blocks|key|728218|text|您有错误报告关闭，并收到一个致命错误，这就是为什么您看不到任何东西。内联变量不能像你做的那样使用，所以试着用下面的代码替换你的echo：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|728219|echo+"Name:+".$_REQUEST['name']."";|code-block|syntax|javascript|728220|或者这样：|728221|echo+"Name:+{$_REQUEST['name']}";|728222|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You have error reporting off and you are receiving a fatal error, which is why you are not seeing anything. Inline variables can't be used the way you do it so try replacing your echo with this:

<pre><code>echo "&lt;p&gt;Name: ".$_REQUEST['name']."&lt;p&gt;";
</code></pre>

or this:

<pre><code>echo "&lt;p&gt;Name: {$_REQUEST['name']}&lt;p&gt;";
</code></pre>

blocks|key|728332|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|728333|echo+"Name:+"+.+$_REQUEST['name']+.+"";|code-block|syntax|javascript|728334|您也可以启用错误报告，以避免类似的情况。您可以在php.ini文件中或在页面顶部执行此操作:+error_reporting(-1)。|728335|http://php.net/manual/en/function.error-reporting.php|offset|length|728336|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|1H|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@]|9|@$K|X|L|Y|1|Z]]|A|$]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|J]]]]

Try with this:

<pre><code>echo "&lt;p&gt;Name: " . $_REQUEST['name'] . "&lt;p&gt;";
</code></pre>

You may also enable the error report in order to avoid situations like this. You can do this in the php.ini file or at the top of you PHP page: error_reporting(-1).

<a href="http://php.net/manual/en/function.error-reporting.php">http://php.net/manual/en/function.error-reporting.php</a>

blocks|key|728415|text|您应该将您的代码更改为：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|728416|echo+"Name:+{$_REQUEST['name']}";|code-block|syntax|javascript|728417|您应该看看PHP+Manual+string+page上的“复杂卷曲语法”部分。|offset|length|728418|你应该读一读如何使用enable+error+reporting。|728419|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/language.types.string.php|1|http://php.net/manual/en/function.error-reporting.php^0|0|0|5|M|0|0|A|M|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]]]

You should change your code to this:

<pre><code>echo "&lt;p&gt;Name: {$_REQUEST['name']}&lt;p&gt;";
</code></pre>

You should take a look at the "complex curly syntax" section on the <a href="http://php.net/manual/en/language.types.string.php" rel="nofollow">PHP Manual string page</a>.

And you should read how to <a href="http://php.net/manual/en/function.error-reporting.php" rel="nofollow">enable error reporting</a>.

blocks|key|728433|text|echo+"Name:+$_REQUEST[name]";|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|728434|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 "&lt;p&gt;Name: $_REQUEST[name]&lt;p&gt;";
</code></pre>

blocks|key|512061|text|如果你想回显一个数组变量，你需要像这样“转义”它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|512062|<?php
++++echo+"Name:+{$_REQUEST['name']}";
?>|code-block|syntax|javascript|512063|另一种解决方案是：|512064|<?php
++++echo+'Name:+'.$_REQUEST['name'].'';
?>|512065|使用'查找字符串与使用"查找字符串之间的差异|offset|length|style|CODE|512066|entityMap^0|0|0|0|0|2|1|B|1|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

If you want to echo an array-variable you need to kind of "escape" it like so:

<pre><code>&lt;?php
 echo "&lt;p&gt;Name: {$_REQUEST['name']}&lt;p&gt;";
?&gt;
</code></pre>

Another solution is this:

<pre><code>&lt;?php
 echo '&lt;p&gt;Name: '.$_REQUEST['name'].'&lt;p&gt;';
?&gt;
</code></pre>

