blocks|key|1407872|text|最简单的也是Apache+Bench+(称为ab__)，它是随Apache提供的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1407873|1407874|这是一个命令行工具|unordered-list-item|1407875|，可以将许多请求并行发送到|1407876|，并报告计时、错误...|1407877|1407878|看起来很适合你幻灯片上展示的那种非常简单的报告。|1407879|(它实际上报道的不止这些)|1407880|如果您的需求稍微复杂一些，Siege可能是一个很好的选择。|1407881|“围城”的一个有趣之处在于，它可以从文件中获取URL列表，而不是只处理一个URL。|1407882|这些工具的一个有趣之处在于，您不仅测量了执行特定代码部分所用的时间(就像在代码中直接使用时那样)，而且还测量了为页面提供服务所需的全部时间。|1407883|此外，它不仅可以对PHP代码进行基准测试，因为它处理的是HTTP请求，而不是代码本身。|1407884|entityMap|0|LINK|mutability|MUTABLE|url|http://httpd.apache.org/docs/2.0/programs/ab.html|1|http://www.joedog.org/index/siege-home^0|M|2|6|C|0|0|0|0|0|0|0|0|0|D|5|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|F|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1H|8|@]|D|@]|E|$]]|$1|J|3|K|5|I|7|1I|8|@]|D|@]|E|$]]|$1|L|3|M|5|I|7|1J|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|1L|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1M|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1N|8|@]|D|@$9|1O|A|1P|1|1Q]]|E|$]]|$1|U|3|V|5|6|7|1R|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|1S|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|1T|8|@]|D|@]|E|$]]|$1|10|3|-4|5|6|7|1U|8|@]|D|@]|E|$]]]|11|$12|$5|13|14|15|E|$16|17]]|18|$5|13|14|15|E|$16|19]]]]

The most simple too is <a href="http://httpd.apache.org/docs/2.0/programs/ab.html" rel="noreferrer">Apache Bench</a> (called <code>ab</code>), which is provided with Apache :

<ul>
<li>It's a command-line tool</li>
<li>That can send many requests, in parallel, to and URL</li>
<li>And reports timings, errors, ...</li>
</ul>

Seems to fit the kind of very simple reporting that's presented on your slide.
 (It does actually report more than that)

 
If your needs ar ea bit more complex, <a href="http://www.joedog.org/index/siege-home" rel="noreferrer">Siege</a> can be a good alternative.

An interesting thing with Siege is that it can take a list of URLs from a file, instead of working with just one.

 
An interesting thing with those tools is that you are not measuring only the time taken to execute a specific portion of code (like you would if using <a href="http://fr2.php.net/microtime" rel="noreferrer"><code>microtime</code></a> directly in your PHP code), but you're getting the whole time that was required to serve the page.

Also, it can benchmark more than just PHP code, as it's working on the HTTP request, and not the code itself.

blocks|key|1408064|text|有很多方法可以做到这一点。我个人非常喜欢通过以下方式使用microtime：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1408065|//+Start+of+code
$time+=+microtime(true);+//+Gets+microseconds

//+Rest+of+code

//+End+of+code
echo+"Time+Elapsed:+".(microtime(true)+-+$time)."s";|code-block|syntax|javascript|1408066|这将为您提供微秒级的精度。|1408067|如果您正在编写命令行脚本(如Facebook字谜)，您可以使用just+time。|1408068|time+php+dancebattle.php+~/input.dat
Win

real++++0m0.152s
user++++0m0.142s
sys+++++0m0.012s|1408069|我忘记了监控页面加载时间的方法(从浏览器)。您可以使用Firebug中的NET选项卡(针对Firefox)来执行此操作。它可以让你看到不同的文件加载(AJAX，JS，CSS，图片等)。|1408070|entityMap|0|LINK|mutability|MUTABLE|url|http://us.php.net/manual/en/function.microtime.php^0|S|9|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|C|$]]|$1|M|3|N|5|F|7|15|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

There are many ways to do this. I've personally been a fan of using <a href="http://us.php.net/manual/en/function.microtime.php" rel="noreferrer">microtime</a> in the following way:

<pre><code>// Start of code
$time = microtime(true); // Gets microseconds

// Rest of code

// End of code
echo "Time Elapsed: ".(microtime(true) - $time)."s";
</code></pre>

That will give you microsecond accuracy. 

