一个简单的calendar源代码

<?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'];