对于日历，我从数据库中读取开始日期和结束日期，dateRange函数为每个键创建一个有一天的数组，如下所示：
$total_dates[]=dateRange('2012-04-01','2012-04-05');
$total_dates[]=dateRange('2012-04-06','2012-04-09');
$total_dates[]=dateRange('2012-04-10','2012-04-15');
$total_dates[]=dateRange('2012-04-17','2012-04-21');
$total_dates[]=dateRange('2012-04-24','2012-04-28');
将输出：
Array (
[0] => Array ( [0] => 2012-04-01 [1] => 2012-04-02 [2] => 2012-04-03 [3] => 2012-04-04 [4] => 2012-04-05 )
[1] => Array ( [0] => 2012-04-06 [1] => 2012-04-07 [2] => 2012-04-08 [3] => 2012-04-09 )
[2] => Array ( [0] => 2012-04-10 [1] => 2012-04-11 [2] => 2012-04-12 [3] => 2012-04-13 [4] => 2012-04-14 [5] => 2012-04-15 )
[3] => Array ( [0] => 2012-04-17 [1] => 2012-04-18 [2] => 2012-04-19 [3] => 2012-04-20 [4] => 2012-04-21 )
[4] => Array ( [0] => 2012-04-24 [1] => 2012-04-25 [2] => 2012-04-26 [3] => 2012-04-27 [4] => 2012-04-28 )
)
现在，它应该在数组中包含的日期输出不可用，而在空闲日期输出可用。每天只能有一个预订（现在，稍后我还需要像上午和下午一样执行，所以这将在那时交叉）。
逻辑是从第一天到最后一天。如果不是，则无回声，如果是，则检查是否是此日期的最后一天Range，如果是的，则增加子数组的键。。。
这是代码，但如果它是最后一个键，则不会增加键。。。
reset($total_dates);
$array_i=0;
for ($i=1;$i<=$this_maxdays_month;$i++) {
if($i<10) {$i2="0".$i;} else {$i2=$i;} //if $i is 1-9, add a leading zero
if($i==1) {$month_begin=date('M',$this_date)." ";} else {$month_begin="";} //if 1st of month add e.g. Jan
if($total_dates[$array_i]) {
if (in_array("$year-month-$i2",$total_dates[$array_i])) {
echo "not available";
// now check if the last key in date range, if yes, increase key -> does not work!
if (key(array_slice($total_dates[$array_i], -1, 1, TRUE))+1==$i) {$array_i++;}
}
else {
echo "available";
}
}
}
附言：我也试过：
$count_max_array_keys=count($total_dates[$array_i])+1;
if (!array_key_exists($count_max_array_keys,$total_dates[$array_i])) {$array_i++;}
并使用+1（如在第一个示例中）。。。
有人知道我在这里错过了什么吗？？
提前谢谢！
UPDATE：它应该输出（稍后在日历视图中构建），如：
1st April 2012: booked
2nd April 2012: booked
3rd April 2012: booked (this is the last date of this dateRange, so increase key)
4th April 2012: (not in array anymore) available
5th April 2012: available
6th April 2012: (is in the next dateRange) booked
...
希望现在更清楚，thx！
更新2：如果我在与之前的array_slice完全相同的地方使用if ( (count($total_dates[$array_i])-1)+1==$i) {$array_i++;}，则会发生以下情况：
row-number $array_i output of the count-statement
1: 0 4
2: 0 4
3: 0 4
4: 0 4
5: 1 3 (this is the last key, but here $array_i should still be 0, as the increase happens after the output, and why is suddenly count only 3?)
6-30: 1 3 (it never increases again)
我知道我没有完整的代码，所以我对它进行了大量重写，使它能够单独执行。我希望这将帮助你找到问题的答案。
<?php
$total_dates = array();
$total_dates[]=array('2012-04-01','2012-04-02','2012-04-03','2012-04-04','2012-04-05');
$total_dates[]=array('2012-04-24','2012-04-25','2012-04-26','2012-04-27');
$this_maxdays_month = 30;
$year = "2012";
$month = "04";
function date_is_first_in_set($date, $total_dates)
{
$ret = false;
for($i = 0; $i < count($total_dates); $i++)
{
if($date == $total_dates[$i][0])
{
$ret = true;
break;
}
}
return $ret;
}
function date_is_last_in_set($date, $total_dates)
{
$ret = false;
for($i = 0; $i < count($total_dates); $i++)
{
if($date == end($total_dates[$i]))
{
$ret = true;
break;
}
}
return $ret;
}
function date_available($date, $total_dates)
{
$ret = true;
for($i = 0; $i < count($total_dates); $i++)
{
if(in_array($date, $total_dates[$i]))
{
$ret = false;
break;
}
}
return $ret;
}
for($i = 1; $i <= $this_maxdays_month; $i++)
{
$date = $year.'-'.$month.'-'.str_pad($i, 2, '0', STR_PAD_LEFT);
echo $date.': ';
if(date_available($date, $total_dates))
{
echo 'available';
}
else
{
echo 'unavailable';
}
if(date_is_first_in_set($date, $total_dates))
{
echo ' FIRST!';
}
if(date_is_last_in_set($date, $total_dates))
{
echo ' LAST!';
}
echo "<br>'n";
}
?>
其输出为：
2012-04-01: unavailable FIRST!
2012-04-02: unavailable
2012-04-03: unavailable
2012-04-04: unavailable
2012-04-05: unavailable LAST!
2012-04-06: available
2012-04-07: available
2012-04-08: available
2012-04-09: available
2012-04-10: available
2012-04-11: available
2012-04-12: available
2012-04-13: available
2012-04-14: available
2012-04-15: available
2012-04-16: available
2012-04-17: available
2012-04-18: available
2012-04-19: available
2012-04-20: available
2012-04-21: available
2012-04-22: available
2012-04-23: available
2012-04-24: unavailable FIRST!
2012-04-25: unavailable
2012-04-26: unavailable
2012-04-27: unavailable LAST!
2012-04-28: available
2012-04-29: available
2012-04-30: available