blocks|key|288398|text|只有double+quoted+strings将转义序列\r和\n分别解释为'0x0D‘和'0x0A’，所以您需要：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|288399|"\r\n"|code-block|syntax|javascript|288400|另一方面，Single+quoted+strings只知道转义序列\\和\'。|288401|因此，除非您将单引号字符串与其他地方生成的换行符连接起来(例如，使用双引号字符串"\r\n"或使用chr+function+chr(0x0D).chr(0x0A))，否则在单引号字符串中使用换行符的唯一另一种方法就是使用编辑器直接键入：|288402|$s+=+'some+text+before+the+line+break
some+text+after';|288403|如果需要某些特定的字符序列(例如\r\n)，请确保检查编辑器的换行符设置。|288404|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/language.types.string.php#language.types.string.syntax.double|1|http://php.net/manual/en/language.types.string.php#language.types.string.syntax.single|2|http://php.net/chr^0|S|2|V|2|2|L|0|0|0|X|2|10|2|5|L|1|0|14|6|1D|3|1Q|J|1D|C|2|0|0|G|4|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|F|3|G|5|H|7|1C|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1D|8|@$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|M|3|N|5|6|7|1L|8|@$9|1M|A|1N|B|C]|$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]]|D|@$9|1S|A|1T|1|1U]]|E|$]]|$1|O|3|P|5|H|7|1V|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|V|W|X|E|$Y|11]]|12|$5|V|W|X|E|$Y|13]]]]

Only <a href="http://php.net/manual/en/language.types.string.php#language.types.string.syntax.double" rel="noreferrer">double quoted strings</a> interpret the escape sequences <code>\r</code> and <code>\n</code> as '0x0D' and '0x0A' respectively, so you want:

<pre><code>"\r\n"
</code></pre>

<a href="http://php.net/manual/en/language.types.string.php#language.types.string.syntax.single" rel="noreferrer">Single quoted strings</a>, on the other hand, only know the escape sequences <code>\\</code> and <code>\'</code>.

So unless you concatenate the single quoted string with a line break generated elsewhere (e. g., using double quoted string <code>"\r\n"</code> or using <a href="http://php.net/chr" rel="noreferrer"><code>chr</code> function</a> <code>chr(0x0D).chr(0x0A)</code>), the only other way to have a line break within a single quoted string is to literally type it with your editor:

<pre><code>$s = 'some text before the line break
some text after';
</code></pre>

Make sure to check your editor for its line break settings if you require some specific character sequence (<code>\r\n</code> for example).

blocks|key|3223459|text|使用预定义的PHP_EOL常量：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3223460|echo+$clientid,+'+',+$lastname,+PHP_EOL;|code-block|syntax|javascript|3223461|常量值将根据执行PHP的操作系统的行尾进行设置。在Linux上，它是"\n"；在Windows上，它是"\r\n"。|3223462|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/reserved.constants.php#constant.php-eol^0|6|7|6|7|0|0|0|Y|4|1F|6|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Use the predefined <a href="http://php.net/manual/en/reserved.constants.php#constant.php-eol" rel="noreferrer"><code>PHP_EOL</code></a> constant:

<pre><code>echo $clientid, ' ', $lastname, PHP_EOL;
</code></pre>

The constant value will be set according to the line endings of the operating system where PHP is executing. On Linux, it will be <code>"\n"</code>; on Windows, it will be <code>"\r\n"</code>.

blocks|key|3223732|text|PHP中的"echo“命令将输出作为原始html发送到浏览器，因此即使使用双引号，浏览器也不会将其解析为两行，因为换行符在HTML中没有任何意义。这就是为什么您需要使用以下两种方法之一：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3223733|echo+[output+text]." ";|code-block|syntax|javascript|3223734|当使用"echo“时，或者使用fwrite...|3223735|fwrite([output+text]."\n");|3223736|这将输出HTML换行符，而不是"\n“。|3223737|entityMap^0|0|0|0|0|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

The "echo" command in PHP sends the output to the browser as raw html so even if in double quotes the browser will not parse it into two lines because a newline character in HTML means nothing. That's why you need to either use:

<pre><code>echo [output text]."&lt;br&gt;";
</code></pre>

when using "echo", or instead use fwrite...

