blocks|key|3007830|text|如果只想为用户运行一次，我会设置一个会话cookie，然后使用if()语句。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3007831|<?php
session_start();

if+(!$_SESSION['loaded'])
{
++++//+insert+query+here
}

$_SESSION['loaded']+=+true;

?>|code-block|syntax|javascript|3007832|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 just want to run it once for a user, I would set a session cookie and then use an if() statement.

<pre><code>&lt;?php
session_start();

if (!$_SESSION['loaded'])
{
 // insert query here
}

$_SESSION['loaded'] = true;

?&gt;
</code></pre>

blocks|key|3222043|text|您不能直接检测页面刷新，但您可以使用cookie来模拟您想要的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222044|if+(isset($_COOKIE['action']))+{
++//+action+already+done
}+else+{
++setcookie('action');
++//+run+query
}|code-block|syntax|javascript|3222045|根据您的要求，您还需要决定何时删除cookie和/或再次执行该操作。|3222046|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|$]]

You can't directly detect a page refresh, but you can use a cookie to simulate what you want:

<pre><code>if (isset($_COOKIE['action'])) {
 // action already done
} else {
 setcookie('action');
 // run query
}
</code></pre>

Depending on your requirements, you also need to decide when to remove the cookie and/or perform the action again.

blocks|key|289575|text|您可以保存将与当前页面关联的cookie，如果单击了任何链接，则使用新页面名称更新cookie。假设以上操作是在Javascript中完成的，您可以将此updateCookie信息发送到服务器以通知新的页面命中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|289576|或者另一种方法是，您可以指定一个+HEADER，它指定缓存在页面上的过期多长时间后，浏览器甚至不会向您发送有关页面加载/刷新的请求。|289577|有关缓存的信息，请参阅http://www.mnot.net/cache_docs/#IMP-SCRIPT|289578|此外，请查看HTTP+-+ETag+vs+Header+Expires中的Etag+vs+Expires|289579|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mnot.net/cache_docs/#IMP-SCRIPT|1|https://stackoverflow.com/questions/499966/etag-vs-header-expires/500103#500103^0|1K|A|0|G|7|R|7|1J|7|0|B|16|0|0|D|M|1|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@$9|16|A|17|1|18]]|E|$]]|$1|J|3|K|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|L|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]|T|$5|O|P|Q|E|$R|U]]]]

You can save a cookie that will be associated with the present page and if any link is clicked, update the cookie with the new page name. 
Assuming the above is done in Javascript, you can send this updateCookie information to the server to notify about a new page hit. 

Or another approach could be, you can specify a HTTP HEADER that specifies after how much time the cache expires on a page and that way, the browser wont even send you a request about page load/refresh. 

See <a href="http://www.mnot.net/cache_docs/#IMP-SCRIPT" rel="nofollow noreferrer">http://www.mnot.net/cache_docs/#IMP-SCRIPT</a> for information about CACHING 

Also , check out Etag vs Expires in HTTP - <a href="https://stackoverflow.com/questions/499966/etag-vs-header-expires/500103#500103">ETag vs Header Expires</a>

blocks|key|3008045|text|我已经解决了这个问题。没有会话和cookie的HURRAHHH|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3008046|这个解决方案是PHP+:+AJAX+:+JavaScript的组合|3008047|您希望在Page+Load而不是page+Refresh上运行的查询通过AJAX调用运行它，假设我的函数是|3008048|function+runQUERY()
{
++++xmlhttp=new+XMLHttpRequest();
++++xmlhttp.open("POST","doIT.php",false);
++++xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
++++xmlhttp.send();
}|code-block|syntax|javascript|3008049|通过执行以下操作，我可以简单地使用Javascript检查页面是新加载的还是刷新的|3008050|<head>
<script+type="text/javascript">
function+checkRefresh()
{
++++if(+document.refreshForm.visited.value+==+""+)
++++{+++++++++++
++++++++//+This+is+a+fresh+page+load
++++++++++++alert+(+'Fresh+Load'+);
++++++++document.refreshForm.visited.value+=+"1";
++++++++++++..call+you+AJAX+function+here
++++}
++++else
++++{
++++++++//+This+is+a+page+refresh
++++++++alert+(+'Page+has+been+Refreshed,+The+AJAX+call+was+not+made');

++++}
}
</script>++++
</head>

<body+onLoad="checkRefresh()">

<form+name="refreshForm">
<input+type="hidden"+name="visited"+value=""+/>
</form>

</body>
</html>|3008051|在您的doIT.php中，简单地添加您要放入普通页面的PHP代码。|offset|length|style|BOLD|3008052|<?php
mysql_query("UPDATE---------");
//put+any+code+here,+i+won't+run+on+any+page+refresh
?>|3008053|entityMap^0|0|0|0|0|0|0|3|8|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|14|8|@$Q|15|R|16|S|T]]|9|@]|A|$]]|$1|U|3|V|5|H|7|17|8|@]|9|@]|A|$I|J]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

i have solved the problem ... HURRAHHH with no session &amp; no cookies

the solution is a combination of PHP : AJAX : JavaScript

the query that you want to run on Page Load &amp; not on page Refresh run it as via AJAX call lets say my function for doing that is 

<pre><code>function runQUERY()
{
 xmlhttp=new XMLHttpRequest();
 xmlhttp.open("POST","doIT.php",false);
 xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
 xmlhttp.send();
}
</code></pre>

and i can simply check with Javascript that the page is a fresh load or its a refresh by doing the following

<pre><code>&lt;head&gt;
&lt;script type="text/javascript"&gt;
function checkRefresh()
{
 if( document.refreshForm.visited.value == "" )
 { 
 // This is a fresh page load
 alert ( 'Fresh Load' );
 document.refreshForm.visited.value = "1";
 ..call you AJAX function here
 }
 else
 {
 // This is a page refresh
 alert ( 'Page has been Refreshed, The AJAX call was not made');

