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10 jpm 1 
<?php
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/**
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* Description: same as 3.php, but using the PEAR::Date engine
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* Note: make sure PEAR::Date is a stable release!!!
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*/
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function getmicrotime(){
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    list($usec, $sec) = explode(" ",microtime());
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    return ((float)$usec + (float)$sec);
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}
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$start = getmicrotime();
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// Switch to PEAR::Date engine
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define('CALENDAR_ENGINE', 'PearDate');
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if (!@include 'Calendar'.DIRECTORY_SEPARATOR.'Calendar.php') {
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    define('CALENDAR_ROOT','../../');
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}
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require_once CALENDAR_ROOT.'Month/Weekdays.php';
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require_once CALENDAR_ROOT.'Day.php';
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// Initialize GET variables if not set
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if (!isset($_GET['y'])) $_GET['y'] = date('Y');
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if (!isset($_GET['m'])) $_GET['m'] = date('m');
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if (!isset($_GET['d'])) $_GET['d'] = date('d');
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// Build the month
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$month = new Calendar_Month_Weekdays($_GET['y'], $_GET['m']);
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// Create an array of days which are "selected"
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// Used for Week::build() below
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$selectedDays = array (
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    new Calendar_Day($_GET['y'], $_GET['m'], $_GET['d']),
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    new Calendar_Day($_GET['y'], 12, 25),
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    );
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// Build the days in the month
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$month->build($selectedDays);
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// Construct strings for next/previous links
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$PMonth = $month->prevMonth('object'); // Get previous month as object
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$prev = $_SERVER['PHP_SELF'].'?y='.$PMonth->thisYear().'&m='.$PMonth->thisMonth().'&d='.$PMonth->thisDay();
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$NMonth = $month->nextMonth('object');
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$next = $_SERVER['PHP_SELF'].'?y='.$NMonth->thisYear().'&m='.$NMonth->thisMonth().'&d='.$NMonth->thisDay();
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$thisDate = new Date($month->thisMonth('timestamp'));
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?>
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<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title> Calendar using PEAR::Date Engine </title>
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<style text="text/css">
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table {
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    background-color: silver;
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}
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caption {
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    font-family: verdana;
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    font-size: 12px;
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    background-color: while;
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}
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.prevMonth {
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    font-size: 10px;
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    text-align: left;
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}
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.nextMonth {
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    font-size: 10px;
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    text-align: right;
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}
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th {
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    font-family: verdana;
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    font-size: 11px;
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    color: navy;
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    text-align: right;
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}
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td {
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    font-family: verdana;
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    font-size: 11px;
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    text-align: right;
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}
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.selected {
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    background-color: yellow;
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}
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</style>
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</head>
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<body>
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<h2>Calendar using PEAR::Date Engine</h2>
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<table class="calendar">
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<caption>
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<?php echo $thisDate->format('%B %Y'); ?>
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</caption>
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<tr>
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<th>M</th>
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<th>T</th>
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<th>W</th>
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<th>T</th>
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<th>F</th>
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<th>S</th>
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<th>S</th>
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</tr>
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<?php
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while ($day = $month->fetch()) {
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    // Build a link string for each day
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    $link = $_SERVER['PHP_SELF'].
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                '?y='.$day->thisYear().
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                '&m='.$day->thisMonth().
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                '&d='.$day->thisDay();
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    // isFirst() to find start of week
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    if ($day->isFirst())
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        echo "<tr>\n";
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    if ($day->isSelected()) {
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       echo '<td class="selected">'.$day->thisDay().'</td>'."\n";
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    } else if ($day->isEmpty()) {
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        echo '<td>&nbsp;</td>'."\n";
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    } else {
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        echo '<td><a href="'.$link.'">'.$day->thisDay().'</a></td>'."\n";
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    }
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    // isLast() to find end of week
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    if ($day->isLast()) {
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        echo "</tr>\n";
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    }
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}
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?>
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<tr>
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<td>
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<a href="<?php echo $prev; ?>" class="prevMonth"><< </a>
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</td>
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<td colspan="5">&nbsp;</td>
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<td>
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<a href="<?php echo $next; ?>" class="nextMonth"> >></a>
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</td>
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</tr>
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</table>
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<?php
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echo '<p><b>Took: '.(getmicrotime()-$start).' seconds</b></p>';
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?>
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</body>
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</html>