<pre><code>fwrite([output text]."\n");
</code></pre>

This will output HTML newline in place of "\n".

blocks|key|3009781|text|无论平台如何，都可以使用常量PHP_EOL来获取正确的字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3009782|http://us3.php.net/manual/en/reserved.constants.php|offset|length|3009783|一个简单的用法示例：|3009784|<?php
$data+=+'First+line'+.+PHP_EOL+.
++++++++'Second+line'+.+PHP_EOL+.
++++++++'Third+line';

file_put_contents("filename.txt",+$data);
?>|code-block|syntax|javascript|3009785|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

Use the constant PHP_EOL to get the right character no matter the platform.

<a href="http://us3.php.net/manual/en/reserved.constants.php" rel="noreferrer">http://us3.php.net/manual/en/reserved.constants.php</a>

A simple usage example:

<pre><code>&lt;?php
$data = 'First line' . PHP_EOL .
 'Second line' . PHP_EOL .
 'Third line';

file_put_contents("filename.txt", $data);
?&gt;
</code></pre>

blocks|key|290364|text|双引号之间的字符串""插值，这意味着它们将转义字符转换为可打印字符。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|290365|单引号''之间的字符串是文字，这意味着它们被完全按照键入的字符进行处理。|290366|您可以在同一行上同时拥有这两个功能：|290367|echo+'$clientid+$lastname+'+.+"\r\n";
echo+"$clientid+$lastname+\r\n";|code-block|syntax|javascript|290368|输出：|290369|$clientid+$lastname
1+John+Doe|290370|entityMap^0|9|2|0|3|2|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|11|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|13|8|@]|D|@]|E|$M|N]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

Strings between double quotes <code>""</code> interpolate, meaning they convert escaped characters to printable characters.

Strings between single quotes <code>''</code> are literal, meaning they are treated exactly as the characters are typed in. 

You can have both on the same line:

<pre><code>echo '$clientid $lastname ' . "\r\n";
echo "$clientid $lastname \r\n";
</code></pre>

outputs:

<pre class="lang-none prettyprint-override"><code>$clientid $lastname
1 John Doe
</code></pre>

blocks|key|3009469|text|您应该使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3009470|"\n"|code-block|syntax|javascript|3009471|你可能还想看看PHP+EOL。|offset|length|3009472|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/128560/when-do-i-use-the-php-constant-php-eol^0|0|0|7|7|0|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]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You should use this:

<pre><code>"\n"
</code></pre>

You also might wanna have a look at <a href="https://stackoverflow.com/questions/128560/when-do-i-use-the-php-constant-php-eol">PHP EOL</a>.

blocks|key|3009554|text|实际上，\r\n用于输出的HTML端。使用这些字符，您只需在html代码中创建一个新行，使其更具可读性：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3009555|echo+"<html>First+line+\r\n+Second+line</html>";|code-block|syntax|javascript|3009556|将输出：|3009557|<html>First+line
Second+line</html>|3009558|查看页面的方式如下：|3009559|First+line+Second+line|3009560|如果你真的想这样做，你只需要用"“引号来修正单引号：|3009561|echo+"\r\n";|3009562|否则，如果您打算拆分文本，在我们的示例“第一行”和“第二行”中，您必须使用html代码：<br+/>|3009563|First+line<br+/>Second+line|3009564|这将输出：|3009565|First+line
Second+line|3009566|此外，如果将整个脚本替换为以下内容，则可读性更好：|3009567|echo+"$clientid+$lastname+\r\n";|3009568|entityMap^0|4|4|0|0|0|0|0|0|0|0|18|6|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1E|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|1F|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1G|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|1H|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|1I|8|@]|D|@]|E|$]]|$1|U|3|V|5|H|7|1J|8|@]|D|@]|E|$I|J]]|$1|W|3|X|5|6|7|1K|8|@$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|H|7|1N|8|@]|D|@]|E|$I|J]]|$1|10|3|11|5|6|7|1O|8|@]|D|@]|E|$]]|$1|12|3|13|5|H|7|1P|8|@]|D|@]|E|$I|J]]|$1|14|3|15|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|16|3|17|5|H|7|1R|8|@]|D|@]|E|$I|J]]|$1|18|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]]|19|$]]

Actually <code>\r\n</code> is for the html side of the output. With those chars you can just create a newline in the html code to make it more readable:

<pre><code>echo "&lt;html&gt;First line \r\n Second line&lt;/html&gt;";
</code></pre>

will output:

<pre><code>&lt;html&gt;First line
Second line&lt;/html&gt;
</code></pre>

that viewing the page will be:

<pre><code>First line Second line
</code></pre>

If you really meant this you have just to fix the single quote with the "" quote:

<pre><code>echo "\r\n";
</code></pre>

Otherwise if you mean to split the text, in our sample 'First line' and 'Second line' you have to use the html code: <code>&lt;br /&gt;</code>:

<pre><code>First line&lt;br /&gt;Second line
</code></pre>

that will output:

<pre><code>First line
Second line
</code></pre>

Also it would be more readable if you replace the entire script with:

<pre><code>echo "$clientid $lastname \r\n";
</code></pre>

blocks|key|288580|text|w3school提供了这样的方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|288581|echo+nl2br("One+line.\n+Another+line.");|code-block|syntax|javascript|288582|通过使用这个函数，你可以做到这一点..我尝试了上面提到的其他方法，但它们对我没有帮助..|288583|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

w3school offered this way: 

<pre><code>echo nl2br("One line.\n Another line.");
</code></pre>

by use of this function you can do it..i tried other ways that said above but they wont help me..

blocks|key|3009694|text|由于某种原因，每一篇询问PHP换行符转义的帖子都没有提到这样一种情况，即只需在单引号字符串中插入换行符就可以实现您所想的效果：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3009695|例如%25+1。|3009696|+echo+'foo\nbar';|code-block|syntax|javascript|3009697|示例1显然没有打印所需的结果，但是，虽然您不能在单引号中转义换行符，但您可以使用单引号：|3009698|前例2。|3009699|+echo+'foo
+bar';|3009700|示例2正好具有所需的行为。不幸的是，插入的换行符依赖于操作系统。这通常不是问题，因为web浏览器/服务器将正确地解释换行符，无论它是\r、\r\n还是\n。|3009701|显然，如果您计划通过其他方式将文件分发到多个操作系统，而不是web浏览器，则此解决方案并不理想。在这种情况下，您应该会看到其他答案之一。|3009702|注意:使用功能丰富的文本编辑器，您应该能够将换行符作为二进制字符插入，该字符表示与编辑文件的操作系统不同的操作系统上的换行符。如果所有其他方法都失败了，只需使用十六进制编辑器插入二进制ascii字符即可。|3009703|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|11|8|@]|9|@]|A|$G|H]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

For some reason, every single post asking about newline escapes in PHP fails to mention the case that simply inserting a newline into single-quoted strings will do exactly what you think:

ex 1.

<pre><code> echo 'foo\nbar';
</code></pre>

Example 1 clearly does not print the desired result, however, while it is true you cannot escape a newline in single-quotes, you can have one:

ex 2.

<pre><code> echo 'foo
 bar';
</code></pre>

Example 2 has exactly the desired behavior. Unfortunately the newline that is inserted is operating system dependent. This usually isn't a problem, as web browsers/servers will correctly interpret the newline whether it is \r, \r\n, or \n.

Obviously this solution is not ideal if you plan to distribute the file through other means then a web browser and to multiple operating systems. In that case you should see one of the other answers.

note: using a feature rich text editor you should be able to insert a newline as a binary character(s) that represents a newline on a different operating system than the one editing the file. If all else fails, simply using a hex editor to insert the binary ascii character would do.

blocks|key|3009846|text|对我来说什么都不起作用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3009847|PHP_EOL|CODE|3009848|.+"\r\n";|3009849|$NEWLINE_RE+=+'/(\r\n)%7C\r%7C\n/';+//+take+care+of+all+possible+newline-encodings+in+input+file
$var+=+preg_replace($NEWLINE_RE,'',+$var);|code-block|syntax|javascript|3009850|：适用于我|3009851|$admin_email_Body+=+$admin_mail_body+.' '+."\r\n";
$admin_email_Body+.=+'This+is+line+2+ '+."\r\n";
$admin_email_Body+.=+'This+is+line+3+ '+."\r\n";|3009852|entityMap^0|0|C|0|0|7|0|0|9|0|0|1|4|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@$9|Z|A|10|B|H]]|D|@]|E|$]]|$1|I|3|J|5|6|7|11|8|@$9|12|A|13|B|H]]|D|@]|E|$]]|$1|K|3|L|5|M|7|14|8|@]|D|@]|E|$N|O]]|$1|P|3|Q|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|R|3|S|5|M|7|18|8|@]|D|@]|E|$N|O]]|$1|T|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|U|$]]

Nothing was working for me.

