blocks|key|4553793|text|这应该是可行的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4553794|echo+time()+-+strtotime("today");|code-block|syntax|javascript|4553795|这将只显示您的服务器时区。|4553796|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

This should work.

<pre><code>echo time() - strtotime("today");
</code></pre>

This will only show your servers timezone though.

blocks|key|4553862|text|我认为最简单的方法是将当前时间(以秒为单位)除以一天中的秒数(60*60*24)，然后取余数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4553863|(time()+%25+86400)|code-block|syntax|javascript|4553864|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Simplest I believe would be dividing the current time (in seconds) by the number of seconds in a day (60*60*24) and taking the remainder:

<pre><code>(time() % 86400)
</code></pre>

blocks|key|2441834|text|如果您使用的是DateTime：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2441835|+$timeDiff+=+$time->diff(new+\DateTime("today"));+
+$timeDiffSec+=+$timeDiff->h*+3600+%2B+$timeDiff->i*60+%2B+$timeDiff->s;|code-block|syntax|javascript|2441836|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you are using DateTime:

<pre><code> $timeDiff = $time-&gt;diff(new \DateTime("today")); 
 $timeDiffSec = $timeDiff-&gt;h* 3600 + $timeDiff-&gt;i*60 + $timeDiff-&gt;s;
</code></pre>

blocks|key|1841960|text|echo+(date('G')+*+3600+%2B+date('i')+*+60);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1841961|将当前小时乘以每小时的秒数，然后将其与分钟数乘以每分钟的秒数相加。|unstyled|1841962|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>echo (date('G') * 3600 + date('i') * 60);
</code></pre>

Multiply the current hour by the number of seconds in each hour and add it to the number of minutes multiplied by the number of seconds in each minute.

blocks|key|5970386|text|我认为你想要从一天的开始到一天中当前的小时和秒的时间，这可以这样做，你仍然需要设置你的时区时间来代替‘亚洲/卡拉奇’。这将获得从用户时区的午夜开始的正确时间，而不是服务器的时区时间。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5970387|下面是工作链接：http://codepad.viper-7.com/ykJC2R|offset|length|5970388|//Get+current+time+timestamp
$time_now+=+time();

//Create+DateTime+class+object
$date+=+new+DateTime();+

//Set+timestamp+to+DateTime+object
$date->setTimestamp(+$time_now+);

//Set+timezone+so+that+code+don't+get+server's+timezone+midnight+time
$date->setTimezone(new+DateTimeZone('Asia/Karachi'));

//Print+current+time+in+user's+timezone
echo+$date->format('Y-m-d+H:i')+.+"<br+/>";

//Get+time+stamp+for+midnight+tonight
$date->modify('today+midnight');
$midnight_time+=+$date->getTimestamp();

//Print+midnight+time+in+user's+timezone
echo+$date->format('Y-m-d+H:i')+.+"<br+/>";+

++++//Now+you+will+need+to+subtract+midnight+time+from+current+time+in+user's+timezone
$seconds_since_midnight+=+$time_now+-+$midnight_time;

//Print+seconds+since+midnight+in+your+timezone
echo+$seconds_since_midnight;|code-block|syntax|javascript|5970389|entityMap|0|LINK|mutability|MUTABLE|url|http://codepad.viper-7.com/ykJC2R^0|0|8|X|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I think you want to get time from start of the day to current hours and seconds of the day, this can be done like this, you will still need to set your timezone time in place of 'Asia/Karachi'. This gets correct time since midnight in user's timezone instead of server's timezone time.