 }
}
&lt;/script&gt; 
&lt;/head&gt;

&lt;body onLoad="checkRefresh()"&gt;

&lt;form name="refreshForm"&gt;
&lt;input type="hidden" name="visited" value="" /&gt;
&lt;/form&gt;

&lt;/body&gt;
&lt;/html&gt;
</code></pre>

and in your doIT.php simple add your PHP code which you were going to put in the normal page

<pre><code>&lt;?php
mysql_query("UPDATE---------");
//put any code here, i won't run on any page refresh
?&gt;
</code></pre>

blocks|key|287814|text|++++//here+you+get+the+url+behind+the+domain.
++++$currentPage+=+$_SERVER['REQUEST_URI'];+

++++//if+the+session+current+page+is+not+set.
++++if(!isset($_SESSION['currentPage'])){+

++++++//set+the+session+to+the+current+page.
++++++$_SESSION['currentPage']+=+$currentPage;+++++
++++}

++++//check+if+the+session+is+not+equal+to+the+current+page
++++if($_SESSION['currentPage']+!=+$currentPage){

+++++++//+if+it's+not+equal+you+set+the+session+again+to+the+current+page.
+++++++$_SESSION['currentPage']+=+$currentPage;

+++++++//set+the+query+you+want+to+use
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|287815|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> //here you get the url behind the domain.
 $currentPage = $_SERVER['REQUEST_URI']; 

 //if the session current page is not set.
 if(!isset($_SESSION['currentPage'])){ 

 //set the session to the current page.
 $_SESSION['currentPage'] = $currentPage; 
 }

 //check if the session is not equal to the current page
 if($_SESSION['currentPage'] != $currentPage){

 // if it's not equal you set the session again to the current page.
 $_SESSION['currentPage'] = $currentPage;

 //set the query you want to use
 }
</code></pre>

blocks|key|292853|text|我找到了这个here片段，它非常适合我：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|292854|$pageWasRefreshed+=+isset($_SERVER['HTTP_CACHE_CONTROL'])+&&+$_SERVER['HTTP_CACHE_CONTROL']+===+'max-age=0';

if($pageWasRefreshed+)+{
+++//do+something+because+page+was+refreshed;
}+else+{
+++//do+nothing;
}|code-block|syntax|javascript|292855|entityMap|0|LINK|mutability|MUTABLE|url|http://www.yourhowto.net/detect-page-refresh-php/^0|6|4|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

I found this snippet <a href="http://www.yourhowto.net/detect-page-refresh-php/" rel="noreferrer">here</a>, and it worked perfectly for me:

<pre><code>$pageWasRefreshed = isset($_SERVER['HTTP_CACHE_CONTROL']) &amp;&amp; $_SERVER['HTTP_CACHE_CONTROL'] === 'max-age=0';

if($pageWasRefreshed ) {
 //do something because page was refreshed;
} else {
 //do nothing;
}
</code></pre>

blocks|key|3222252|text|这可以在您的场景中工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222253|if(isset($_GET["token"]))+{
++++$view_token+=+$_GET["token"];
}+else+{
++++$new_views+=+$views+%2B+1;
++++//+UPDATE+VIEWS
++++$view_token+=+substr(str_shuffle(str_repeat("0123456789abcdefghijklmnopqrstuvwxyz",+5)),+0,+5);
++++header("Location:+?token=$view_token");
}|code-block|syntax|javascript|3222254|如果用户在URL中有令牌，则不会更新视图计数。因此，如果用户尝试刷新，它将不会更新视图计数。当用户在URL中没有令牌时，视图计数将更新并使用令牌刷新页面。它的思维跳出了框框，但它是有效的！|3222255|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 can work in your scenario:

<pre><code>if(isset($_GET["token"])) {
 $view_token = $_GET["token"];
} else {
 $new_views = $views + 1;
 // UPDATE VIEWS
 $view_token = substr(str_shuffle(str_repeat("0123456789abcdefghijklmnopqrstuvwxyz", 5)), 0, 5);
 header("Location: ?token=$view_token");
}
</code></pre>

If the user has a token in the URL, the view count will not update. Therefore, if the user tries to refresh, it will not update the view count. When the user does not have a token in the URL, the view count updates and refreshes the page WITH a token. It is thinking outside of the box but it works!

blocks|key|3008139|text|if(+$_SERVER['HTTP_CACHE_CONTROL']+==+'max-age=0')
{
++++$_SESSION['status']+=+null; 
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3008140|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>if( $_SERVER['HTTP_CACHE_CONTROL'] == 'max-age=0')
{
 $_SESSION['status'] = null;&lt;br&gt;
}
</code></pre>

I have a page <code>action.php</code> on which I run an SQL query through the code, so that whenever the page is viewed the query runs like its like counting page views

<pre><code>&lt;?php
mysqli_query("UPDATE ****");
?&gt;
</code></pre>

The problem is when the page is refreshed, the query is run &amp; PAGE REFRESH is counted as a PAGE VIEW which I want to avoid.

&nbsp;&nbsp;&nbsp;Question: How to avoid it ?

What I am looking for is a simple solution so that I can check 

<pre><code>if( page was refresh ) //some condition
{
 do
}
</code></pre>

PHP: Detect Page Refresh

服务器

我有一个页面action.php，我在这个页面上通过代码运行SQL查询，这样每当查看页面时，查询就像一样运行，就像计算页面浏览量一样。<?phpmysqli_query("UPDATE ****");?>问题是，当页面被刷新时，查询就会运行&页面刷新被算作页面视图，这是我想要避免的。一个问题：如何避免它？我正在寻找的是...

问PHP:检测页面刷新
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