<code>PHP_EOL</code> 

<code>. "\r\n";</code> 

<pre><code>$NEWLINE_RE = '/(\r\n)|\r|\n/'; // take care of all possible newline-encodings in input file
$var = preg_replace($NEWLINE_RE,'', $var);
</code></pre>

Works for me: 

<pre><code>$admin_email_Body = $admin_mail_body .'&lt;br&gt;' ."\r\n";
$admin_email_Body .= 'This is line 2 &lt;br&gt;' ."\r\n";
$admin_email_Body .= 'This is line 3 &lt;br&gt;' ."\r\n";
</code></pre>

blocks|key|293544|text|使用PHP+nl2br获取文本字符串中的换行符..|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|293545|293546|+$text+=+"Manu是个好孩子。(进入)他可以很好地编写代码。|blockquote|293547|293548|echo+nl2br($text)；|293549|结果。|293550|Manu是个好孩子。|293551|他的代码写得很好。|293552|entityMap^0|0|P|0|0|0|0|0|0|3|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|Y|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|14|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

Use the PHP nl2br to get the newlines in a text string..
<blockquote>
$text = &quot;Manu is a good boy.(Enter)He can code well.
echo nl2br($text);
Result.
Manu is a good boy.
He can code well.
</blockquote>

blocks|key|293499|text|我也尝试过在单引号和双引号中使用这种组合。但都没有奏效。最好使用双引号中的 ，而不是使用\n。像这样..。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|293500|$variable+=+"and";
echo+"part+1+$variable+part+2 ";
echo+"part+1+".$variable."+part+2";|code-block|syntax|javascript|293501|entityMap^0|11|5|1C|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

I have also tried this combination within both the single quotes and double quotes. But none has worked. Instead of using <code>\n</code> better use <code>&lt;br/&gt;</code> in the double quotes. Like this..

<pre><code>$variable = "and";
echo "part 1 $variable part 2&lt;br/&gt;";
echo "part 1 ".$variable." part 2";
</code></pre>

blocks|key|291253|text|使用chr+(13)表示回车符，使用chr+(10)表示新行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|291254|echo+$clientid;
echo+'+';
echo+$lastname;
echo+'+';
echo+chr+(13).+chr+(10);|code-block|syntax|javascript|291255|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|$]]

Use chr (13) for carriage return and chr (10) for new line

<pre><code>echo $clientid;
echo ' ';
echo $lastname;
echo ' ';
echo chr (13). chr (10);
</code></pre>

blocks|key|3223771|text|对于任何echo语句，我总是在双引号中使用 。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3223772|entityMap^0|L|4|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

For any echo statements, I always use <code>&lt;br&gt;</code> inside double quotes.

blocks|key|3009838|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3009839|You+Can+Try+This.
<?php
+++$content+=+str_replace(PHP_EOL,+" ",+$your_content);
+?>
+
<?php+echo($content);+?>|code-block|syntax|javascript|3009840|3009841|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|K|8|@]|9|@]|A|$E|F]]|$1|G|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|M|8|@]|9|@]|A|$]]]|I|$]]

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-html lang-html prettyprint-override"><code>You Can Try This.
&lt;?php
 $content = str_replace(PHP_EOL, "&lt;br&gt;", $your_content);
 ?&gt;
 
&lt;p&gt;&lt;?php echo($content); ?&gt;&lt;/p&gt;</code></pre>
</div>
</div>

In PHP I am trying to create a newline character:

<pre><code>echo $clientid;
echo ' ';
echo $lastname;
echo ' ';
echo '\r\n';
</code></pre>

Afterwards I open the created file in Notepad and it writes the newline literally:

<blockquote>
 1 John Doe\r\n 1 John Doe\r\n 1 John Doe\r\n
</blockquote>

I have tried many variations of the <code>\r\n</code>, but none work. Why isn't the newline turning into a newline?

PHP - how to create a newline character?

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在PHP中，我尝试创建一个换行符：echo $clientid;echo ' ';echo $lastname;echo ' ';echo '\r\n';然后，我在记事本中打开创建的文件，它会按字面意思写下换行符： 1无名氏\r\n 1无名氏\r\n 1无名氏\r\n我已经尝试了\r\n的许多变体，但都不起作用。为什么换行符不会变成换行符？

问PHP -如何创建换行符？
EN

回答 15

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问PHP -如何创建换行符？EN

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