php学习，一个简单的Calendar(2) 一个简单的活动页面

有了前面的基础，后面就是将页面展示出来。

预览图如下：1号和31号分别有活动，会一并显示出来

 

这里需要搞定几个问题，一个就是数据库的连接，我们用\sys\class\class.db_connect.inc.php

<?php

/*

 * 数据库操作（数据库访问，认证等）

 */

class DB_Connect

{

    /**

     * Stores a database object

     *

     * @var object A database object

     */

    protected $db;

    /**

     * Checks for a DB object or creates one if one isn't found

     *

     * @param object $dbo A database object

     */

    protected function __construct($db = NULL)

    {

        if (is_object($db)) {

            $this->db = $db;

        } else {

            // Constants are defined in /sys/config/db-cred.inc.php

            $dsn = "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME;

            try {

                $this->db = new PDO($dsn, DB_USER, DB_PASS, array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES ' . DB_ENCODE));

            } catch (Exception $e) {

                // If the DB connection fails, output the error

                die ($e->getMessage());

            }

        }

    }

}

?>

程序中需要引入DB_USER等的定义文件：db-cred.inc.php

<?php

/*

 * Created on 2012-4-24 by xiongxuebing

 */

 /*

* Create an empty array to store constants

*/

$C = array();

/*

* The database host URL

*/

$C['DB_HOST'] = 'localhost';

/*

* The database username

*/

$C['DB_USER'] = 'root';

/*

* The database password

*/

$C['DB_PASS'] = 'root';

/*

* The name of the database to work with

*/

$C['DB_NAME'] = 'php-jquery_example';

$C['DB_ENCODE'] = 'UTF8';

?>

 

需要注意的是,类似DB_HOST的常量并没有直接定义，而是通过在/sys/core/init.inc.php中进行定义：

foreach ($C as $name => $val) {
    define($name, $val);
}

原文件如下的示：

<?php

/*

 * Created on 2016-6-19 by luhx

 */

session_start();

/*

* Generate an anti-CSRF token if one doesn't exist

*/

if (!isset($_SESSION['token'])) {

    $_SESSION['token'] = sha1(uniqid(mt_rand(), TRUE));

}

/*

* Include the necessary configuration info

*/

include_once '../sys/config/db-cred.inc.php';

/*

* Define constants for configuration info

*/

foreach ($C as $name => $val) {

    define($name, $val);

}

/*

* Create a PDO object

*/

$dsn = "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME;

$dbo = new PDO($dsn, DB_USER, DB_PASS);

/*

* Define the auto-load function for classes

*/

function __autoload($class)

{

    $filename = "../sys/class/class." . $class . ".inc.php";

    if (file_exists($filename)) {

        include_once $filename;

    }

}

?>

 

接下来需显示日历:index.php

<?php

/*

 * Created on 2012-4-24 by xiongxuebing

 */

/*

* 包含必须的文件

*/

include_once '../sys/core/init.inc.php';

/*

* 载入日历

*/

$cal = new Calendar($dbo, "2010-01-01 12:00:00");

/**

 * 初始化标题和样式文件

 */

$page_title = "Events Calendar";

$css_files = array('style.css');

include_once 'assets/common/header.inc.php';

?>

<?php

/*

* 包含尾页

*/

include_once 'assets/common/footer.inc.php';

?>

 

首先需要创建一个Calendar

/sys/class/class.calendar.inc.php

<?php

/*

 * Created on 2012-4-24 by xiongxuebing

 */

class Calendar extends DB_Connect

{

    /**

     * 日历根据此日期构建

     * YYYY-MM-DD HH:MM:SS

     * @var string

     */

    private $_useDate;

    /**

     * 日历显示月份

     * @var int

     */

    private $_m;

    /**

     * 年

     * @var int

     */

    private $_y;

    /**

     * 这个月有多少天

     * @var int

     */

    private $_daysInMonth;

    /**

     * 这个月从周几开始

     * @var int

     */

    private $_startDay;

    public function __construct($dbo = NULL, $useDate = NULL)

    {

        parent::__construct($dbo);