If you are writing command-line scripts (like Facebook puzzles), you can use just time.

<pre><code>time php dancebattle.php ~/input.dat
Win

real 0m0.152s
user 0m0.142s
sys 0m0.012s
</code></pre>

I forgot about the method of monitoring page load times (from a browser). You can use the NET tab from Firebug (for Firefox) to do just that. It will let you watch the various file loads (AJAX, JS, CSS, Images, etc.).

blocks|key|223183|text|++$+time+curl+http://www.example.com/|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|223184|请注意，它会对整个请求进行计时，包括网络延迟。但那可能是你想要的？|unstyled|223185|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> $ time curl http://www.example.com/
</code></pre>

Note that it times the whole request, including network latency. But that may be want you want?

blocks|key|972261|text|试试https://github.com/fotuzlab/appgati|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|972262|它允许在代码中定义步骤，并报告两个步骤之间的时间、内存使用、服务器负载等。|972263|类似于：|972264|++++$appgati->Step('1');

++++//+Do+some+code+...

++++$appgati->Step('2');

++++$report+=+$appgati->Report('1',+'2');
++++print_r($report);|code-block|syntax|javascript|972265|示例输出数组：|972266|Array
(
++++[Clock+time+in+seconds]+=>+1.9502429962158
++++[Time+taken+in+User+Mode+in+seconds]+=>+0.632039
++++[Time+taken+in+System+Mode+in+seconds]+=>+0.024001
++++[Total+time+taken+in+Kernel+in+seconds]+=>+0.65604
++++[Memory+limit+in+MB]+=>+128
++++[Memory+usage+in+MB]+=>+18.237907409668
++++[Peak+memory+usage+in+MB]+=>+19.579357147217
++++[Average+server+load+in+last+minute]+=>+0.47
++++[Maximum+resident+shared+size+in+KB]+=>+44900
++++[Integral+shared+memory+size]+=>+0
++++[Integral+unshared+data+size]+=>+0
++++[Integral+unshared+stack+size]+=>+
++++[Number+of+page+reclaims]+=>+12102
++++[Number+of+page+faults]+=>+6
++++[Number+of+block+input+operations]+=>+192
++++[Number+of+block+output+operations]+=>+
++++[Number+of+messages+sent]+=>+0
++++[Number+of+messages+received]+=>+0
++++[Number+of+signals+received]+=>+0
++++[Number+of+voluntary+context+switches]+=>+606
++++[Number+of+involuntary+context+switches]+=>+99
)|972267|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/fotuzlab/appgati^0|2|Z|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|C|$]]|$1|O|3|P|5|J|7|16|8|@]|9|@]|C|$K|L]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

Try <a href="https://github.com/fotuzlab/appgati" rel="nofollow">https://github.com/fotuzlab/appgati</a>

It allows to define steps in the code and reports time, memory usage, server load etc between two steps.

Something like:

<pre><code> $appgati-&gt;Step('1');

 // Do some code ...

 $appgati-&gt;Step('2');

 $report = $appgati-&gt;Report('1', '2');
 print_r($report);
</code></pre>

Sample output array:

<pre><code>Array
(
 [Clock time in seconds] =&gt; 1.9502429962158
 [Time taken in User Mode in seconds] =&gt; 0.632039
 [Time taken in System Mode in seconds] =&gt; 0.024001
 [Total time taken in Kernel in seconds] =&gt; 0.65604
 [Memory limit in MB] =&gt; 128
 [Memory usage in MB] =&gt; 18.237907409668
 [Peak memory usage in MB] =&gt; 19.579357147217
 [Average server load in last minute] =&gt; 0.47
 [Maximum resident shared size in KB] =&gt; 44900
 [Integral shared memory size] =&gt; 0
 [Integral unshared data size] =&gt; 0
 [Integral unshared stack size] =&gt; 
 [Number of page reclaims] =&gt; 12102
 [Number of page faults] =&gt; 6
 [Number of block input operations] =&gt; 192
 [Number of block output operations] =&gt; 
 [Number of messages sent] =&gt; 0
 [Number of messages received] =&gt; 0
 [Number of signals received] =&gt; 0
 [Number of voluntary context switches] =&gt; 606
 [Number of involuntary context switches] =&gt; 99
)
</code></pre>

blocks|key|972130|text|您可以在处理开始和输出结束时使用microtime()，然后计算差值并根据需要将其转换为秒。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|972131|这将只测量PHP端的执行时间，而不是整个页面加载时间，因为它似乎在您的链接中，但它将使您能够比较各种方法的性能，例如。|972132|entityMap|0|LINK|mutability|MUTABLE|url|http://fr.php.net/manual/fr/function.microtime.php^0|G|B|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

