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
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// 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],);
}
希望本文所述对大家的PHP程序设计有所帮助。
