「phpの学習」phpで簡単なカレンダーを作成する方法
1.ファイル名
calendar.class.php
サンプルコード：
<?php
class Calendar
{
private $year;
private $month;
private $weeks = array('日曜日’,’月曜日’,’火曜日’,’水曜日’,’木曜日’,’金曜日’,’土曜日’);
function __construct($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;
}
}
2.ファイル名：demo.php
サンプルコード：
<?php
$params = array();
if (isset($_GET['year’]) && isset($_GET['month’])) {
$params = array(
'year’ => $_GET['year’],
'month’ => $_GET['month’],
);
}
$params['url’] = 'demo.php’;
require_once 'calendar.class.php’;
?>
<html>
<head>
<title>カレンダーデモ</title>
<meta http-equiv="Content-Type" content="text/html" charset="UTF-8″ />
<style type="text/css">
table.calendar {
border: 1px solid #050;
}
.calendar th, .calendar td {
width:30px;
text-align:center;
}
.calendar th {
background-color:#050;
color:#fff;
}
.today{
color:#fff;
background-color:#050;
}
</style>
</head>
<body>
<div style="align:center">
<?php
$cal = new Calendar($params);
$cal->display();
?>
</div>
</body>
</html>