events as $index=>$event){
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$events[$index]["text"] = htmlentities($event["text"]);
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}
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return $events;
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}
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function create($db, $event){
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$queryText = "INSERT INTO `events` SET
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`start_date`=?,
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`end_date`=?,
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`text`=?";
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$queryParams = [
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$event["start_date"],
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$event["end_date"],
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$event["text"]
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];
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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return $db->lastInsertId();
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}
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function update($db, $event, $id){
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$queryText = "UPDATE `events` SET
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`start_date`=?,
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`end_date`=?,
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`text`=?
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WHERE `id`=?";
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$queryParams = [
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$event["start_date"],
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$event["end_date"],
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$event["text"],
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$id
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];
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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}
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function delete($db, $id){
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$queryText = "DELETE FROM `events` WHERE `id`=? ;";
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$query = $db->prepare($queryText);
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$query->execute([$id]);
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}
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try {
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$db = new PDO($dsn, $username, $password, $options);
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switch ($_SERVER["REQUEST_METHOD"]) {
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case "GET":
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$result = read($db, $_GET);
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break;
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case "POST":
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$requestPayload = json_decode(file_get_contents("php://input"));
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$id = $requestPayload->id;
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$action = $requestPayload->action;
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$body = (array) $requestPayload->data;
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$result = [
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"action" => $action
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];
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if ($action == "inserted") {;
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$databaseId = create($db, $body);
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$result["tid"] = $databaseId;
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} elseif($action == "updated") {
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update($db, $body, $id);
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} elseif($action == "deleted") {
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delete($db, $id);
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}
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break;
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default: throw new Exception("Unexpected Method"); break;
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}
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} catch (Exception $e) {
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http_response_code(500);
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$result = [
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"action" => "error",
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"message" => $e->getMessage()
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];
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}
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header("Access-Control-Allow-Origin: *");
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header("Access-Control-Allow-Methods: *");
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header("Content-Type: application/json");
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echo json_encode($result);

‎data/api_recurring.php‎

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<?php
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require_once("config.php");
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function read($db, $requestParams){
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$queryParams = [];
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$queryText = "SELECT * FROM `recurring_events`";
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if (isset($requestParams["from"]) && isset($requestParams["to"])) {
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$queryText .= " WHERE `end_date`>=? AND `start_date` < ?;";
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$queryParams = [$requestParams["from"], $requestParams["to"]];
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}
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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$events = $query->fetchAll(PDO::FETCH_ASSOC);
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foreach($events as $index=>$event){
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$events[$index]["text"] = htmlentities($event["text"]);
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}
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return $events;
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}
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function create($db, $event){
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$queryText = "INSERT INTO `recurring_events` SET
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`start_date`=?,
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`end_date`=?,
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`text`=?,
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`event_pid`=?,
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`event_length`=?,
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`rec_type`=?";
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$queryParams = [
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$event["start_date"],
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$event["end_date"],
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$event["text"],
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// recurring events columns
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$event["event_pid"] ? $event["event_pid"] : 0,
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$event["event_length"] ? $event["event_length"] : 0,
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$event["rec_type"]
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];
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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return $db->lastInsertId();
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}
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function update($db, $event, $id){
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$queryText = "UPDATE `recurring_events` SET
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`start_date`=?,
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`end_date`=?,
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`text`=?,
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`event_pid`=?,
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`event_length`=?,
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`rec_type`=?
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WHERE `id`=?";
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$queryParams = [
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$event["start_date"],
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$event["end_date"],
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$event["text"],
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$event["event_pid"] ? $event["event_pid"] : 0,
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$event["event_length"] ? $event["event_length"] : 0,
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$event["rec_type"],//!
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$id
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];
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if ($event["rec_type"] && $event["rec_type"] != "none") {
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//all modified occurrences must be deleted when you update recurring series
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//https://docs.dhtmlx.com/scheduler/server_integration.html#savingrecurringevents
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$subQueryText = "DELETE FROM `recurring_events` WHERE `event_pid`=? ;";
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$subQuery = $db->prepare($subQueryText);
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$subQuery->execute([$id]);
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}
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$query = $db->prepare($queryText);
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$query->execute($queryParams);
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}
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function delete($db, $id){
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// some logic specific to recurring events support
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// https://docs.dhtmlx.com/scheduler/server_integration.html#savingrecurringevents
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$subQueryText = "SELECT * FROM `recurring_events` WHERE id=? LIMIT 1;";
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$subQuery = $db->prepare($subQueryText);
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$subQuery->execute([$id]);
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$event = $subQuery->fetch();
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if ($event["event_pid"]) {
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// deleting a modified occurrence from a recurring series
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// If an event with the event_pid value was deleted - it needs updating
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// with rec_type==none instead of deleting.
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$subQueryText="UPDATE `recurring_events` SET `rec_type`='none' WHERE `id`=?;";
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$subQuery = $db->prepare($subQueryText);
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$subQuery->execute([$id]);
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}else{
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if ($event["rec_type"] && $event["rec_type"] != "none") {//!
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// if a recurring series deleted, delete all modified occurrences of the series
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$subQueryText = "DELETE FROM `recurring_events` WHERE `event_pid`=? ;";
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$subQuery = $db->prepare($subQueryText);
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$subQuery->execute([$id]);
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}
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/*
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end of recurring events data processing
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*/
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$queryText = "DELETE FROM `recurring_events` WHERE `id`=? ;";
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$query = $db->prepare($queryText);
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$query->execute([$id]);
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}
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}
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try {
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$db = new PDO($dsn, $username, $password, $options);
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switch ($_SERVER["REQUEST_METHOD"]) {
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case "GET":
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$result = read($db, $_GET);
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break;
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case "POST":
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$requestPayload = json_decode(file_get_contents("php://input"));
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$id = $requestPayload->id;
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$action = $requestPayload->action;
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$body = (array) $requestPayload->data;
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$result = [
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"action" => $action
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];
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if ($action == "inserted") {
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$databaseId = create($db, $body);
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$result["tid"] = $databaseId;
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// delete a single occurrence from recurring series
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if ($body["rec_type"] === "none") {
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$result["action"] = "deleted";//!
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}
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} elseif($action == "updated") {
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update($db, $body, $id);
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} elseif($action == "deleted") {
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delete($db, $id);
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}
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break;
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default: throw new Exception("Unexpected Method"); break;
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}
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} catch (Exception $e) {
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http_response_code(500);
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$result = [
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"action" => "error",
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"message" => $e->getMessage()
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];
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}
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header("Access-Control-Allow-Origin: *");
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header("Access-Control-Allow-Methods: *");
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header("Content-Type: application/json");
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echo json_encode($result);

‎data/config.php‎

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<?php
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$dsn = "mysql:host=localhost;dbname=scheduler_howto_php";
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$username = "root";
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$password = "";
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$options = array(
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PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'",
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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);

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