blocks|key|2584311|text|查看此处：http://php.net/manual/en/function.ignore-user-abort.php|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2584312|布尔整数ignore_user_abort+(+|2584313|+$value+)|blockquote|2584314|2584315|设置客户端断开连接是否应导致脚本中止。|2584316|当PHP作为命令行脚本运行时，如果脚本的tty消失而不会终止脚本，则脚本将在下次尝试写入任何内容时终止，除非将value设置为TRUE|2584317|2584318|还有一个同名的PHP配置选项：http://php.net/manual/en/misc.configuration.php|2584319|默认情况下，如果您什么也不做，根据PHP手册，默认情况下将中止脚本。http://php.net/manual/en/features.connection-handling.php|2584320|必要的更新|2584321|看起来我(在不知不觉中)骗到了“名誉点”，因为我没有提供(正确的)答案，但现在要感谢测试和来自“”的持续微调：|2584322|Quote：“好的，我看了一下PHP的源代码，如果我没有遗漏任何东西，我现在有了答案。"ignore_user_abort”标志只在PHP接收到试图输出给用户的错误时才会被检查。所以，在我的理解中，没有办法中断不产生任何输出的代码。“|2584323|好吧，我并不是完全错了，但重要的是要知道这一切都取决于你的脚本是否产生了任何输出！|2584324|如果你读了这篇文章，也一定要看看下面的评论。|2584325|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.ignore-user-abort.php|1|http://php.net/manual/en/misc.configuration.php|2|http://php.net/manual/en/features.connection-handling.php|3|http://forums.devnetwork.net/viewtopic.php?p=371893^0|5|1J|0|0|0|0|0|0|0|0|F|1B|1|0|Y|1L|2|0|0|0|0|5|3|0|0|0^^$0|@$1|2|3|4|5|6|7|1G|8|@]|9|@$A|1H|B|1I|1|1J]]|C|$]]|$1|D|3|E|5|6|7|1K|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1L|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|1M|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|1N|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1O|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]|$1|O|3|P|5|6|7|1Q|8|@]|9|@$A|1R|B|1S|1|1T]]|C|$]]|$1|Q|3|R|5|6|7|1U|8|@]|9|@$A|1V|B|1W|1|1X]]|C|$]]|$1|S|3|T|5|6|7|1Y|8|@]|9|@]|C|$]]|$1|U|3|V|5|6|7|1Z|8|@]|9|@]|C|$]]|$1|W|3|X|5|6|7|20|8|@]|9|@$A|21|B|22|1|23]]|C|$]]|$1|Y|3|Z|5|6|7|24|8|@]|9|@]|C|$]]|$1|10|3|11|5|6|7|25|8|@]|9|@]|C|$]]|$1|12|3|-4|5|6|7|26|8|@]|9|@]|C|$]]]|13|$14|$5|15|16|17|C|$18|19]]|1A|$5|15|16|17|C|$18|1B]]|1C|$5|15|16|17|C|$18|1D]]|1E|$5|15|16|17|C|$18|1F]]]]

See here:
<a href="http://php.net/manual/en/function.ignore-user-abort.php" rel="nofollow noreferrer">http://php.net/manual/en/function.ignore-user-abort.php</a>

<blockquote>
<pre><code>int ignore_user_abort ([ bool $value ] )
</code></pre>
 
 Sets whether a client disconnect should cause a script to be aborted.
 
 When running PHP as a command line script, and the script's tty goes away without the script being terminated then the script will die the next time it tries to write anything, unless value is set to TRUE
</blockquote>

There also is a PHP configuration option of the same name:
<a href="http://php.net/manual/en/misc.configuration.php" rel="nofollow noreferrer">http://php.net/manual/en/misc.configuration.php</a>

By default, if you do nothing, according to the PHP manual the default is to abort the script.
<a href="http://php.net/manual/en/features.connection-handling.php" rel="nofollow noreferrer">http://php.net/manual/en/features.connection-handling.php</a>

NECESSARY UPDATE

It seems I (unknowingly) tricked my way to "reputation points", because I did NOT supply the (correct) answer, but here it is now thanks to testing and continued nudging from "<a href="https://stackoverflow.com/users/116614/mellamokb">mellamokb</a>":

<a href="http://forums.devnetwork.net/viewtopic.php?p=371893" rel="nofollow noreferrer">Quote</a>:
"Ok, I took a look at the PHP source code and, if I didn't miss anything, I now have the answer. The "ignore_user_abort" flag is only checked when PHP receive an error trying to output something to the user. So, in my understanding, there is no way to interrupt code which doesn't produce any output."

Okay, I wasn't totally off, but it is important to know that it all depends on whether or not your script produced any output!

