php(date)

<?php
	//$t1 = time();
	//echo "当前时间戳为：".$t1;
	
	dade_default_timezone_set("PRC");
	$tt = time();
	echo "目前时间为：<br/>";
	//使用不同格式化字符测试输出效果
	echo date("Y年m月d日[l]H点i分s秒",$tt)."<br/>";
	echo date("Y-m-d h:i:s",$tt)."<br/>";
	echo date("Y-M-D H:I:S A",$tt)."<br/>";
	echo date("F,d,y l",$tt)."<br/>";
	echo date("Y-M-D H:I:S",$tt);
?>

<?php
	$tm = "2012-08-08 08:08:08";
	echo "时间为：".$tm."<br/>";
	//将格式转化为UNIX时间戳
	$tp = strtotime($tm);
	echo "此时间的UNIX时间戳为：".$tp."<br/>";
	$arl = getdate($tp);
	echo "年为".$arl["year"]."<br/>";
	echo "月为".$arl["mon"]."<br/>";
	echo "日为".$arl["mday"]."<br/>";
	echo "点为".$arl["hours"]."<br/>";
	echo "分为".$arl["minutes"]."<br/>";
	echo "秒为".$arl["seconds"]."<br/>";
?>

<?php
	/*if(checkdate(2,31,2012)){
		echo "不可能";
	}
	else{
		echo "2月没有31号";	
	}*/
	
	/*echo(strftime("%b,%d,%Y,%X",mktime(20,0,0,12,31,98)));
	echo "<br/>";
	echo(gmstrftime("%b,%d,%Y,%X",mktime(20,0,0,12,31,98)));
	echo "<br/>";
	//输出当前日期，时间和时区
	echo(gmstrftime("It is %b on %d,%Y,%X time zone:%Z",time()));
	echo "<br/>";*/
	
	$timestamp = mktime(0,0,0,3,31,2012);
	echo $timestamp;
	
?>

<?php
	$timestampA = mktime(0,0,0,3,31,2012);
	$timestampB = mktime(0,0,0,1,31,2012);
	if($timestampA>$timestampB){
		echo "三月时间戳大于一月的";
	}
	else if($timestampA<$timestampB){
		echo "三月小于一月";	
	}
	else{
		echo "相同";
	}
?>

<?php
	$timestampfuture = mktime(0,0,0,05,20,2018);
	$timestampnow = time();
	$timecount=$timestampfuture-$timestampnow;
	$days = round($timecount/86400);
	echo "今天是：".date("Y F d")."距离2018年5月20日还有".$days."天。";
?>

<?php
	$timestamp = microtime(true);
	echo $timestamp;
?>