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PHP 时间和日期_PHP教程_编程技术

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Release: 2016-06-20 12:33:05
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<?php
    header("Content-type: text/html; charset=utf-8"); 
    date_default_timezone_set("PRC");
    //PHP提供了内置函数time()来取得服务器当前时间的时间戳。
    $curtime = time();
    echo $curtime;
    echo "<hr/>";
 
    //date() 函数用于格式化时间,返回一个字符串
    $date= date("Y-m-d H:i",$curtime);
    echo $date;
    echo "<hr/>";
 
    //mktime() 函数用于从日期取得时间戳,成功返回时间戳,否则返回 FALSE 
    // mktime(时, 分, 秒, 月, 日, 年)
    $mktime = mktime("21","50","18","12","30","2015");
    echo $mktime;
    echo "<hr/>";
 
    $datetime=date("Y-m-d H:i",$mktime);
    echo $datetime;
    echo "<hr/>";
    //strtotime() 函数用于将英文文本字符串表示的日期转换为时间戳
    $strtime = "2015-10-11 12:10";
    $timestr = strtotime("$strtime");
    echo $timestr;
    echo "<hr/>";
 
    echo date("Y-m-d H:i",$timestr);
 
    echo "<hr/>";
     
    //要求用户在登陆网站在2小时后失效而需要重新登录的例子
    $expiration = time()+2*3600;//得到当前时间延迟2小时候的时间戳
    echo $expiration;
?>
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