本文实例讲述了php实现求相对时间函数。分享给大家供大家参考。具体实现方法如下：
<?phpfunction relativeTime($time = false, $limit = 86400, $format = 'g:i A M jS') { if (empty($time) || (!is_string($time) & amp; & amp; !is_numeric($time))) $time = time(); elseif (is_string($time)) $time = strtotime($time); $now = time(); $relative = ''; if ($time === $now) $relative = 'now'; elseif ($time > $now) $relative = 'in the future'; else { $diff = $now - $time; if ($diff >= $limit) $relative = date($format, $time); elseif ($diff < 60) { $relative = 'less than one minute ago'; } elseif (($minutes = ceil($diff / 60)) < 60) { $relative = $minutes . ' minute' . (((int)$minutes === 1) ? '' : 's') . ' ago'; } else { $hours = ceil($diff / 3600); $relative = 'about ' . $hours . ' hour' . (((int)$hours === 1) ? '' : 's') . ' ago'; } } return $relative;}希望本文所述对大家的php程序设计有所帮助。
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