You can use <a href="http://fr.php.net/manual/fr/function.microtime.php" rel="nofollow noreferrer">microtime()</a> at the start of processing and at end of output, then calculate the difference and convert it to seconds if wanted.

This will only measure the execution time for PHP side, not the whole page load time at it seems to be in your link, but it will able you to compare various methods performance, for instance.

blocks|key|1408154|text|你说你想测量“页面加载时间”，这与完全不同的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1408155|1408156|生成页面(由PHP代码中的内部计时器测量)|ordered-list-item|offset|length|style|BOLD|1408157|并将其从服务器卸载(由ab测量)|1408158|所需的时间|1408159|页面加载时间应该包括解析HTML并向服务器发出后续请求以获取所有相关内容(javascript文件、css文件、图像等)所用的时间。|1408160|衡量这一点实际上相当困难。要正确做到这一点，您需要推送所有逻辑客户端-当用户单击链接或提交表单时，删除带有时间戳的javascript+cookie，然后在随后的页面中使用onload方法(在加载完所有内容后触发)将此时间与当前时间进行比较。然后，您需要一种将此度量报告回服务器的方法--您可以使用Ajax请求，或者将时间存储在另一个cookie中，以便在后续请求中显示。|1408161|请注意，每个客户端所需的文件将取决于浏览器端缓存的当前状态。|1408162|如果您可以将点击流从日志中分离出来，那么您可以通过检查text/html内容类型的请求与上次连续请求text/html以外的内容类型之间的间隔来获得一个很好的近似值。但是，如果用户同时使用多个浏览器窗口进行交互，您的统计数据将会出现偏差。|1408163|entityMap^0|0|0|0|L|0|0|G|0|0|5|0|0|1U|0|0|56|0|0|U|0|0|3B|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Z|8|@$F|10|G|11|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|12|8|@$F|13|G|14|H|I]]|9|@]|A|$]]|$1|L|3|M|5|6|7|15|8|@$F|16|G|17|H|I]]|9|@]|A|$]]|$1|N|3|O|5|6|7|18|8|@$F|19|G|1A|H|I]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1B|8|@$F|1C|G|1D|H|I]]|9|@]|A|$]]|$1|R|3|S|5|6|7|1E|8|@$F|1F|G|1G|H|I]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1H|8|@$F|1I|G|1J|H|I]]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|W|$]]

You say you want to measure "Page load times" which is completely different from

<ol>
<li>the time it takes to generate the page (as measured by an internal timer in your PHP code)</li>
<li>and offload it from the server (which is measured by ab)</li>
</ol>

A page load time should include the time taken to parse the HTML and to make subsequent requests to the server to fetch all related content (javascript files, css files, images etc).

Measuring this is actually quite difficult. To do it properly, you need to push all the logic client side - drop a timestamped javascript cookie when the user clicks on a link or submits a form, then in the subsequent page, using the onload method (which fires after everything has loaded) compared this time with the current time. You then need a method of reporting this metric back to the server - you can use an Ajax request, or store the time in another cookie to be presented in the subsequent request.

Note that the files required by each client will depend on the current state of the browser side cache.

If you can isolate click streams from your logs, then you can get a good approximation by checking the interval between a request for a text/html content type and the last consecutive request for content type other than text/html. But your stats will get skewed if users interact usnig more than one browser window simultaeneously.

