php将日期格式转换成xx天前的格式
这篇文章主要介绍了php将日期格式转换成xx天前的格式,涉及php时间操作及正则匹配的技巧,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将日期格式转换成xx天前格式的方法，分享给大家供大家参考，具体如下：
这段代码可以把时间格式化成3天前，5秒前，2年前的形式
- // convert a date into a string that tells how long ago
- // that date was.... eg: 2 days ago, 3 minutes ago.
- function ago($d) {
- $c = getdate();
- $p = array('year', 'mon', 'mday', 'hours', 'minutes', 'seconds');
- $display = array('year', 'month', 'day', 'hour', 'minute', 'second');
- $factor = array(0, 12, 30, 24, 60, 60);
- $d = datetoarr($d);
- for ($w = 0; $w < 6; $w++) {
- if ($w > 0) {
- $c[$p[$w]] += $c[$p[$w-1]] * $factor[$w];
- $d[$p[$w]] += $d[$p[$w-1]] * $factor[$w];
- }
- if ($c[$p[$w]] - $d[$p[$w]] > 1) {
- return ($c[$p[$w]] - $d[$p[$w]]).' '.$display[$w].'s ago';
- }
- }
- return '';
- }
- // you can replace this if need be.
- // This converts my dates returned from a mysql date string
- // into an array object similar to that returned by getdate().
- function datetoarr($d) {
- preg_match("/([0-9]{4})(\\-)([0-9]{2})(\\-)([0-9]{2})([0-9]{2})(\\:)([0-9]{2})(\\:)([0-9]{2})/",$d,$matches);
- return array(
- 'seconds' => $matches[10],
- 'minutes' => $matches[8],
- 'hours' => $matches[6],
- 'mday' => $matches[5],
- 'mon' => $matches[3],
- 'year' => $matches[1],
- );
- }