php php中\n和<br />的区别
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The difference between \n and <br /> in php
提问by Kim
I was studying php with tutorial. I recognized that in php
is sometimes use like this
我正在学习 php 教程。我认识到在 php
中有时是这样使用的
echo $myString."<br />"
Suddenly, there came another in the tutorial "\n" and I got confused. Can I use it just like I use
突然，教程中出现了另一个“\n”，我很困惑。我可以像使用一样使用它吗
<br />
?
?
So like this?
像这样？
echo $mySting."\n"
Is it like a html tag? What's the difference between
它像一个html标签吗？有什么区别
<br /> and \n?
回答by thexacre
<br />is a HTML line-break, whereas \nis a newline character in the source code.
<br />是 HTML\n换行符，而是源代码中的换行符。
In other words, <br />will make a new line when you view the page as rendered HTML, whereas \n will make a new line when you view the source code.
换句话说，<br />当您以呈现的 HTML 形式查看页面时，将换行，而当您查看源代码时，\n 将换行。
Alternatively, if you're outputting to a console rather than somewhere that will be rendered by a web browser then \nwill create a newline in the console output.
或者，如果您要输出到控制台而不是将由 Web 浏览器呈现的某个地方，则将\n在控制台输出中创建一个换行符。
回答by Sam
\nis a new line character(a literal new line as you would type in your code).
\n是一个新行字符（就像您在代码中键入的那样，是一个字面意义上的新行）。
$newline = "
";
var_dump($newline === "\n");
// true
You can also use the PHP constant PHP_EOL(end of line). Note, that '\n'will render \nas a literal string; you must use double quotes to have it rendered as a new line character. Also note, that my above example may actually output false..since sometimes new lines are rendered as \r\n.
您还可以使用PHP 常量PHP_EOL（行尾）。请注意，这'\n'将呈现\n为文字字符串；您必须使用双引号将其呈现为换行符。另请注意，我上面的示例实际上可能会输出 false..因为有时新行被呈现为\r\n.
<br />is an HTML element for a line break. This will show up as a new line when HTML is rendered in a browser.
<br />是一个用于换行的HTML 元素。当 HTML 在浏览器中呈现时，这将显示为一个新行。
The only time that \nwill show up as a rendered line break in HTML, is when it is within a <pre>(pre-formatted text) element. Otherwise it would be the same as just formatting/indenting your HTML code:
\n在 HTML 中显示为渲染换行符的唯一时间是当它位于<pre>(pre-formatted text) element 中时。否则它将与格式化/缩进您的 HTML 代码相同：
<?php
echo "<html>\n\t<body>\n\t\tHello World!\n\t</body>\n</html>";
Outputs:
输出：
<html>
<body>
Hello World!
</body>
</html>
回答by zamnuts
\nis a new line feedwithin the context of plain text, while <br />is line breakwithin the context of HTML.
\n是纯文本上下文中的换行符，而HTML 上下文中<br />是换行符。
HTML can interpret \nwhen using preformatted blocks (e.g. <pre>), but it does not by default, and should not unless there is a specific use case (like when quoting, citing poetry, or showing code).
HTML 可以\n在使用预先格式化的块（例如<pre>）时进行解释，但默认情况下不能解释，除非有特定用例（例如引用、引用诗歌或显示代码时），否则不应解释。
<br />should never be used to separate text that should otherwise be treated as a paragraph, heading or other group of text.
<br />绝不能用于分隔应被视为段落、标题或其他文本组的文本。
