PHP计算两个日期内的天数, Javascript 计算两个日期内的天数, Finding the number of days between two dates



function dateDiff($start, $end) {
  $start_ts = strtotime($start);
  $end_ts = strtotime($end);
  $diff = $end_ts - $start_ts;
  return round($diff / 86400);
echo dateDiff("2011-02-15", "2012-01-16").'days';
//Get number of days deference between current date and given date.
echo dateDiff("2011-02-15", date('Y-m-d')).'days'; 


    echo $diff->format('%R%a days');


Javscript 版

// new Date("dateString") is browser-dependent and discouraged, so we'll write
// a simple parse function for U.S. date format (which does no error checking)
function parseDate(str) {
    var mdy = str.split('/');
    return new Date(mdy[2], mdy[0]-1, mdy[1]);

function datediff(first, second) {
    // Take the difference between the dates and divide by milliseconds per day.
    // Round to nearest whole number to deal with DST.
    return Math.round((second-first)/(1000*60*60*24));

alert(datediff(parseDate(first.value), parseDate(second.value)));


<input id="first" value="1/1/2000"/>
<input id="second" value="1/1/2001"/>


或者用 Moment 库

var a = moment([2007, 0, 29]);
var b = moment([2007, 0, 28]);
a.diff(b, 'days')   // =1



a.diff(b, 'days')+1   // =2



moment("2012-02", "YYYY-MM").daysInMonth() // 29
moment("2012-01", "YYYY-MM").daysInMonth() // 31



本文:PHP计算两个日期内的天数, Javascript 计算两个日期内的天数, Finding the number of days between two dates


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