Here is working link:
<a href="http://codepad.viper-7.com/ykJC2R" rel="nofollow">http://codepad.viper-7.com/ykJC2R</a>

<pre><code>//Get current time timestamp
$time_now = time();

//Create DateTime class object
$date = new DateTime(); 

//Set timestamp to DateTime object
$date-&gt;setTimestamp( $time_now );

//Set timezone so that code don't get server's timezone midnight time
$date-&gt;setTimezone(new DateTimeZone('Asia/Karachi'));

//Print current time in user's timezone
echo $date-&gt;format('Y-m-d H:i') . "&lt;br /&gt;";

//Get time stamp for midnight tonight
$date-&gt;modify('today midnight');
$midnight_time = $date-&gt;getTimestamp();

//Print midnight time in user's timezone
echo $date-&gt;format('Y-m-d H:i') . "&lt;br /&gt;"; 

 //Now you will need to subtract midnight time from current time in user's timezone
$seconds_since_midnight = $time_now - $midnight_time;

//Print seconds since midnight in your timezone
echo $seconds_since_midnight;
</code></pre>

blocks|key|5970452|text|最短的解决方案可能是这样的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5970453|$time+=+"12:34:56";
echo+strtotime("{$time}UTC",+0);|code-block|syntax|javascript|5970454|这样做的原因是strtotime使用第二个参数来确定时间字符串的日期部分。在本例中，我使用的是0，这意味着完整的字符串结果为1970-01-01+12:34:56+UTC。然后，strtotime返回UNIX时间戳(自1970-01-01+00:00:00+UTC以来经过的秒数)。注意:第一个参数附加了UTC，以防止时间被解释为本地时间。|offset|length|style|CODE|5970455|DateTime+(微秒)|5970456|比前面提到的DateTime::diff解决方案更快(3倍)、更精确的替代方案：|5970457|$date+=+new+DateTime;
[$h,+$m,+$s]+=+explode(':',+$date->format('H:i:s.u'));
echo+$h+*+3600+%2B+$m+*+60+%2B+$s;|5970458|entityMap^0|0|0|7|9|1B|1|1Q|N|2H|9|31|N|48|3|0|0|6|E|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]|$I|11|J|12|K|L]|$I|13|J|14|K|L]|$I|15|J|16|K|L]|$I|17|J|18|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1A|8|@$I|1B|J|1C|K|L]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|T|$]]

The shortest solution would probably be this:
<pre><code>$time = &quot;12:34:56&quot;;
echo strtotime(&quot;{$time}UTC&quot;, 0);
</code></pre>
The reason this works is that <code>strtotime</code> uses the second parameter to determine the date part of the time string. In this case, I'm using <code>0</code>, which means the full string results in <code>1970-01-01 12:34:56 UTC</code>. <code>strtotime</code> then returns the UNIX timestamp (the number of seconds elapsed since <code>1970-01-01 00:00:00 UTC</code>). Note: the first parameter has <code>UTC</code> appended to prevent the time being interpreted as local.
<h3>DateTime (with microseconds)</h3>
A faster (3×) and more precise alternative to the already mentioned <code>DateTime::diff</code> solution:
<pre class="lang-php prettyprint-override"><code>$date = new DateTime;
[$h, $m, $s] = explode(':', $date-&gt;format('H:i:s.u'));
echo $h * 3600 + $m * 60 + $s;
</code></pre>

blocks|key|2441614|text|根据您的评论，如果您正在接收字符串形式的时间，并且想要计算该时间的秒数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2441615|$time+=+strtotime($_GET['time']);+//+Do+some+verification+before+this+step
$midnight+=+strtotime("00:00");+//+Midnight+measured+in+seconds+since+Unix+Epoch
$sinceMidnight+=+$time+-+$midnight;+//+Seconds+since+midnight|code-block|syntax|javascript|2441616|这就对了。阅读PHP和strtotime()的time()函数。|offset|length|2441617|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.strtotime.php|1|http://www.php.net/manual/en/function.time.php^0|0|0|B|B|0|N|6|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]|$I|10|J|11|1|12]]|A|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

Based on your comment, if you are receiving the time as a string and want to calculate the number of seconds from that time:

