Example of how PHP implements time comparison and time difference calculation.

Example of how PHP implements time comparison and time difference calculation.

This article describes how to implement time comparison and Time Difference Calculation in PHP. We will share this with you for your reference. The details are as follows:

Example 1:

<? Php // PHP time comparison and time difference calculation: // (1 ). compare the two absolute time headers ("Content-type: text/html; charset = UTF-8"); date_default_timezone_set ('prc '); $ zero1 = date ("Y-m-d h: I: s"); // $ zero1 = "21:07:00"; $ zero2 = "21:07:00 "; echo "zero1 time :". $ zero1. "<br>"; echo "zero2 time :". $ zero2. "<br>"; // strtotime-parses the datetime description of any English text into a Unix timestamp if (strtotime ($ zero1) <strtotime ($ zero2 )) {echo "zero1 earlier than zero2";} else if (strtotime ($ zero1)> str Totime ($ zero2) {echo "zero2 earlier than zero1";} else {echo "zero2 equals zero1";} echo "<br/>";?>

Running result:

Zero1 time: 12: 18: 39zero2 time: 21: 07: 00zero2 earlier than zero1

Example 2:

<? Php // (2 ). countdown applet $ zero1 = strtotime (date ("y-m-d h: I: s"); // current time, note that H is 24 hours h is 12 hours $ zero2 = strtotime ("00:00:00"); // Chinese new year's time // float ceil (float $ value) // return the next integer not less than value. If the value has a decimal part, it is entered. $ Guonian = ceil ($ zero2-$ zero1)/86400 ); // 60 s * 60 min * 24 hecho "<strong> $ guonian </strong> days before the Chinese New Year! "; Echo" <br/> ";?>

Running result:

There are 161 days before the Chinese New Year

Example 3:

<? Php // (3 ). PHP calculates two Time Difference Methods $ startdate = date ("y-m-d H: I: s"); $ enddate = "18:00:00 "; // floor-rounding method to get the integer // float floor (float $ value) // returns the nearest integer not greater than the value, and rounds the fractional part. $ Date = floor (strtotime ($ enddate)-strtotime ($ startdate)/86400); $ hour = floor (strtotime ($ enddate)-strtotime ($ startdate )) % 86400/3600); $ minute = floor (strtotime ($ enddate)-strtotime ($ startdate) % 86400/60); $ second = floor (strtotime ($ enddate) -strtotime ($ startdate) % 86400% 60); echo "there is still a period from the End Time ". $ date. "Day ". $ hour. "Hour ". $ minute. "Minute ". $ second. "seconds"; echo "<br/>";?>

Running result:

Now there are 6 days, 5 hours, 339 minutes, 56 seconds from the end time.

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Online date/day calculator:
Http://tools.jb51.net/jisuanqi/date_jisuanqi

Online date calculator/days calculator:
Http://tools.jb51.net/jisuanqi/datecalc

Online date-days difference calculator:
Http://tools.jb51.net/jisuanqi/onlinedatejsq

Unix timestamp Conversion Tool:
Http://tools.jb51.net/code/unixtime