<?php class Calendar { private $year; private $month; private $weeks = array('日','一','二','三','四','五','六'); function __construct($options = array()) { $this->year = date('Y'); $this->month = date('m'); $vars = get_class_vars(get_class($this)); foreach ($options as $key=>$value) { if (array_key_exists($key, $vars)) { $this->$key = $value; } } } function display() { echo '<table class="calendar">'; $this->showChangeDate(); $this->showWeeks(); $this->showDays($this->year,$this->month); echo '</table>'; } private function showWeeks() { echo '<tr>'; foreach($this->weeks as $title) { echo '<th>'.$title.'</th>'; } echo '</tr>'; } private function showDays($year, $month) { $firstDay = mktime(0, 0, 0, $month, 1, $year); $starDay = date('w', $firstDay); $days = date('t', $firstDay); echo '<tr>'; for ($i=0; $i<$starDay; $i++) { echo '<td> </td>'; } for ($j=1; $j<=$days; $j++) { $i++; if ($j == date('d')) { echo '<td class="today">'.$j.'</td>'; } else { echo '<td>'.$j.'</td>'; } if ($i % 7 == 0) { echo '</tr><tr>'; } } echo '</tr>'; } private function showChangeDate() { $url = basename($_SERVER['PHP_SELF']); echo '<tr>'; echo '<td><a href="?'.$this->preYearUrl($this->year,$this->month).'">'.'<<'.'</a></td>'; echo '<td><a href="?'.$this->preMonthUrl($this->year,$this->month).'">'.'<'.'</a></td>'; echo '<td colspan="3"><form>'; echo '<select name="year" onchange="window.location=''.$url.'?year='+this.options[selectedIndex].value+'&month='.$this->month.''">'; for($ye=1970; $ye<=2038; $ye++) { $selected = ($ye == $this->year) ? 'selected' : ''; echo '<option '.$selected.' value="'.$ye.'">'.$ye.'</option>'; } echo '</select>'; echo '<select name="month" onchange="window.location=''.$url.'?year='.$this->year.'&month='+this.options[selectedIndex].value+''">'; for($mo=1; $mo<=12; $mo++) { $selected = ($mo == $this->month) ? 'selected' : ''; echo '<option '.$selected.' value="'.$mo.'">'.$mo.'</option>'; } echo '</select>'; echo '</form></td>'; echo '<td><a href="?'.$this->nextMonthUrl($this->year,$this->month).'">'.'>'.'</a></td>'; echo '<td><a href="?'.$this->nextYearUrl($this->year,$this->month).'">'.'>>'.'</a></td>'; echo '</tr>'; } private function preYearUrl($year,$month) { $year = ($this->year <= 1970) ? 1970 : $year - 1 ; return 'year='.$year.'&month='.$month; } private function nextYearUrl($year,$month) { $year = ($year >= 2038)? 2038 : $year + 1; return 'year='.$year.'&month='.$month; } private function preMonthUrl($year,$month) { if ($month == 1) { $month = 12; $year = ($year <= 1970) ? 1970 : $year - 1 ; } else { $month--; } return 'year='.$year.'&month='.$month; } private function nextMonthUrl($year,$month) { if ($month == 12) { $month = 1; $year = ($year >= 2038) ? 2038 : $year + 1; }else{ $month++; } return 'year='.$year.'&month='.$month; } } |