blocks|key|1294149|text|像这样尝试(heredoc语法)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1294150|$variable+=+<<<XYZ
<html>
<body>

</body>
</html>
XYZ;
echo+$variable;|code-block|syntax|javascript|1294151|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/Here_document#PHP^0|6|7|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]]]]

Try it like this (<a href="https://en.wikipedia.org/wiki/Here_document#PHP" rel="nofollow noreferrer">heredoc</a> syntax):
<pre><code>$variable = &lt;&lt;&lt;XYZ
&lt;html&gt;
&lt;body&gt;

&lt;/body&gt;
&lt;/html&gt;
XYZ;
echo $variable;
</code></pre>

blocks|key|1294111|text|你可以使用alternative+syntax+alternative+syntax+for+control+structures并突破PHP：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1294112|<?php+if+($something):+?>
++++<some+/>+<tags+/>+<etc+/>
++++<?=$shortButControversialWayOfPrintingAVariable+?>
++++<?php+/*+A+comment+not+visible+in+the+HTML,+but+it+is+a+bit+of+a+pain+to+write+*/+?>
<?php+else:+?>
++++
<?php+endif;+?>|code-block|syntax|javascript|1294113|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/control-structures.alternative-syntax.php^0|5|1O|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]]]]

You could use the <a href="http://php.net/manual/en/control-structures.alternative-syntax.php" rel="nofollow noreferrer">alternative syntax alternative syntax for control structures</a> and break out of PHP:
<pre><code>&lt;?php if ($something): ?&gt;
 &lt;some /&gt; &lt;tags /&gt; &lt;etc /&gt;
 &lt;?=$shortButControversialWayOfPrintingAVariable ?&gt;
 &lt;?php /* A comment not visible in the HTML, but it is a bit of a pain to write */ ?&gt;
&lt;?php else: ?&gt;
 &lt;!-- else --&gt;
&lt;?php endif; ?&gt;
</code></pre>

blocks|key|1294267|text|基本上，您可以将HTML放在PHP标记之外的任何位置。在显示任何数据之前进行所有必要的数据处理，以便将逻辑和表示分开，这也是非常有益的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1294268|数据显示本身可以位于同一PHP文件的底部，也可以包括一个主要由HTML组成的单独PHP文件。|1294269|我更喜欢这种紧凑的风格：|1294270|<?php
++++/*+do+your+processing+here+*/
?>

<html>
<head>
++++<title><?=$title?></title>
</head>
<body>
++++<?php+foreach+(+$something+as+$item+)+:+?>
++++++++<?=$item?>
++++<?php+endforeach;+?>
</body>
</html>|code-block|syntax|javascript|1294271|注意:您可能需要使用<?php+echo+$var;+?>而不是<?=$var?>，这取决于您的PHP设置。|offset|length|style|CODE|1294272|entityMap^0|0|0|0|0|A|J|W|9|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|W|8|@$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|$]]

Basically you can put HTML anywhere outside of PHP tags. It's also very beneficial to do all your necessary data processing before displaying any data, in order to separate logic and presentation.

The data display itself could be at the bottom of the same PHP file or you could include a separate PHP file consisting of mostly HTML.

I prefer this compact style:

<pre><code>&lt;?php
 /* do your processing here */
?&gt;

&lt;html&gt;
&lt;head&gt;
 &lt;title&gt;&lt;?=$title?&gt;&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
 &lt;?php foreach ( $something as $item ) : ?&gt;
 &lt;p&gt;&lt;?=$item?&gt;&lt;/p&gt;
 &lt;?php endforeach; ?&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

Note: you may need to use <code>&lt;?php echo $var; ?&gt;</code> instead of <code>&lt;?=$var?&gt;</code> depending on your PHP setup.

blocks|key|1294211|text|我倾向于这种风格：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1294212|++<html>
++++<head>
<%25++++if+(X)
++++++{
%25>++++++<title>Definitely+X</title>
<%25++++}
++++++else
++++++{
%25>++++++<title>Totally+not+X</title>
<%25++++}
%25>++</head>
++</html>|code-block|syntax|javascript|1294213|是的，我确实使用了ASP样式的标签。PHP和HTML的混合在我看来可读性超强。诀窍在于让<%25和%25>标记恰到好处。|offset|length|style|CODE|1294214|entityMap^0|0|0|18|2|1B|2|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]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I am partial to this style:

