Php 如何计算从时间请求开始的2小时（以秒为单位）

我的服务器时间是GMT，所以我将其转换为亚洲/吉隆坡时间。我需要计算当前时间和发出时间请求之间的时间差。发出请求的时间存储在数据库中，并在

$reset\u req

变量中检索

$reset_req="2015-06-30 11:30:23";   

$timezone_offset = +8; // us central time (gmt-6) for me

if(isset($reset_req)){
 $request_date2 = strtotime($reset_req)+$timezone_offset*60*60;
}
echo "current time= ".strtotime(time());
echo"<br/>";
echo "time req made=".strtotime($request_date2);
echo"<br/>";
  $timediff = strtotime(time()) - strtotime($request_date2); // in seconds

if($timediff < 2 hours)//how to calculate 2 hours here
{
//do something
}

$reset_req=“2015-06-30 11:30:23”；
$timezone_offset=+8；//美国中部时间（gmt-6）对我来说
如果（isset（$reset_req））{
$request_date2=strottime（$reset_req）+$timezone_offset*60*60；
}
echo“current time=.strotime（time（））；
回声“
”；
echo“time req make=“.strotime（$request_date2））；
回声“
”；
$timediff=strottime（time（））-strottime（$request_date2）；//几秒钟内
if（$timediff<2小时）//这里如何计算2小时
{
//做点什么
}
$hour=3600//一小时有3600秒
如果（$timediff<2*$hour）
{
//做点什么
}
$timediff以秒为单位。因此，您必须将其转换为小时或将2小时转换为秒，然后需要进行如下比较：

替换

if($timediff < 2 hours)//how to calculate 2 hours here
{
 //do something
}

if（$timediff<2小时）//这里如何计算2小时
{
//做点什么
}

与

if（$timediff<（2*3600））//这里如何计算2小时
{
//做点什么
}
每个人都说过如何计算2小时（2*3600秒）。但是他们没有告诉你的是你不能这么做：
strotime（time（））
time（）
已经为您提供了Unix时间戳，因此您无法将其转换两次

您的代码应该更像这样

<?php

$reset_req = "2015-06-30 11:30:23";   

$timezone_offset = +8; // us central time (gmt-6) for me

if(isset($reset_req)){
      $request_date2 = strtotime($reset_req)+$timezone_offset*60*60;
      $current = time();
} else {
      echo '$reset_req was not set';
      exit;
}

echo "current time= " . $current . "<br />";
echo "time req made=" . $request_date2 . "<br />";

$timediff = $current - $request_date2; // in seconds

if($timediff < (2*3600))//how to calculate 2 hours here
{
    echo "less than 7200 sec have past since $request_date2. Past: $timediff seconds";    
}else{
    echo "more than 7200 sec have past since $request_date2. Past: $timediff seconds";   
}

?>


试试这个

<?php

$reset_req = "2015-06-30 11:30:23"; 

//set default timezone here
date_default_timezone_set("Asia/Kuala_Lumpur");

$request_date2 = '';

if(isset($reset_req))
{
    $request_date2 = strtotime($reset_req);
}

echo "Current time = ".time();
echo"<br/>";
echo "Time req made =".$request_date2;
echo"<br/>";

$timediff = time() - $request_date2; // in seconds
echo "<br>Time Differnce : ".$timediff;

//how to calculate 2 hours here
if($timediff < 2*3600)
{
    //do something
}

?>


“你试着在两个小时内放多少秒吗？”罗兰肖说，“7200秒钟，我猜，请考虑至少添加一些词来解释为什么这个代码片段如何回答OP问题。”
<?php

$reset_req = "2015-06-30 11:30:23";   

$timezone_offset = +8; // us central time (gmt-6) for me

if(isset($reset_req)){
      $request_date2 = strtotime($reset_req)+$timezone_offset*60*60;
      $current = time();
} else {
      echo '$reset_req was not set';
      exit;
}

echo "current time= " . $current . "<br />";
echo "time req made=" . $request_date2 . "<br />";

$timediff = $current - $request_date2; // in seconds

if($timediff < (2*3600))//how to calculate 2 hours here
{
    echo "less than 7200 sec have past since $request_date2. Past: $timediff seconds";    
}else{
    echo "more than 7200 sec have past since $request_date2. Past: $timediff seconds";   
}

?>

<?php

$reset_req = "2015-06-30 11:30:23"; 

//set default timezone here
date_default_timezone_set("Asia/Kuala_Lumpur");

$request_date2 = '';

if(isset($reset_req))
{
    $request_date2 = strtotime($reset_req);
}

echo "Current time = ".time();
echo"<br/>";
echo "Time req made =".$request_date2;
echo"<br/>";

$timediff = time() - $request_date2; // in seconds
echo "<br>Time Differnce : ".$timediff;

//how to calculate 2 hours here
if($timediff < 2*3600)
{
    //do something
}

?>