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

[code]<?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());

}

}

}

}

?>

[/code]

程序中需要引入DB_USER等的定义文件：db-cred.inc.php

[code]<?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';

?>

[/code]

 

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：

[code]<?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;

}

}

?>

[/code]

 

接下来需显示日历:index.php

[code]<?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';

?>

[/code]

 

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\"> </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, $start—$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 建 活 动</a>

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

<div>

<input type="submit" value="登  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  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  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  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

[code]</body>

</html>

[/code]

 

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