<pre><code> &lt;html&gt;
 &lt;head&gt;
&lt;% if (X)
 {
%&gt; &lt;title&gt;Definitely X&lt;/title&gt;
&lt;% }
 else
 {
%&gt; &lt;title&gt;Totally not X&lt;/title&gt;
&lt;% }
%&gt; &lt;/head&gt;
 &lt;/html&gt;
</code></pre>

I do use ASP-style tags, yes. The blending of PHP and HTML looks super-readable to my eyes. The trick is in getting the <code>&lt;%</code> and <code>%&gt;</code> markers just right.

blocks|key|1294353|text|另一种方法是将HTML放在一个单独的文件中，并用占位符[内容]标记要更改的区域。(您也可以使用sprintf来代替str_replace。)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1294354|$page+=+'Hello,+World!';
$content+=+file_get_contents('html/welcome.html');
$pagecontent+=+str_replace('[[content]]',+$content,+$page);
echo($pagecontent);|code-block|syntax|javascript|1294355|或者，您可以将所有PHP内容输出到缓冲区中捕获的屏幕，编写HTML，然后将PHP输出放回页面中。|1294356|把PHP写出来，捕获它，然后再写一次，这看起来很奇怪，但这确实意味着你可以做所有类型的格式化工作(heredoc等)，并正确地测试它的输出，而不需要页面模板的麻烦。(+Joomla+CMS是这样做的，顺便说一句。)|offset|length|1294357|即：|1294358|<?php
++++ob_start();
++++echo('Hello,+World!');
++++$php_output+=+ob_get_contents();
++++ob_end_clean();
?>
<h1>My+Template+page+says</h1>
<?php
++++echo($php_output);
?>
<hr>
Template+footer|1294359|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/Here_document#PHP|1|https://en.wikipedia.org/wiki/Joomla|2|https://en.wikipedia.org/wiki/Content_management_system^0|0|0|0|1D|7|0|2C|6|1|2J|3|2|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|15|8|@]|9|@$K|16|L|17|1|18]|$K|19|L|1A|1|1B]|$K|1C|L|1D|1|1E]]|A|$]]|$1|M|3|N|5|6|7|1F|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1G|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]]]

Another approach is put the HTML in a separate file and mark the area to change with a placeholder [[content]] in this case. (You can also use sprintf instead of the str_replace.)
<pre><code>$page = 'Hello, World!';
$content = file_get_contents('html/welcome.html');
$pagecontent = str_replace('[[content]]', $content, $page);
echo($pagecontent);
</code></pre>
Alternatively, you can just output all the PHP stuff to the screen captured in a buffer, write the HTML, and put the PHP output back into the page.
It might seem strange to write the PHP out, catch it, and then write it again, but it does mean that you can do all kinds of formatting stuff (<a href="https://en.wikipedia.org/wiki/Here_document#PHP" rel="nofollow noreferrer">heredoc</a>, etc.), and test it outputs correctly without the hassle of the page template getting in the way. (The <a href="https://en.wikipedia.org/wiki/Joomla" rel="nofollow noreferrer">Joomla</a> <a href="https://en.wikipedia.org/wiki/Content_management_system" rel="nofollow noreferrer">CMS</a> does it this way, BTW.)
I.e.:
<pre><code>&lt;?php
 ob_start();
 echo('Hello, World!');
 $php_output = ob_get_contents();
 ob_end_clean();
?&gt;
&lt;h1&gt;My Template page says&lt;/h1&gt;
&lt;?php
 echo($php_output);
?&gt;
&lt;hr&gt;
Template footer
</code></pre>

blocks|key|1294443|text|$enter_string+=+'<textarea+style="color:#FF0000;"+name="message">EXAMPLE</textarea>';

echo('Echo+as+HTML'+.+htmlspecialchars((string)$enter_string));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1294444|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>$enter_string = '&lt;textarea style=&quot;color:#FF0000;&quot; name=&quot;message&quot;&gt;EXAMPLE&lt;/textarea&gt;';

echo('Echo as HTML' . htmlspecialchars((string)$enter_string));
</code></pre>

blocks|key|1509071|text|除了Chris+B's+answer之外，如果你无论如何都需要使用echo，仍然想保持它的简单和结构化，并且不想用<?php+stuff;+?>的代码垃圾，你可以使用下面的语法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1509072|例如，您想要显示某个图库的图像：|1509073|foreach($images+as+$image)
{
++++echo
++++'<li>',
++++++++'<a+href="',+site_url(),+'images/',+$image['name'],+'">',
++++++++++++'<img+',
++++++++++++++++'class="image"+',
++++++++++++++++'title="',+$image['title'],+'"+',
++++++++++++++++'src="',+site_url(),+'images/thumbs/',+$image['filename'],+'"+',
++++++++++++++++'alt="',+$image['description'],+'"',
++++++++++++'>',
++++++++'</a>',
++++'</li>';
}|code-block|syntax|javascript|1509074|Echo有多个参数，所以有了良好的缩进，它看起来很不错。此外，使用带参数的echo比连接更有效。|1509075|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/1100424/1494454|1|http://php.net/manual/en/function.echo.php^0|X|4|1L|F|2|9|0|0|0|0|11|4|0|4|1|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|17|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|O|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]]]

