PHP的echo-ING内容页面加载 [英] PHP echo-ing content as page loads
问题描述
所以,我做了一些与PHP / Apache的实验。
比方说,我有这个code。
So I'm doing some experimenting with PHP/Apache. Let's say I have this code.
<div>DIV 1</div>
<?php sleep(2); ?>
<div>DIV 2</div>
<?php sleep(2); ?>
<div>DIV 3</div>
<?php sleep(2); ?>
<div>DIV 4</div>
<?php sleep(2); ?>
有关我的本地Apache网络服务器因故所有的数据出现在浏览器的一次,全部4睡眠()■已执行后(8秒)。
For some reason on my local apache webserver all the data appears in the browser at once, after all 4 sleep()s have been executed (8 seconds).
但是,如果我在我的主机的服务器上运行,数据是回声版实时浏览器。
作为... DIV1出现,2秒后格2出现等。
However if I run it on my host's server, the data is echo-ed to the browser in real time. As in... div1 appears, after 2 seconds div 2 appears etc.
这是为什么?这是Apache的一些设置?
Why is that? Is this some setting in Apache?
推荐答案
没有它可能是在PHP的设置。
No it may be a setting in php.
在你的本地服务器,output_buffering你的php.ini文件中启用。
In you local server, output_buffering is enabled in your php.ini file.
您可以通过设置将其禁用:
You can disable it by setting :
output_buffering = off
要确保内容是使用回声般的语句每次发送到浏览器中,添加:
To Ensure that the content is sent to the browser each time a echo-like statement is used, add :
implicit_flush = on
您还可以通过给output_buffering的值设置缓冲区的大小。
You also can set the buffer size by giving output_buffering a value.
output_buffering = 4096
在这里缓冲区大小是4KB。
here the buffer size would be 4KB.
输出缓冲告诉PHP将保存在内存中的所有数据将被发送到浏览器,直到它在你的code encouters冲洗()指令,缓冲区恰好是满,或者是脚本的结尾。
Output buffering tells php to keep in memory all data to be sent to the browser until it encouters a flush() instruction in your code, the buffer happens to be full, or it is the end of the script.
下面是从php.net输出缓冲器充分借鉴: PHP的输出缓冲
Here is the full reference for output buffer from php.net : php output buffer
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