blocks|key|223230|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|223231|方法一:使用xdebug.|ordered-list-item|223232|方法二:将这些语句放在脚本周围|223233|223234|$TIMER['label']=microtime(1);|offset|length|style|CODE|223235|/*+some+code+*/|223236|$TIMER['sql1_before']=microtime(1);|223237|a/*+some+code+*/|223238|$TIMER['sql1_after']=microtime(1);|223239|/*+some+code+*/+|223240|然后输出它，代码如下：|223241|++echo+"<table+border=1><tr><td>name</td><td>so+far</td><td>delta</td><td>per+cent</td></tr>";
++reset($TIMER);
++$start=$prev=current($TIMER);
++$total=end($TIMER)-$start;
++foreach($TIMER+as+$name+=>+$value)+{
++++$sofar=round($value-$start,3);
++++$delta=round($value-$prev,3);
++++$percent=round($delta/$total*100);
++++echo+"<tr><td>$name</td><td>$sofar</td><td>$delta</td><td>$percent</td></tr>";
++++$prev=$value;
++}
++++echo+"</table>";|code-block|syntax|javascript|223242|因此，你会得到关于你的代码运行情况的详细报告。此操作称为profiling，在优化过程中占据最重要的位置。|223243|entityMap^0|0|0|0|0|0|T|0|0|F|0|0|Z|0|0|G|0|0|Y|0|0|F|0|0|0|S|9|0^^$0|@$1|2|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|18|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|19|7|@]|8|@]|9|$]]|$1|F|3|-4|4|5|6|1A|7|@]|8|@]|9|$]]|$1|G|3|H|4|5|6|1B|7|@$I|1C|J|1D|K|L]]|8|@]|9|$]]|$1|M|3|N|4|5|6|1E|7|@$I|1F|J|1G|K|L]]|8|@]|9|$]]|$1|O|3|P|4|5|6|1H|7|@$I|1I|J|1J|K|L]]|8|@]|9|$]]|$1|Q|3|R|4|5|6|1K|7|@$I|1L|J|1M|K|L]]|8|@]|9|$]]|$1|S|3|T|4|5|6|1N|7|@$I|1O|J|1P|K|L]]|8|@]|9|$]]|$1|U|3|V|4|5|6|1Q|7|@$I|1R|J|1S|K|L]]|8|@]|9|$]]|$1|W|3|X|4|5|6|1T|7|@]|8|@]|9|$]]|$1|Y|3|Z|4|10|6|1U|7|@]|8|@]|9|$11|12]]|$1|13|3|14|4|5|6|1V|7|@$I|1W|J|1X|K|L]]|8|@]|9|$]]|$1|15|3|-4|4|5|6|1Y|7|@]|8|@]|9|$]]]|16|$]]

<ol>
<li>method one: use xdebug.</li>
<li>method two:
Put these statements all around your your scripts

<code>$TIMER['label']=microtime(1);</code> 
<code>/* some code */</code> 
<code>$TIMER['sql1_before']=microtime(1);</code> 
<code>a/* some code */</code> 
<code>$TIMER['sql1_after']=microtime(1);</code> 
<code>/* some code */</code> </li>
</ol>

and then output it, with code like this:

<pre><code> echo "&lt;table border=1&gt;&lt;tr&gt;&lt;td&gt;name&lt;/td&gt;&lt;td&gt;so far&lt;/td&gt;&lt;td&gt;delta&lt;/td&gt;&lt;td&gt;per cent&lt;/td&gt;&lt;/tr&gt;";
 reset($TIMER);
 $start=$prev=current($TIMER);
 $total=end($TIMER)-$start;
 foreach($TIMER as $name =&gt; $value) {
 $sofar=round($value-$start,3);
 $delta=round($value-$prev,3);
 $percent=round($delta/$total*100);
 echo "&lt;tr&gt;&lt;td&gt;$name&lt;/td&gt;&lt;td&gt;$sofar&lt;/td&gt;&lt;td&gt;$delta&lt;/td&gt;&lt;td&gt;$percent&lt;/td&gt;&lt;/tr&gt;";
 $prev=$value;
 }
 echo "&lt;/table&gt;";
</code></pre>

Thus, you'll get tetailed report on how your code goes.
this action called <code>profiling</code> and take most important place in the optimization process.

blocks|key|1408102|text|演示文稿中的输出似乎是从《围城》(http://www.joedog.org/index/siege-home)中抄袭过来的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1408103|另一个非常有用的“真实”性能测试工具是Firebug+(http://getfirebug.com/)和YSlow+(http://developer.yahoo.com/yslow/)。|1408104|entityMap|0|LINK|mutability|MUTABLE|url|http://www.joedog.org/index/siege-home|1|http://getfirebug.com/|2|http://developer.yahoo.com/yslow/^0|H|12|0|0|S|M|1|1N|X|2|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]|$A|Z|B|10|1|11]]|C|$]]|$1|F|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]]]

The Output in that presentation seem to be copied from Siege (<a href="http://www.joedog.org/index/siege-home" rel="nofollow noreferrer">http://www.joedog.org/index/siege-home</a>).

