本文实例讲述了php计算两个日期相差天数的方法。分享给大家供大家参考。具体实现方法如下：
diff($date2);echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; // shows the total amount of days (not divided into years, months and days like above)echo "difference " . $interval->days . " days ";-------------------------------------------------------- OR /** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff() * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.*/function _date_range_limit($start, $end, $adj, $a, $b, $result){ if ($result[$a] = $end) { $result[$b] += intval($result[$a] / $adj); $result[$a] -= $adj * intval($result[$a] / $adj); } return $result;}function _date_range_limit_days($base, $result){ $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); _date_range_limit(1, 13, 12, "m", "y", &$base); $year = $base["y"]; $month = $base["m"]; if (!$result["invert"]) { while ($result["d"] < 0) { $month--; if ($month < 1) { $month += 12; $year--; } $leapyear = $year % 400 == 0 || <strong>（本文来源gaodai#ma#com搞@@代~&码网</strong><pre>搞代gaodaima码
($year % 100 != 0 && $year % 4 == 0); $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month]; $result[“d”] += $days; $result[“m”]–; } } else { while ($result[“d”] 12) { $month -= 12; $year++; } } } return $result;}function _date_normalize($base, $result){ $result = _date_range_limit(0, 60, 60, “s”, “i”, $result); $result = _date_range_limit(0, 60, 60, “i”, “h”, $result); $result = _date_range_limit(0, 24, 24, “h”, “d”, $result); $result = _date_range_limit(0, 12, 12, “m”, “y”, $result); $result = _date_range_limit_days(&$base, &$result); $result = _date_range_limit(0, 12, 12, “m”, “y”, $result); return $result;}/** * Accepts two unix timestamps. */function _date_diff($one, $two){ $invert = false; if ($one > $two) { list($one, $two) = array($two, $one); $invert = true; } $key = array(“y”, “m”, “d”, “h”, “i”, “s”); $a = array_combine($key, array_map(“intval”, explode(” “, date(“Y m d H i s”, $one)))); $b = array_combine($key, array_map(“intval”, explode(” “, date(“Y m d H i s”, $two)))); $result = array(); $result[“y”] = $b[“y”] – $a[“y”]; $result[“m”] = $b[“m”] – $a[“m”]; $result[“d”] = $b[“d”] – $a[“d”]; $result[“h”] = $b[“h”] – $a[“h”]; $result[“i”] = $b[“i”] – $a[“i”]; $result[“s”] = $b[“s”] – $a[“s”]; $result[“invert”] = $invert ? 1 : 0; $result[“days”] = intval(abs(($one – $two)/86400)); if ($invert) { _date_normalize(&$a, &$result); } else { _date_normalize(&$b, &$result); } return $result;}$date = “2014-12-04 19:37:22”;echo ‘
';print_r( _date_diff( strtotime($date), time() ) );echo '
‘; ?>
希望本文所述对大家学习php程序设计有所帮助。
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