php实现用已经过去多长时间的方式显示时间

本文实例讲述了php用已经过去多长时间的方式显示时间的方法。分享给大家供大家参考。具体如下：

这里以一种可读性比较好的方式显示已经过去多长时间，比如：距离现在10秒，距离现在1天等等。

function time_is_older_than($t, $check_time){  $t = strtolower($t);  $time_type = substr(preg_replace("/[^a-z]/", "", $t), 0, 1);  $val = intval(preg_replace("/[^0-9]/", "", $t));  $ts = 0;  // (s)econds, (m)inutes, (d)ays, (y)ears  if ($time_type == "s"){ $ts = $val; }  else if ($time_type == "m"){ $ts = $val * 60; }  else if ($time_type == "h"){ $ts = $val * 60 * 60; }  else if ($time_type == "d"){ $ts = $val * 60 * 60 * 24; }  else if ($time_type == "y"){ $ts = $val * 60 * 60 * 24 * 365; }  else { die("Unknown time format given!"); }  if ($check_time < (time()-$ts)){ return true; }  return false;}//使用范例：// timestamp to test: // (could be from an database or something else)$time = 1146722922;// long if check:if (time_is_older_than("30m", $time)){  print "The given timestamp: " . date("l dS of F Y h:i:s A",$time);  print " - is older than 30 minutes<br/>";}else {  print "The given timestamp: " . date("l dS of F Y h:i:s A",$time);  print " - is NOT older than 30 minutes<br/>";}// short checks:if (time_is_older_than("10s", $time)){ print "Is older than 10 seconds<br/>"; }if (time_is_older_than("200m", $time)){ print "Is older than 200 minutes<br/>"; }if (time_is_older_than("2h", $time)){ print "Is older than 2 hours<br/>"; }if (time_is_older_than("4d", $time)){ print "Is older than 4 days<br/>"; }if (time_is_older_than("1y", $time)){ print "Is older than one year<br/>"; }

希望本文所述对大家的php程序设计有所帮助。