Another quite useful tool for "real world" performance testing your whole application stack is Firebug (<a href="http://getfirebug.com/" rel="nofollow noreferrer">http://getfirebug.com/</a>) and YSlow (<a href="http://developer.yahoo.com/yslow/" rel="nofollow noreferrer">http://developer.yahoo.com/yslow/</a>)

blocks|key|968750|text|使用microtime()+PHP函数，您将确切地知道执行PHP代码需要多长时间。按照以下步骤将PHP代码放到您的网页上：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|968751|将以下代码放在PHP页面的最顶端(如果您测量特定代码部分所需的时间，请将此代码放在PHP代码部分之前)|968752|<?php
$time+=+microtime();
$time+=+explode('+',+$time);
$time+=+$time[1]+%2B+$time[0];
$start+=+$time;
?>|code-block|syntax|javascript|968753|下面的代码必须放在网页的最后(或PHP代码部分的末尾)|968754|<?php
$time+=+microtime();
$time+=+explode('+',+$time);
$time+=+$time[1]+%2B+$time[0];
$finish+=+$time;
$total_time+=+round(($finish+-+$start),+4);
echo+'Page+generated+in+'.$total_time.'+seconds.';|968755|如果不起作用，请使用microtime(true)代替microtime()|968756|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Using microtime() PHP function you will know exactly how much time is needed for your PHP code to be executed. Follow the steps below to put the PHP code on your web page:

Put the following code at the very top of your PHP page (if you measure the time needed for particular part of the code put this right before that PHP code part)

<pre><code>&lt;?php
$time = microtime();
$time = explode(' ', $time);
$time = $time[1] + $time[0];
$start = $time;
?&gt;
</code></pre>

The following code has to be put at the very end of the web page (or the end of the PHP code part)

<pre><code>&lt;?php
$time = microtime();
$time = explode(' ', $time);
$time = $time[1] + $time[0];
$finish = $time;
$total_time = round(($finish - $start), 4);
echo 'Page generated in '.$total_time.' seconds.';
</code></pre>

If not works use microtime(true) instead of microtime()

blocks|key|968777|text|将以下代码放在PHP页面的顶部。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|968778|<?php
$statrttime+=+microtime();
$time+=+explode('+',+$statrttime);
$time+=+$time[1]+%2B+$time[0];
$start+=+$time;
?>|code-block|syntax|javascript|968779|下面的代码必须放在页面的末尾。|968780|<?php
$endtime+=+microtime();
$time+=+explode('+',+$endtime);
$time+=+$time[1]+%2B+$time[0];
$finish+=+$time;
$total_time+=+round(($finish+-+$start),+4);
echo+'Page+load+in+'.$total_time.'+seconds.';
?>|968781|注意:如果您测量代码的特定部分的时间，请将此PHP代码的开始和最后部分放在正确的位置。|968782|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Put the following code at the top of your PHP page.

<pre><code>&lt;?php
$statrttime = microtime();
$time = explode(' ', $statrttime);
$time = $time[1] + $time[0];
$start = $time;
?&gt;
</code></pre>

The following code has to be put at the end of your page. 

<pre><code>&lt;?php
$endtime = microtime();
$time = explode(' ', $endtime);
$time = $time[1] + $time[0];
$finish = $time;
$total_time = round(($finish - $start), 4);
echo 'Page load in '.$total_time.' seconds.';
?&gt;
</code></pre>

Note: If you measure the time for particular part of the code put this right start and last PHP code part.

How could I measure the time taken to load a page (with various different PHP statements)?

Somewhat like the stats available here - <a href="http://talks.php.net/show/drupal08/24" rel="noreferrer">http://talks.php.net/show/drupal08/24</a>

Benchmarking PHP page load times

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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如何测量加载页面所用的时间(使用各种不同的PHP语句)？有点像这里提供的统计数据- 

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