        /*

         * Gather and store data relevant to the month

         */

        if (isset($useDate)) {

            $this->_useDate = $useDate;

        } else {

            $this->_useDate = date('Y-m-d H:i:s');

        }

        $ts = strtotime($this->_useDate);

        $this->_m = date('m', $ts);

        $this->_y = date('Y', $ts);

        $this->_daysInMonth = cal_days_in_month(

            CAL_GREGORIAN,

            $this->_m,

            $this->_y

        );

        $ts = mktime(0, 0, 0, $this->_m, 1, $this->_y);

        $this->_startDay = date('w', $ts);

    }

    /**

     * 生成用于显示日历和活动的HTML标记

     *

     * 使用储存在类属性中的数据，截入给定月份的活动数据，生成并返回完整的日历HTML标记

     * @return string 日历HTML标记

     */

    public function buildCalendar()

    {

        /**

         * 确定日历显示月份并创建一个用于标识日历每列星期几的缩写数组

         */

        $cal_month = date('F Y', strtotime($this->_useDate));

        $cal_id = date('Y-m', strtotime($this->_useDate));

        $weekdays = array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');

        /**

         * 给日历标记添加一个标题

         */

        $html = "\n\t<h2 id=\"month-$cal_id\">$cal_month</h2>";

        for ($d = 0, $labels = NULL; $d < 7; ++$d) {

            $labels .= "\n\t\t<li>" . $weekdays[$d] . "</li>";

        }

        $html .= "\n\t<ul class=\"weekdays\">" . $labels . "\n\t</ul>";

        /*

         * Load events data

         */

        $events = $this->_createEventObj();

        /*

         * 生成日历HTML标记

         */

        $html .= "\n\t<ul>"; // 开始一个新的<ul>

        for ($i = 1, $c = 1, $t = date('j'), $m = date('m'), $y = date('Y'); $c <= $this->_daysInMonth; ++$i) {

            $event_info = NULL; // clear the variable

            //为该月的之前几天添加填充项

            $class = $i <= $this->_startDay ? "fill" : NULL;

            //如果当前处理日期是今天，则为他添加class today

            if ($c == $t && $m == $this->_m && $y == $this->_y) {

                $class = "today";

            }

            $ls = sprintf("\n\t\t<li class=\"%s\">", $class);

            $le = "\n\t\t</li>";

            if ($this->_startDay < $i && $this->_daysInMonth >= $c) {

                if (isset($events[$c])) {

                    foreach ($events[$c] as $event) {

                        $link = '<a href="view.php?event_id=' . $event->id . '">' . $event->title . '</a>';

                        $event_info = "\n\t\t\t$link";

                    }

                }

                $date = sprintf("\n\t\t\t<strong>%02d</strong>", $c++);

            } else {

                $date = " ";

            }

            //如果赶上星期六，就新起一行

            $wrap = $i != 0 && $i % 7 == 0 ? "\n\t</ul>\n\t<ul>" : NULL;

            //Assemble the pieces into a finished item

            $html .= $ls . $date . $event_info . $le . $wrap;

        }

        //Add filler to finish out the last week

        while ($i % 7 != 1) {

            $html .= "\n\t\t<li class=\"fill\">&nbsp;</li>";

            ++$i;

        }

        //Close the final unordered list

        $html .= "\n\t</ul>\n\n";

        $admin = $this->_adminGeneralOptions();

        /**

         * 返回用于输出的HTML标记

         */

        return $html . $admin;

    }

    /**

     * 得到活动信息HTML

     * @param int $id 活动ID

     * @return string 用于显示活动信息的基本HTML标记

     */

    public function displayEvent($id)

    {

        /**

         * Make sure an ID was passed

         * */

        if (empty($id)) {

            return NULL;

        }

        /**

         * Make sure the ID is an integer

         **/

        $id = preg_replace('/[^0-9]/', '', $id);

        /**

         * Load the event data from the DB

         **/

        $event = $this->_loadEventById($id);

        /**

         * Generate strings for the date, start, and end time

         * */

        $ts = strtotime($event->start);

        $date = date('F d, Y', $ts);

        $start = date('g:ia', $ts);

        $end = date('g:ia', strtotime($event->end));

        /*

         * Load admin options if the user is logged in

         */

        $admin = $this->_adminEntryOptions($id);

        return "<h2>$event->title</h2>\n\t<p class=\"dates\">$date, $start&mdash;$end</p>" .