If you read THIS, also DO check out the comments below.

blocks|key|2584351|text|默认情况下为no。请参阅Connection+Handling文档，特别是：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2584352|2584353|您可以决定是否希望客户端断开连接以使脚本中止。有时，即使没有远程浏览器接收输出，总是让脚本运行到完成也是很方便的。但是，默认行为是在远程客户端断开连接时中止脚本。|blockquote|2584354|2584355|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/features.connection-handling.php^0|C|J|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|V|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

By default no. See <a href="http://php.net/manual/en/features.connection-handling.php" rel="nofollow">Connection Handling</a> documentation, especially:

<blockquote>
 You can decide whether or not you want
 a client disconnect to cause your
 script to be aborted. Sometimes it is
 handy to always have your scripts run
 to completion even if there is no
 remote browser receiving the output.
 The default behaviour is however for
 your script to be aborted when the
 remote client disconnects.
</blockquote>

blocks|key|681938|text|从我对这些东西工作原理的一点理解开始。从HTTP协议的角度来看，我会说是，脚本将继续运行，因为浏览器只是向服务器发送请求页面的请求，然后服务器开始执行脚本，并且不会从浏览器发送或接收信息，直到脚本完成加载和生成html输出，然后服务器将结果输出发送到浏览器并完成工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|681939|看，浏览器没有办法“告诉”服务器用户不再通过HTTP协议查看页面了。然而，HTTP协议通过流套接字运行在TCP连接之上，TCP连接一直保持活动状态，直到其中一端选择中止连接(或达到一定的超时)，现在我真的不知道浏览器是如何处理这个问题的。浏览器只需打开一个连接，发送一个请求并关闭连接，然后服务器等待脚本并在另一个连接上发送响应。或者浏览器可以打开一个连接，使此连接保持活动状态，直到服务器对同一连接做出响应。如果事情是这样工作的，那么服务器就真的有办法知道用户是否不再查看页面了，只需检查连接是否仍然有效或已被客户端关闭。所以这是不可能的。|681940|我不太清楚这一点。|681941|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

From my little understanding of how these stuff works. By the point of view of the HTTP protocol I would say yes, the script would keep running, because the browser just sends a request to the server asking for the page, then the server starts executing the script and does not sends or receives information from the browser untill the script is done loading and producing the html output, and just then the server sends the resulting output to the browser and has done the job.

See, there is no way for a browser to "tell" the server that the user is not viewing the page anymore through the HTTP protocol. However, the HTTP protocol runs on top of the TCP connection through stream sockets, the TCP connection is kept alive till one of the ends choses to abort the connection (or a certain timeout is reached), now I really don't know how the browser handles this. The browser could just open a connection, send a request and close the connection, then the server waits for the script and sends the response on another connection. Or the browser could open a connection, KEEP this connection alive till the server responds on the same connection. If the thing works that way then the server would really have a way to know if the user is not viewing the page anymore simply by checking if the connection is still alive or has been shutdown by the client. So that would be a no.

Dunno much about that tho.

blocks|key|2584428|text|在以下情况之前，通过web服务器运行的PHP脚本不会停止：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2584429|2584430|有人杀死服务器|unordered-list-item|2584431|服务器杀死php+scrip|2584432|2584433|当用户中止脚本时，PHP将继续运行，直到它尝试将某些内容发送回浏览器。|2584434|例如，即使用户中止，静态脚本也将继续执行：|2584435|while(true){
++++echo+'go'.PHP_EOL;
}|code-block|syntax|javascript|2584436|它将永远持续下去，因为"echo“将写入缓冲区，直到脚本结束，缓冲区才会被发送到浏览器，而这永远不会发生。|2584437|一旦用户中止，以下脚本将立即停止：|2584438|while(true){
++++echo+'go'.PHP_EOL;
++++flush();
++++ob_flush();
}|2584439|该脚本将停止，因为flush()和ob_flush()将强制PHP将其缓冲区发送到浏览器，这将在用户中止时停止PHP脚本。在这种情况下，函数ignore-user-+abort+()将强制PHP忽略abort。|2584440|此外，如果您使用的是PHP会话，这是另一个棘手的情况。例如，如果您正在进行AJAX，并且您实际上向一个PHP脚本发送了两个AJAX请求，并且该脚本需要与session_start()进行会话。第一个AJAX查询将正常工作，但是第二个查询必须等到第一个调用完成，因为第一个脚本锁定了会话。第一个脚本最终可能过早地释放session_write_close()会话；|2584441|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|15|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|16|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|18|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|19|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|1A|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|1B|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1C|8|@]|9|@]|A|$]]|$1|V|3|W|5|O|7|1D|8|@]|9|@]|A|$P|Q]]|$1|X|3|Y|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1F|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|12|$]]

A PHP Script running through a web server will not stop until:

<ul>
<li>someone kill the server</li>
<li>the server kill the php scrip</li>
</ul>

When the user abort the script, PHP will continue until it try to send something back to the browser.