Look up the diffrences between strings with <code>'</code> and strings with <code>"</code>

blocks|key|512310|text|我猜你的脚本抛出了一个语法错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|512311|尝试替换此行|512312|echo+"Name:+$_REQUEST['name']";|code-block|syntax|javascript|512313|使用|512314|echo+"Name:+{$_REQUEST['name']}";|512315|有关单引号和双引号字符串如何工作的信息，请参阅echo手册。|offset|length|512316|一般来说，在开发站点上启用错误报告通常是一个好主意，这样页面就会像这样显示错误，而不仅仅是“抛出一个白色的东西”。如果这样做，请确保在生产站点上禁用了错误显示(尽管您可能仍然希望记录错误)。|512317|entityMap|0|LINK|mutability|MUTABLE|url|http://uk3.php.net/manual/en/function.echo.php^0|0|0|0|0|0|N|4|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|15|8|@]|9|@$O|16|P|17|1|18]]|A|$]]|$1|Q|3|R|5|6|7|19|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

I would guess your script is throwing a syntax error.

Try replacing this line

<pre><code>echo "&lt;p&gt;Name: $_REQUEST['name']&lt;p&gt;";
</code></pre>

with

<pre><code>echo "&lt;p&gt;Name: {$_REQUEST['name']}&lt;p&gt;";
</code></pre>

See the manual for <a href="http://uk3.php.net/manual/en/function.echo.php" rel="nofollow">echo</a> for info on how single- and double-quoted strings work.

In general, it's often a good idea on development sites to enable error reporting so the page displays errors like this rather than just "throwing a whitey". Make sure if you do, that displaying errors is disabled on production sites (although you might want to log errors still).

blocks|key|728827|text|可能发生的情况是，你得到了一个致命的错误，但是error_reporting一节中的php.ini配置忽略了它，这就是为什么你会得到一个白色页面。将其更改为E_ALL或类似的内容，以使开发更容易！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|728828|一旦你有一个明确的错误，如果它还没有解决，请在这里发布它。|728829|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

What is probably happening is that you get a fatal error but the configuration of your php.ini in the section error_reporting just ignore it, this is why you get a white page. Change it to E_ALL or something like that to have an easier development!

Once you have an explicit error, if it is not still solved, post it here.

blocks|key|728241|text|replace+this+
echo+"Name:+$_REQUEST['name']";

to+

echo+"Name:+$_REQUEST[name]";|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|728242|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>replace this 
echo "&lt;p&gt;Name: $_REQUEST['name']&lt;p&gt;";

to 

echo "&lt;p&gt;Name: $_REQUEST[name]&lt;p&gt;";
</code></pre>

I just got started with php. I have a form in a web page that directs to handle.php, like this:

<pre><code>&lt;form action = "handle.php" method="post"&gt;
 &lt;p&gt;&lt;b&gt;name:&lt;/b&gt; &lt;input type = "text" name = "name" size="20"/&gt;&lt;p&gt;
 &lt;input type="submit" name="submit" value="submit my info"&gt;
&lt;/form&gt;
</code></pre>

In my <code>handle.php</code>, this is what I have:

<pre><code>&lt;!DOCTYPE HTML&gt;
&lt;html&gt;
 &lt;head&gt;
 &lt;title&gt; Hello! &lt;/title&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;?php
 echo "&lt;p&gt;Name: $_REQUEST['name']&lt;p&gt;";
 ?&gt;
 &lt;p&gt; Hi&lt;/p&gt;
 &lt;/body&gt;
&lt;/html&gt;
</code></pre>

This page appears completely empty. Interestingly, if I remove <code>$_REQUEST['name']</code>, then everything is fine. Seems to me that calling <code>$_REQUEST</code> makes the page empty (i check the source code and theres nothing there).

What am I doing wrong? thanks.

php empty page when using $_REQUEST

我刚刚开始使用php。我在网页中有一个指向handle.php的表单，如下所示：<form action = "handle.php" method="post"> name: <input type = "text" name = "name" size="20"/> <input type="submit" name="submit" value="sub

问使用$_REQUEST时的php空页
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