        "\n\t<p>$event->description</p>$admin";

    }

    public function displayForm()

    {

        if (isset($_POST['event_id'])) {

            $id = (int)$_POST['event_id'];

            // Force integer type to sanitize data

        } else {

            $id = NULL;

        }

        /*

         * Instantiate the headline/submit button text

         */

        $submit = "Create new!";

        /*

         * If an ID is passed, loads the associated event

         */

        if (!empty($id)) {

            $event = $this->_loadEventById($id);

            if (!is_object($event)) {

                return NULL;

            }

            $submit = "Edit event!";

        }

        return <<<FORM_MARKUP

       <form action="assets/inc/process.inc.php" method="post">

       <fieldset>

       <legend>$submit</legend>

       <label for="event_title">Event Title</label>

       <input type="text" name="event_title" id="event_title" value="$event->title" />

       <label for="event_start">Start Time</label>

       <input type="text" name="event_start" id="event_start" value="$event->start" />

       <label for="event_end">End Time</label>

       <input type="text" name="event_end" id="event_end" value="$event->end" />

       <label for="event_description">Event Description</label>

       <textarea name="event_description" id="event_description">$event->description</textarea>

       <input type="hidden" name="event_id" value="$event->id" />

       <input type="hidden" name="token" value="$_SESSION[token]" />

       <input type="hidden" name="action" value="event_edit" />

       <input type="submit" name="event_submit" value="$submit" /> or <a href="./" class = "link">cancel</a>

       </fieldset>

       </form>

FORM_MARKUP;

    }

    public function processForm()

    {

        if ($_POST['action'] != 'event_edit') {

            return "The method processForm was accessed incorrectly";

        }

        $title = htmlentities($_POST['event_title'], ENT_QUOTES, "UTF-8");

        $desc = htmlentities($_POST['event_description'], ENT_QUOTES, "UTF-8");

        $start = htmlentities($_POST['event_start'], ENT_QUOTES, "UTF-8");

        $end = htmlentities($_POST['event_end'], ENT_QUOTES, "UTF-8");

        if (!$this->_validDate($start) || !$this->_validDate($end)) {

            return "Invalid date format! Use YYYY-MM-DD HH:MM:SS.";

        }

        /*

        * If no event ID passed, create a new event

        */

        if (empty($_POST['event_id'])) {

            $sql = "INSERT INTO `events` (`event_title`, `event_desc`, `event_start`, `event_end`)" .

                " VALUES (:title, :description, :start, :end)";

        } else {

            $id = (int)$_POST['event_id'];

            $sql = "UPDATE `events` SET `event_title`=:title,`event_desc`=:description,`event_start`=:start,`event_end`=:end WHERE `event_id`=$id";

        }

        try {

            $stmt = $this->db->prepare($sql);

            $stmt->bindParam(":title", $title, PDO::PARAM_STR);

            $stmt->bindParam(":description", $desc, PDO::PARAM_STR);

            $stmt->bindParam(":start", $start, PDO::PARAM_STR);

            $stmt->bindParam(":end", $end, PDO::PARAM_STR);

            $stmt->execute();

            $stmt->closeCursor();

            return $this->db->lastInsertId();

        } catch (Exception $e) {

            return $e->getMessage();

        }

    }

    public function confirmDelete($id)

    {

        if (empty($id)) {

            return NULL;

        }

        $id = preg_replace('/[^0-9]/', '', $id);

        /*

         * If the confirmation form was submitted and the form.

