PHP method to compare the date size of two strings, PHP string_PHP tutorial

php implements the method of comparing the date size of two strings, php string

The example in this article describes the method of php comparing the date size of two strings. Share it with everyone for your reference. The details are as follows:

<&#63;php
function dateBDate($date1, $date2) {
// 日期1是否大于日期2
 $month1 = date("m", strtotime($date1));
 $month2 = date("m", strtotime($date2));
 $day1 = date("d", strtotime($date1));
 $day2 = date("d", strtotime($date2));
 $year1 = date("Y", strtotime($date1));
 $year2 = date("Y", strtotime($date2));
 $from = mktime(0, 0, 0, $month1, $day1, $year1);
 $to = mktime(0, 0, 0, $month2, $day2, $year2);
 if ($from > $to) {
 return true;
 } else {
 return false;
 } 
} 
&#63;>
$date1 = "2009-10-13";
$date= mktime(0, 0, 0, date("m", strtotime($date1)), date("d", strtotime($date1)), date("Y", strtotime($date1)));

Finally get the Unix timestamp of a date $date=1255392000.

Many times when searching, the search time cannot be greater than the current date. The writing method of the comparison function is roughly the same as the above function, as follows:

function dateBCurrent($date){
//日期是否大于当前日期
 $currentDate=date("Y-m-d");
 //获取当前日期
 $cYear=date("Y",strtotime($currentDate));
 $cMonth=date("m",strtotime($currentDate));
 $cDay=date("d",strtotime($currentDate));
 $year=date("Y",strtotime($date));
 $month=date("m",strtotime($date));
 $day=date("d",strtotime($date));
 $currentUnix=mktime(0,0,0,$cMonth,$cDay,$cYear);
 //当前日期的 Unix 时间戳
 $dateUnix=mktime(0,0,0,$month,$day,$year);
 //待比较日期的 Unix 时间戳
 if($dateUnix<=$currentUnix){
 return true;
 }else{
 return false;
 }
}

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/998547.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/998547.htmlTechArticleHow to compare the date sizes of two strings in php, php string This article describes how to compare two strings in php String date size method. Share it with everyone for your reference. Specifically...