<?php
echo $new_time=date("Y-m-d H:i:s"),"\n"; // 输出系统的当前时间
echo strtotime($new_time),"\n";//将系统的当前时间转换成时间戳进行输出

echo date('U'),"\n";//该函数同上函数功能一样 将系统的当前时间转换成时间戳进行输出
$timestamp="1280731392"; //定义时间戳
echo date("Y-m-d H:i:s",$timestam),"\n"//将时间戳转换成标准时间进行输出
/*
$a="2010-08-02 08:17:55";
$b="1280737570";

echo "DATE_ATOM = ".date(DATE_ATOM);   
echo "<p>DATE_COOKIE = ".date(DATE_COOKIE);
echo "<p>DATE_ISO8601 = ".date(DATE_ISO8601);
echo "<p>DATE_RFC822 = ".date(DATE_RFC822);
echo "<p>DATE_RFC850 = ".date(DATE_RFC850);
echo "<p>DATE_RSS = ".date(DATE_RSS);
echo "<p>DATE_W3C = ".date(DATE_W3C),"\n";

echo strtotime ("now"), "\n";
echo strtotime ("10 September 2000"), "\n";
echo strtotime ("+1 day"), "\n";
echo strtotime ("+1 week"), "\n";
echo strtotime ("+1 week 2 days 4 hours 2 seconds"), "\n";
echo strtotime ("next Thursday"), "\n";
echo strtotime ("last Monday"), "\n";
*/
?>