以下脚本根据您的英国日期数组创建时间戳数组,然后计算最大和最小时间戳以计算天数差异。
如果时间戳默认为 0,则不会添加到时间戳数组中,避免一个错误日期默认为纪元(即当日期无效或纪元 1/1/1970 前)产生巨大结果
<?php
$datesarray = array('10-05-2013', '20-05-2013', '12-08-2013');
$date_diff=0; // default for 0 or 1 dates
if( (is_array($datesarray)) && (sizeof($datesarray)>1) )
{
$timestampsarray=array();
reset($datesarray);
while(list($key,$value)=each($datesarray))
{
$timestamp=timestamp_from_UK($value);
if($timestamp!=0) $timestampsarray[$key]=$timestamp;
}
$date_diff = abs(max($timestampsarray)-min($timestampsarray)) / 86400;
}
echo $date_diff;
function timestamp_from_UK($ukdatetime)
{
// where PHP is processing UK dates d-m-y correctly
$ukdatetime=str_replace('/', '-', $ukdatetime);
if(date("d", strtotime("1-2-1970"))==1) return strtotime($ukdatetime);
// Fallback script for when PHP is NOT processing UK dates
$success=false;
if(!$success) $success=preg_match("/([0-9]{1,2})[^0-9]([0-9]{1,2})[^0-9]([0-9]{2,4})[^0-9]([0-9]{1,2})[^0-9]([0-9]{1,2})[^0-9]([0-9]{1,2})/", $ukdatetime, $matches);
if(!$success) $success=preg_match("/([0-9]{1,2})[^0-9]([0-9]{1,2})[^0-9]([0-9]{2,4})[^0-9]([0-9]{1,2})[^0-9]([0-9]{1,2})/", $ukdatetime, $matches);
if(!$success) $success=preg_match("/([0-9]{1,2})[^0-9]([0-9]{1,2})[^0-9]([0-9]{2,4})/", $ukdatetime, $matches);
if(!$success) return 0;
// ensure all values are set - to avoid invalid offset
for($i=4;$i<=6;$i++)
{
if(!isset($matches[$i])) $matches[$i]=0;
}
// $matches[0] is the full matched string
return mktime($matches[4], $matches[5], $matches[6], $matches[2], $matches[1], $matches[3]);
}
?>