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php学习,一个简单的Calendar(2) 一个简单的活动页面

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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

技术分享

 

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 = "&nbsp;";
            }
            //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;
}
 

php学习,一个简单的Calendar(2) 一个简单的活动页面

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原文地址:http://www.cnblogs.com/luhouxiang/p/5598978.html

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