         * has a valid token, check the form submission

         */

        if (isset($_POST['confirm_delete']) && $_POST['token'] == $_SESSION['token']) {

            /*

             * If the deletion is confirmed,

             * remove the event from the database

             */

            if ($_POST['confirm_delete'] == "删除") {

                $sql = "DELETE FROM `events` WHERE `event_id`=:id LIMIT 1";

                try {

                    $stmt = $this->db->prepare($sql);

                    $stmt->bindParam(":id", $id, PDO::PARAM_INT);

                    $stmt->execute();

                    $stmt->closeCursor();

                    header("Location: ./");

                    return;

                } catch (Exception $e) {

                    return $e->getMessage();

                }

            } /*

         * If not confirmed,

         * sends the user to the main view

         */

            else {

                header("Location: ./");

                return;

            }

        }

        /*

         * If the confirmation form hasn't been submitted, display it

         * */

        $event = $this->_loadEventById($id);

        /*

         * If no object is returned, return to the main view

         * */

        if (!is_object($event)) {

            header("Location: ./");

        }

        return <<<CONFIRM_DELETE

    <form action="confirmdelete.php" method="post">

       <h2>确定要删除 "$event->title" 吗?</h2>

          <p>删除后将<strong>不能恢复</strong>！</p>

          <p>

             <input type="submit" name="confirm_delete" value="删除" />

             <input type="submit" name="confirm_delete" value="取消" />

             <input type="hidden" name="event_id" value="$event->id" />

             <input type="hidden" name="token" value="$_SESSION[token]" />

          </p>

    </form>

CONFIRM_DELETE;

    }

    private function _validDate($date)

    {

        $pattern = '/^(\d{4}(-\d{2}){2} (\d{2})(:\d{2}){2})$/';

        /*

        * If a match is found, return TRUE. FALSE otherwise.

        */

        return preg_match($pattern, $date) == 1 ? TRUE : FALSE;

    }

    private function _loadEventData($id = NULL)

    {

        $sql = "SELECT `event_id`, `event_title`, `event_desc`,`event_start`, `event_end` FROM `events`";

        if (!empty($id)) {

            $sql .= "WHERE `event_id`=:id LIMIT 1";

        } else {

            $start_ts = mktime(0, 0, 0, $this->_m, 1, $this->_y);

            $end_ts = mktime(23, 59, 59, $this->_m + 1, 0, $this->_y);

            $start_date = date('Y-m-d H:i:s', $start_ts);

            $end_date = date('Y-m-d H:i:s', $end_ts);

            $sql .= "WHERE `event_start` BETWEEN '$start_date' AND '$end_date' ORDER BY `event_start`";

        }

        try {

            $stmt = $this->db->prepare($sql);

            /*

             * Bind the parameter if an ID was passed

             */

            if (!empty($id)) {

                $stmt->bindParam(":id", $id, PDO::PARAM_INT);

            }

            $stmt->execute();

            $results = $stmt->fetchAll(PDO::FETCH_ASSOC);

            $stmt->closeCursor();

            return $results;

        } catch (Exception $e) {

            die ($e->getMessage());

        }

    }

    /**

     * 载入该月全部活动信息到一个数组

     * @return array 活动信息

     */

    private function _createEventObj()

    {

        /*

         * Load the events array

         */

        $arr = $this->_loadEventData();

        /**

         * Create a new array, then organize the events* by the day of the monthon which they occur

         * */

        $events = array();

        foreach ($arr as $event) {

            $day = date('j', strtotime($event['event_start']));

            try {

                $events[$day][] = new Event($event);

            } catch (Exception $e) {

                die ($e->getMessage());

            }

        }

        return $events;

    }

    private function _loadEventById($id)

    {

        /**

         * 如果id为空，返回NULL

         */

        if (empty($id)) {

            return NULL;

        }

        /**

         * 载入活动信息数组

         */

        $event = $this->_loadEventData($id);

        /**

         * 返回event对象

         */

        if (isset($event[0])) {

            return new Event($event[0]);

        } else {

            return NULL;

        }

    }

    private function _adminGeneralOptions()

    {

        if (isset($_SESSION['user'])) {

            return <<<ADMIN_OPTIONS

               <a href="admin.php" class="admin">+ 新&nbsp;建&nbsp;活&nbsp;动</a>

               <form action="assets/inc/process.inc.php" method="post">

                  <div>

                  <input type="submit" value="登&nbsp;&nbsp;出" class="link" />

                  <input type="hidden" name="token" value="$_SESSION[token]" />

                  <input type="hidden" name="action" value="user_logout" />

                  </div>

               </form>

ADMIN_OPTIONS;