In addition to <a href="https://stackoverflow.com/a/1100424/1494454">Chris B's</a> answer, if you need to use <code>echo</code> anyway, still want to keep it simple and structured and don't want to spam the code with <code>&lt;?php stuff; ?&gt;</code>'s, you can use the syntax below.

For example you want to display the images of a gallery:

<pre><code>foreach($images as $image)
{
 echo
 '&lt;li&gt;',
 '&lt;a href="', site_url(), 'images/', $image['name'], '"&gt;',
 '&lt;img ',
 'class="image" ',
 'title="', $image['title'], '" ',
 'src="', site_url(), 'images/thumbs/', $image['filename'], '" ',
 'alt="', $image['description'], '"',
 '&gt;',
 '&lt;/a&gt;',
 '&lt;/li&gt;';
}
</code></pre>

<a href="http://php.net/manual/en/function.echo.php" rel="nofollow noreferrer">Echo</a> takes multiple parameters so with good indenting it looks pretty good. Also using <code>echo</code> with parameters is more effective than concatenating.

blocks|key|1509278|text|echo+'
<html>
<body>
</body>
</html>
';|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1509279|或|unstyled|1509280|echo+"<html>\n<body>\n</body>\n</html>\n";|1509281|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

blocks|key|1509108|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1509109|<?php
++++echo+<<<HTML

++++Your+HTML+tags+here

HTML;
?>|code-block|syntax|javascript|1509110|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|$]]

Try this:
<pre class="lang-none prettyprint-override"><code>&lt;?php
 echo &lt;&lt;&lt;HTML

 Your HTML tags here

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

blocks|key|1294656|text|我是这样做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1294657|<?php+if($contition+==+true){+?>
+++++++++<input+type="text"+value="<?php+echo+$value_stored_in_php_variable;+?>"+/>
<?php+}else{+?>
+++++++++No+input+here+
<?php+}+?>|code-block|syntax|javascript|1294658|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|$]]

This is how I do it:
<pre><code>&lt;?php if($contition == true){ ?&gt;
 &lt;input type=&quot;text&quot; value=&quot;&lt;?php echo $value_stored_in_php_variable; ?&gt;&quot; /&gt;
&lt;?php }else{ ?&gt;
 &lt;p&gt;No input here &lt;/p&gt;
&lt;?php } ?&gt;
</code></pre>

blocks|key|1509254|text|不要回显HTML。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1509255|如果您想要使用|1509256|<?php+echo+"<h1>++$title;+</h1>";+?>|code-block|syntax|javascript|1509257|您应该这样做：|1509258|<h1><?=+$title;?></h1>|1509259|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Don't echo out HTML.
If you want to use
<pre><code>&lt;?php echo &quot;&lt;h1&gt; $title; &lt;/h1&gt;&quot;; ?&gt;
</code></pre>
you should be doing this:
<pre><code>&lt;h1&gt;&lt;?= $title;?&gt;&lt;/h1&gt;
</code></pre>

I want to conditionally output HTML to generate a page, so what's the easiest way to echo multiline snippets of HTML in PHP 4+? Would I need to use a template framework like Smarty?

<pre><code>echo '&lt;html&gt;', "\n"; // I'm sure there's a better way!
echo '&lt;head&gt;', "\n";
echo '&lt;/head&gt;', "\n";
echo '&lt;body&gt;', "\n";
echo '&lt;/body&gt;', "\n";
echo '&lt;/html&gt;', "\n";
</code></pre>

How can I echo HTML in PHP?

我想有条件地输出HTML来生成一个页面，那么在PHP的4+中回显多行HTML片段的最简单方法是什么？我需要使用像Smarty这样的模板框架吗？echo '<html>', "\n"; // I'm sure there's a better way!echo '<head>', "\n";echo '</head>', "\n";echo '<body>', "\n";echo '</body>'

问如何在PHP中回显HTML？
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