php实现用已经过去多长时间的方式显示时间
这篇文章主要介绍了php实现用已经过去多长时间的方式显示时间,可实现相对时间的显示效果,非常具有实用价值,需要的朋友可以参考下。
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/>\n";
- }
- else {
- print 'The given timestamp: ' . date('l dS \of F Y h:i:s A',$time);
- print " - is NOT older than 30 minutes<br/>\n";
- }
- // short checks:
- if (time_is_older_than('10s', $time)){ print "Is older than 10 seconds<br/>\n"; }
- if (time_is_older_than('200m', $time)){ print "Is older than 200 minutes<br/>\n"; }
- if (time_is_older_than('2h', $time)){ print "Is older than 2 hours<br/>\n"; }
- if (time_is_older_than('4d', $time)){ print "Is older than 4 days<br/>\n"; }
- if (time_is_older_than('1y', $time)){ print "Is older than one year<br/>\n"; }
希望本文所述对大家的php程序设计有所帮助。