        } else {

            return <<<ADMIN_OPTIONS

         <a href="login.php" class="link">登&nbsp;&nbsp;录</a>

ADMIN_OPTIONS;

        }

    }

    private function _adminEntryOptions($id)

    {

        if (isset($_SESSION['user'])) {

            return <<<ADMIN_OPTIONS

        <div class="admin-options">

        <form action="admin.php" method="post">

           <p>

              <input type="submit" name="edit_event" value="编&nbsp;&nbsp;辑" />

              <input type="hidden" name="event_id" value="$id" />

           </p>

        </form>

        <form action="confirmdelete.php" method="post">

           <p>

              <input type="submit" name="delete_event" value="删&nbsp;&nbsp;除" />

              <input type="hidden" name="event_id" value="$id" />

           </p>

        </form>

        </div>

        <!-- end .admin-options -->

ADMIN_OPTIONS;

        } else {

            return NULL;

        }

    }

}

?>

 

然后在目录/public/assets/common/中 加入页头文件header.inc.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>

    <meta htp-equiv="Content-Type" content="text/html;charset=utf-8" />

    <title><?php echo $page_title; ?></title>

    <?php foreach ($css_files as $css): ?>

        <link rel="stylesheet" type="text/css" media="screen,projection"

              href="assets/css/<?php echo $css; ?>" />

    <?php endforeach; ?>

</head>

<body>

页尾文件footer.inc.php

</body>

</html>

 

加入css文件：public/assets/css/style.css

body{

    background-color:#789;

    font-famly:georgia,serif;

    font-size:13px;

}

#content {

    display:block;

    width:812px;

    margin:40px auto 10px;

    padding:10px;

    background-color:#FFF;

    -moz-border-radius:6px;

    -webkit-border-radius:6px;

    border-radius:6px;

    border:2px solid black;

    -moz-box-shadow:0 0 14px #123;

    -webkit-box-shadow:0 0 14px #123;

    box-shadow:0 0 14px #123;

}

h2,p{

    margin:0 auto 14px;

    text-align:center;

}

ul{

    display:block;

    clear:left;

    height:82px;

    width:812px;

    margin:0 auto;

    padding: 0;

    list-style:none;

    background-color:#FFF;

    text-align:center;

    border:1px solid black;

    border-top: 0;

    border-bottom: 2px solid black;

}

li {

    position:relative;

    float:left;

    margin:0;

    padding:20px 2px 2px;

    border-left:1px solid black;

    border-right:1px solid black;

    width: 110px;

    height: 60px;

    overflow:hidden;

    background-color:white;

}

li:hover{

    background-color:#FCB;

    z-index:1;

    -moz-box-shadow: 0 0 10px #789;

    -webkit-box-shadow: 0 0 10px #789;

    box-shadow:0 0 10px #789;

}

.weekdays{

    height: 20px;

    border-top: 2px solid black;

}

.weekdays li{

    height: 16px;

    padding: 2px 2px;

    background-color: #BCF;

}

.fill{

    background-color:#BCD;

}

.weekdays li:hover,li.fill:hover{

    background-color:#BCD;

    -moz-box-shadow: none;

    -webkit-box-shadow: none;

    box-shadow: none;

}

.weekdays li:hover,.today{

    background-color: #BCF;

}

li strong {

    position:absolute;

    top: 2px;

    right:2px;

}

li a {

    position: relative;

    display:block;

    border: 1px dotted black;

    margin:2px;

    padding:2px;

    font-size:11px;

    background-color:#BEF;

    text-align:left;

    -moz-border-radius: 6px;

    -webkit-border-radius:6px;

    border-radius:6px;

    z-index:1;

    text-decoration:none;

    color:black;

    font-weight:bold;

    font-style:italic;

}

li a:hover {

    background-color:#BCF;

    z-index:2;

    -moz-box-shadow: 0 0 6px #789;

    -webkit-box-shadow: 0 0 6px #789;

    box-shadow: 0 0 6px #789;

}

本篇文章对应代码：http://download.csdn.net/detail/luhouxiang/9554054