For example still script will continue fore ever even if the user abort:

<pre><code>while(true){
 echo 'go'.PHP_EOL;
}
</code></pre>

It will go on forever because the "echo", will write into the buffer, and the buffer will not be sent to the browser until the script finish, which will never happen.

The following script will stop as soon as the user abort:

<pre><code>while(true){
 echo 'go'.PHP_EOL;
 flush();
 ob_flush();
}
</code></pre>

This script will stop, because flush() and ob_flush() will force PHP to send its buffer to the browser, which will stop the PHP script if the user has aborted.
The function ignore-user-abort() will force PHP to ignore the abort in this case.

Moreover if you are using PHP session, they are another tricky situation.
For example, if you are doing AJAX, and you actually send two AJAX request to a PHP script and that PHP script has need of session with session_start().
The first AJAX query will work normally, however the second one will have to wait until the first call is finish, because the first script has a locked on the session.
The first script could eventually prematurely release the session with session_write_close();

blocks|key|2584487|text|脚本将运行max_execution_time设置的时间(默认为30秒)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2584488|2584489|+警告当PHP在安全模式下运行时，此函数无效。除了在php.ini中关闭安全模式或更改时间限制之外，没有其他解决方法。注意：set_time_limit()函数和配置指令max_execution_time只影响脚本本身的执行时间。在确定脚本运行的最大时间时，不包括在脚本执行之外发生的活动上花费的任何时间，例如使用system()的系统调用、流操作、数据库查询等。在Windows上不是这样的，因为测量的时间是真实的。来自+的报价|blockquote|offset|length|style|BOLD|2584490|2584491|2584492|您可以通过运行以下命令对其进行测试|2584493|<?php+
unlink('cocorico.txt');+
while(true){+
++++file_put_contents('cocorico.txt',+microtime(true).PHP_EOL,+FILE_APPEND);+
}+|code-block|syntax|javascript|2584494|它会在30秒后停止(不管你是否关闭浏览器)，你可以通过echo+ini_get('max_execution_time');获得默认的执行时间，并可以像set_time_limit(3);一样进行设置。标记为接受的答案只对ignore_user_abort是正确的，但不要担心如果你不将最大执行时间设置为0-无限，你的“失败”脚本将永远运行；|CODE|2584495|entityMap^0|0|0|1|2|1N|2|5Y|2|0|0|0|0|H|0|0|0|4R|R|Z|24|I|33|H|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]|$F|12|G|13|H|I]|$F|14|G|15|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|18|8|@$F|19|G|1A|H|I]]|9|@]|A|$]]|$1|N|3|O|5|P|7|1B|8|@]|9|@]|A|$Q|R]]|$1|S|3|T|5|6|7|1C|8|@$F|1D|G|1E|H|I]|$F|1F|G|1G|H|U]|$F|1H|G|1I|H|U]|$F|1J|G|1K|H|U]]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|W|$]]

The script will run the time set by max_execution_time (default is 30s)

<blockquote>
 Warning This function has no effect when PHP is running in safe mode.
 There is no workaround other than turning off safe mode or changing
 the time limit in the php.ini. 
 Note: The set_time_limit() function and
 the configuration directive max_execution_time only affect the
 execution time of the script itself. Any time spent on activity that
 happens outside the execution of the script such as system calls using
 system(), stream operations, database queries, etc. is not included
 when determining the maximum time that the script has been running.
 This is not true on Windows where the measured time is real.
 quote from <a href="http://php.net/manual/en/function.set-time-limit.php" rel="nofollow">http://php.net/manual/en/function.set-time-limit.php</a>
</blockquote>

you can test this by running

<pre><code>&lt;?php 
unlink('cocorico.txt'); 
while(true){ 
 file_put_contents('cocorico.txt', microtime(true).PHP_EOL, FILE_APPEND); 
} 
</code></pre>

and it will stop after 30s (despite you close your browser or not) 
you can get you default exec time by <code>echo ini_get('max_execution_time');</code> and can be set like <code>set_time_limit(3);</code>
The answer marked as accepted is only correct about the <code>ignore_user_abort</code> but don't panic that your "fail" scripts will run forever if you don't set max exec time to 0 - unlimited;

if i call a php file via jquery ajax, that contains a script to do some stuff that takes a while — for instance uploading a big video — and then I close the page: does the php script keep loading the video or not?

Will a script continue to run even after closing a page?

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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如果我通过jquery ajax调用一个php文件，其中包含一个脚本来做一些需要一段时间的事情，比如上传一个大的视频，然后我关闭页面: php脚本是否继续加载视频？

问即使在关闭页面后，脚本也会继续运行吗？
EN

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问即使在关闭页面后，脚本也会继续运行吗？EN