一个简单的答案，对于缺乏实现感到抱歉，但是假设您使用的是5.3，并且日期按时间顺序排列，则可以将每个日期转换为一个DateTime对象（如果尚未转换），然后使用DateTime::diff()生成该对象的数组进行迭代一个DateInterval可以用来将迭代中的当前日期与上一个日期进行比较的对象。您可以将连续的日期分组到子数组中，并使用shift()和pop()获取该子数组中的第一天和最后几天。

编辑

我对此有所考虑。接下来的工作很粗略，很容易实现，但是应该可以：

// assuming a chronologically
// ordered array of DateTime objects

$dates = array(
    new DateTime('2010-12-30'), 
    new DateTime('2011-01-01'), 
    new DateTime('2011-01-02'), 
    new DateTime('2011-01-03'), 
    new DateTime('2011-01-06'), 
    new DateTime('2011-01-07'), 
    new DateTime('2011-01-10'),
);

// process the array

$lastDate = null;
$ranges = array();
$currentRange = array();

foreach ($dates as $date) {

    if (null === $lastDate) {
        $currentRange[] = $date;
    } else {

        // get the DateInterval object
        $interval = $date->diff($lastDate);

        // DateInterval has properties for 
        // days, weeks. months etc. You should 
        // implement some more robust conditions here to 
        // make sure all you're not getting false matches
        // for diffs like a month and a day, a year and 
        // a day and so on...

        if ($interval->days === 1) {
            // add this date to the current range
            $currentRange[] = $date;    
        } else {
            // store the old range and start anew
            $ranges[] = $currentRange;
            $currentRange = array($date);
        }
    }

    // end of iteration... 
    // this date is now the last date     
    $lastDate = $date;
}

// messy... 
$ranges[] = $currentRange;

// print dates

foreach ($ranges as $range) {

    // there'll always be one array element, so 
    // shift that off and create a string from the date object 
    $startDate = array_shift($range);
    $str = sprintf('%s', $startDate->format('D j M'));

    // if there are still elements in $range
    // then this is a range. pop off the last 
    // element, do the same as above and concatenate
    if (count($range)) {
        $endDate = array_pop($range);
        $str .= sprintf(' to %s', $endDate->format('D j M'));
    }

    echo "<p>$str</p>";
}

输出：

Thu 30 Dec
Sat 1 Jan to Mon 3 Jan
Thu 6 Jan to Fri 7 Jan
Mon 10 Jan