<pre><code>$time = strtotime($_GET['time']); // Do some verification before this step
$midnight = strtotime("00:00"); // Midnight measured in seconds since Unix Epoch
$sinceMidnight = $time - $midnight; // Seconds since midnight
</code></pre>

There you go. Read into <a href="http://www.php.net/manual/en/function.time.php" rel="nofollow">time()</a> function of PHP and <a href="http://www.php.net/manual/en/function.strtotime.php" rel="nofollow">strtotime()</a>.

blocks|key|4553995|text|在Carbon中，午夜以来经过的秒数如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4553996|$seconds_since_midnight+=+$dt->secondsSinceMidnight()；|offset|length|style|CODE|4553997|虽然从午夜到现在还没几分钟，但我想你是这样做的：|4553998|$minutes_since_midnight+=+(int)+floor($dt->secondsSinceMidnight()/60);|4553999|entityMap^0|0|0|1H|0|0|0|1Y|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

In Carbon, the number of seconds elapsed since midnight can be found like this:

<code>$seconds_since_midnight = $dt-&gt;secondsSinceMidnight()</code>;

And though there's no minutes since midnight I suppose you do:

<code>$minutes_since_midnight = (int) floor($dt-&gt;secondsSinceMidnight()/60);</code>

blocks|key|1838028|text|echo+time()+-+strtotime('today');|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1838029|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>echo time() - strtotime('today');
</code></pre>

blocks|key|2441915|text|我坚持数字运算总是比字符串运算快的规则。当数字是整数时，运算速度会更快(因为CPU寄存器总是“整数宽”的，表示32位或64位，并且所有其他非浮点类型在执行任何操作之前都会转换为整数)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2441916|无论如何，我找到了这样的解决方案，用时区来计算午夜之前的秒数，包括：|2441917|$tillmidnight+=+86400+-+(time()+-+mktime(0,+0,+0));|offset|length|style|CODE|2441918|您希望获得从午夜开始经过的秒数，因此：|2441919|$sincemidnight+=+time()+-+mktime(0,+0,+0);|2441920|这是很好的审查您的php.ini，并设置您的时区(date.timezone下的日期部分)。如果您无法访问php.ini，可以使用date_default_timezone_set()；函数在PHP代码中设置您的时区。|2441921|entityMap^0|0|0|0|1F|0|0|0|16|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@$F|U|G|V|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|W|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|X|8|@$F|Y|G|Z|H|I]]|9|@]|A|$]]|$1|N|3|O|5|6|7|10|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|Q|$]]

I'm keeping the rule that operations on numbers are always faster than operations on strings. When the numbers are integers, operations are even faster (because CPU registers are always "integer wide", means have 32-bit or 64-bit and all other non-floating point types are converted to integer before any operation is performed).

Anyway, I found such solution to count seconds till midnight with timezone include:

<code>$tillmidnight = 86400 - (time() - mktime(0, 0, 0));</code>

You wanted to get seconds elapsed since midnight so:

<code>$sincemidnight = time() - mktime(0, 0, 0);</code>

It is good to review your php.ini also and set your time zone (date.timezone under [Date] section) there. If you do not have access to php.ini, you can set your time zone in PHP code using date_default_timezone_set(); function.

Using PHP how do you get the number of seconds elapsed since midnight of the current day?

All i've tried right now is:

<pre><code>$hour=substr(date("h:i:s"),0,2);
$minute=substr(date("h:i:s"),3,2);
echo $hour."\r\n";
echo $minute."\r\n";
</code></pre>

...but it doesn't return the correct server time of the response and I don't know how to do that.

How to get seconds elapsed since midnight

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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使用PHP，您如何获取从当天午夜开始经过的秒数？我现在试过的就是：$hour=substr(date("h:i:s"),0,2);$minute=substr(date("h:i:s"),3,2);echo $hour."\r\n";echo $minute."\r\n";...but，它没有返回响应的正确服务器时间，我不知道该怎么做。

问如何获取午夜以来经过的秒数
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